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  • Latest Event ●●●●●● All Events
  • AIS Name 818
  • IMO 9798258
  • MMSI 319176700
  • Callsign ZGKH4
  • Year Built 2019
  • Length 77 m
  • Draught 3.3 m / 1.9 m / 6.7 m Avg/Min/Max
  • Speed 12.3 kn / 18.8 kn Avg/Max
  • Deadweight ●●●●●●
  • Gross Tonnage ●●●●●●
  • AIS Class —

Current Voyage & ETA Changes

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Last Update: 28 Jan 2021, 10:44:36 UTC The following users contributed to this datasheet: U-kasz , HannesvanRijn ,

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yacht pi ais





yacht pi ais

818 Yacht, IMO 9798258

Where is the current position of 818 presently vessel 818 is a yacht ship sailing under the flag of cayman islands . her imo number is 9798258 and mmsi number is 319176700. main ship particulars are length of 77 m and beam of 11 m. maps show the following voyage data - present location, next port, estimated (eta) and predicted time of arrival (pta), speed, course, draught, photos, videos, local time, utc time..

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yacht pi ais

818 current position is received by AIS. Ship info reports, fleet analysis, company analyses, address analyses, technical specifications, tonnages, management details, addresses, classification society data and all other relevant statistics are derived from Marine Vessel Traffic database. The data is for informational purposes only and Marine Vessel Traffic is not responsible for the accuracy, completeness and reliability of data reported above herein.

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PI is a 77.25 m Motor Yacht, built in Netherlands by Feadship and delivered in 2019.

Her top speed is 18.4 kn and her power comes from two MTU diesel engines. She can accommodate up to 12 guests in 6 staterooms, with 18 crew members. She has a gross tonnage of 1592.0 GT and a 11.0 m beam.

She was designed by Jarkko Jämsen .

The naval architecture was developed by Feadship De Voogt Naval Architects , who has architected 103 other superyachts in the BOAT Pro database, and the interior of the yacht was designed by Sinot Yacht Architecture & Design , who has 32 other superyacht interiors designed in the BOAT Pro database - she is built with a Teak deck, a Steel hull, and Aluminium superstructure.

PI is in the top 5% by LOA in the world. She is one of 118 motor yachts in the 70-80m size range, and, compared to similarly sized motor yachts, her top speed is 0.61 kn above the average.

PI is currently sailing under the Cayman Islands flag, the 2nd most popular flag state for superyachts with a total of 1406 yachts registered. She is currently located at the superyacht marina Porto Montenegro, in Montenegro, where she has been located for 1 week. For more information regarding PI's movements, find out more about BOAT Pro AIS .


  • Previous Names: SYZYGY 818
  • Yacht Type: Motor Yacht
  • Yacht Subtype: Displacement
  • Builder: Feadship
  • Naval Architect: Feadship De Voogt Naval Architects
  • Exterior Designer: Jarkko Jämsen
  • Interior Designer: Sinot Yacht Architecture & Design
  • Refits: 2019,2021,2021,2022,2022,2022,2023,2023,2023,2023

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Gary c. kessler.

The Raspberry Pi is a family of low-cost, single-board computers developed by the Raspberry Pi Foundation in the U.K. Since its introduction in 2012, it has emerged as a widely-used platform for embedded system research and project hobbyists. Most users use some form of the Linux operating system on the Raspberry Pi; equipped with several USB ports, quad-core processor, an IEEE 802.3/Ethernet port, IEEE 802.11 WiFi and Bluetooth capability, HDMI connector, audio output, and a general-purpose input/output (GPIO) bus, it is a very powerful tool for research, exploration, teaching, and learning. There are many documents on the Internet that describe various aspects of using a Raspberry Pi to create a marine Automatic Identification System (AIS) display. While I don't want to repeat all of those sites — and, hopefully, I won't — I wanted to put everything into one place, particularly for other AIS researchers who are looking for a push up the learning curve. I hope that this page accomplishes that goal. For purposes of this paper, I am assuming that readers understand the fundamentals of AIS. To get a lot more information, check out the USCG Navigation Center's Automatic Identification System Overview , IALA's An Overview of AIS (Edition 2) , or the automatic identification system (AIS) article at Wikipedia. For your viewing pleasure, see my Build A Raspberry AIS talk from Hack The Sea 2.0 at DEF CON 28 (2020). Also, check out the following blog postings by my friend and colleague, Rae Baker: Creating an AIS Pi for Maritime Research and How to Install OpenCPN on Your AIS Raspberry Pi for Maritime Research .

Table of Contents

Unless specifically noted otherwise, no endorsement of hardware, software, or other items is intended in the discussion below.

Raspberry Pi: Essential hardware, obviously, since this is the title of the paper! There are many sources and I leave that to the reader. Be sure to get the latest version of the hardware. (The information on this page has been tested, and is running, on a Raspberry Pi 3 Model B+. Everything should still work on the current version of the hardware, the Raspberry Pi 4.)

yacht pi ais

  • NOTE: If you use an antenna for your dAISy Hat, note the terminating connector. If it comes with a male BNC plug, it should attach directly to the dAISy Hat's female BNC jack. If it comes with a coaxial cable, it most likely terminates with a male PL-259/SO-239 plug, thus, you will need an adapter. I would recommend getting the SO-239 pigtail or BNC-to-SO-239 adapter when you buy the dAISy Hat.
  • A note on antenna connector nomenclature: According to most sources that I can find, references to SO-239 and PL-259 are mated connector pairs for coaxial cable terminations. In general, the SO-239 (aka UHF Female or UHF Jack) is the connector on a radio or chassis and the PL-259 (aka UHF Male or UHF Plug) is the connector on a cable. You may also find a "male SO-239" or a "female PL-259" product listings. Be sure to look at the pictures!

µSD card: The operating system, all files, and on-board storage for the Raspberry Pi reside on a single microSD card. Ideally, get a card with a capacity of 32 GB or 64 GB. Most microSD cards come with an adapter so that they can fit into a computer's SD card slot. If you don't have such a card slot, you might also need to obtain a µSD/SD-to-USB reader.

Case (optional): Although it is not absolutely necessary to have a case, I would recommend getting the case that comes with the dAISy Hat in order to protect all of the components when everything is in use.

Other hardware (optional): In order to initially configure the Raspberry Pi, you might also want to have on hand an HDMI-capable monitor, an HDMI cable, and a wireless/USB keyboard and mouse. You should also have an Ethernet cable and router for a network connection or an open WiFi network.

Antenna (optional): You will need an antenna if you wish to pick up AIS signals from the outside. AIS uses two VHF maritime frequencies, 161.975 MHz and 162.025 MHz. Any antenna that can work in these frequencies — or is labelled "VHF marine antenna" — ought to work fine for AIS projects. As noted above, be sure to check out the antenna cable connector.

Installing Raspberry Pi OS

Before going any further, I would like you to be aware of an entirely different direction you can take. AISHub offers rPiAIS , an implementation of AIS Dispatcher for the Raspberry Pi. Depending upon what you're trying to do, rPiAIS might be worth looking into.

There are several lightweight Linux (and other) operating systems that can run on the Raspberry Pi. The native OS is Raspberry Pi OS (nee Raspian), a variant of Debian. The best source for all of these is the Raspberry Pi Foundation's Software page, and follow the instructions.

  • Download and install the Raspberry Pi Imager.
  • (Optional) Watch the 45-second installation video .
  • Attach a microSD card to your computer.

yacht pi ais

  • Execute the Raspberry Pi Imager application:
  • (Optional but highly recommended) Press CTRL+SHIFT+X to preconfigure the OS. At this point, set the hostname, enable SSH (not required, but recommended), set the username and password, enable WiFi (be sure to properly set the country), and set locale information.
  • Click the WRITE button to write and verify the image on the microSD card.

yacht pi ais

  • The OS is installed when you see the message above. Click CONTINUE .
  • Exit the Raspberry Pi Imager application.

Configuring the Raspberry Pi

You're now ready to get the Raspberry Pi running! For additional information on this phase, see the Getting started with Raspberry Pi page.

  • Insert the microSD card into the Raspberry Pi's SD card slot, attach your I/O devices (i.e., keyboard/mouse/monitor), and power it up.
  • You should see a red LED light up on the Raspberry Pi; this indicates that it is booting. It might take a few minutes, but you will soon see what appears to be a Linux-like desktop!

yacht pi ais

  • If you entered configuration information above during the microSD card imaging process, your Raspberry Pi is already mostly configured (except missing a couple of essential elements, discussed below). You should step through the configuration tabs to ensure that what you want is there. This is also the place to enter any missing information or change information later.
  • The System tab shows the system's Hostname . This is also where you can Change Password , direct the boot process to the desktop or command line interface (CLI), set the automatic login option, and more.

yacht pi ais

  • You will need to make some changes on the Interfaces tab:
  • If you enabled SSH in the imaging process, confirm that the SSH slider is set. You should probably also enable VNC to allow remote login to the desktop. [ NOTE: You might need to engage port forwarding and/or make other changes to your firewall to allow SSH/VNC traffic into your network. SSH uses TCP port 22 and VNC uses TCP port 5900.]

yacht pi ais

  • Information on the Localisation tab should be mostly set if you entered information during the imaging process:
  • Set your language and country by clicking the Set Locale... button. This information was not provided during the imaging process so enter it here.
  • Set your time zone area and location by clicking the Set Timezone... button.
  • Set the keyboard model and layout by clicking the Set Keyboard... button.
  • If you intend to use WiFi, click the Set WiFi Country... button to select a country.

yacht pi ais

  • When the configuration looks ok, click OK . You'll be asked if you want to reboot; click the "Yes" button.

You can perform the same functions from the command line by opening a terminal window and entering:

Additional information on using the command line configuration utility can be found at the Raspberry Pi Foundation's raspi-config page.

Once you've set a WiFi country, the Raspberry Pi should automatically find any available WiFi network that is broadcasting its SSID if a network cable is not physically attached. If you want to connect to any WiFi network that doesn't broadcast an SSID, you will need to edit the /etc/wpa_supplicant/wpa_supplicant.conf file in order to add the hidden network information. Note that WiFi information is already configured if you entered a network name during the microSD card imaging process, above. The paragraphs below provide information that you might need in order to change WiFi network settings or better understand the contents of the wpa_supplicant.conf file.

What follows is an example of how you might configure the wpa_supplicant.conf file if you have two WiFi networks, namely, a non-broadcast SSID "Guest" network that requires no password and a non-broadcast SSID "Owner" network with the password "Secret" (using WPA). Open the file by entering the following on the command line (you need to use sudo here because this is a system file):

Now, add the following lines to the config file:

After adding the lines, press control-O (^O) to write the file and ^X to exit. The Raspi will now see the hidden networks as well as any openly advertised networks.

NOTE: Raspberry Pi OS comes with several easy-to-use text editors. nano , referenced above, is a nice command line editor. A GUI text editor can be found by clicking the Raspberry icon, Accessories, and Text Editor.

Finally, a note about screen resolution. If you access the Raspberry Pi strictly via SSH or VNC, it is referred to as a headless connection. Regardless of whether you access remotely or output to an HDMI monitor, if you don't like the screen resolution, you can always change it via the Display tab in the Raspberry Pi Configuration menu. Alternatively, open the /boot/config.txt file with your favorite text editor (be sure to use sudo ). Scroll down to find these lines:

Uncomment the two framebuffer commands by removing the leading hash ( # ). Save the file, reboot, and your screen resolution will be different! You might need to experiment around a bit to find the right size for your monitor.

FINAL NOTE: If you enter configuration information during the microSD card imaging phase, the Raspberry Pi will startup in headless mode. In that case, you might not need an external keyboard, mouse, and monitor to get started. Boot the Raspberry Pi, connect via SSH, run raspi-config from the command line, enable VNC, and reboot. After that, you can connect to the Raspberry Pi's desktop with VNC.

Installing dAISy Hat

Installing the dAISy Hat hardware is very straight-forward. You'll probably want to download the dAISy HAT AIS Receiver Manual for additional reference.

If you have played with computer hardware before, then installing the dAISy Hat daughterboard to the Raspberry Pi's GPIO pins won't be a problem. If you haven't done this before, all I can say is to work slowly, align the socket on the board onto the Raspberry Pi's pins carefully, and press the cards together slowly and evenly.

yacht pi ais

The remainder of this section describes some command-line tools that allow you to determine the status of the GPIO pins on the Raspberry Pi. This step is optional; it provides useful information if you would like to know more about the hardware, but is not essential to the operation of the dAISy Hat, the Raspberry Pi, or OpenCPN .

Raspberry Pi OS comes with the raspi-gpio command, which lists the state of the GPIO pins, one pin per line:

To learn more, use the help argument to see all of the options.

If you want a somewhat easier-to-read representation of the GPIO status, download gpioread from Ian Binnie's (Milliways2) GitHub page. ( gpioread replaces the deprecated gpio readall utility that came with Raspian.) Start by opening up a terminal window on the Raspberry Pi and then execute the following commands:

yacht pi ais

For additional information, go to the Milliways2 GitHub page or this relevant StackExchange discussion.

Installing screen

screen is a terminal emulator with which you can communicate directly with the serial port, providing a mechanism with which to control and manage the dAISy Hat hardware. This step is optional; screen provides useful information but is not essential to the operation of the dAISy Hat or OpenCPN .

Install screen by issuing the following command from a terminal window:

The dAISy Hat should be attached to Serial 0 port; under Raspberry Pi OS, note that /dev/serial0 is an alias for /dev/ttyS0 . To connect to the hardware, type:

Press <ESC> and you should see a display such as the following:

yacht pi ais

Note that if you press T , you will enter a mode where you can send AIS test messages (as National Marine Electronics Association [NMEA] 0183 / International Telecommunication Union [ITU] Recommendation M.1371-5 sentences):

yacht pi ais

If you press <ENTER>, the software will transmit the AIS Type 4 message (Base Station Report) shown here every five seconds. Pressing <ESC> stops the transmission of test messages; pressing <ESC> again returns the device to receive mode. (If you are curious what the message says, use one of the AIS parsing Web sites or my AIS parser software described in the Interpreting the Data section below.)

You can exit screen by entering command mode (^A), then pressing K (kill process), followed by Y (yes). To obtain a complete list of screen commands and options, type:

OpenCPN is free, open source chartplotter and maritime GPS navigation software that can run on Android, Debian, Fedora, Flatpak, Linux, MacOS, Raspberry Pi, Ubuntu, and Windows systems — it seems about every platform except iPadOS and iOS. While designed to be used while underway or for planning purposes, it also provides a useful tool for AIS projects.

yacht pi ais

For my research purposes, I use OpenCPN to track both live and spoofed traffic. I do not actually transmit AIS messages over the air, but examine the effects using OpenCPN on the same system that generates the bogus AIS traffic and is receiving real AIS traffic. There is a very cool GitHub site that describes MAIANA™: The Open Source AIS Transponder if you are looking for an alternative to using a software-defined radio (SDR) approach.

To learn more about OpenCPN, visit , the source of all things OpenCPN! In particular, there are a wide variety of manuals to be found at that site, including:

  • OpenCPN Manuals
  • OpenCPN User Manual
  • OpenCPN Installation
  • OpenCPN Installation on Raspberry Pi 2/3/4

The steps outlined below should work on Raspberry Pi OS version 11 (aka bullseye ). If you are not sure what version of Raspian or other Linux distro you are using, use the following command:

Prepare for the OpenCPN installation by creating an opencpn directory under your home directory:

PGP Key Management

The first step in order to download and install OpenCPN is to manually create a Pretty Good Privacy (PGP) keyfile. This process will ensure that you have the latest, most current key.

  • In the Search String field, enter the key 0xC865EB40 .
  • All options should be OFF except "Get verbose index of matching keys."
  • Click the Search Key button.

yacht pi ais

  • A new Web page, similar to the one below, will open. Click on the rsa1024/ link provided in the pub section.

yacht pi ais

This should take you to page similar to the one below that contains the key.

yacht pi ais

Use nano or another text editor to open/create a text file called opencpn_key.txt (or, use another name if you want) in the opencpn directory. Copy the Web page text starting from "-----BEGIN PGP PUBLIC KEY BLOCK-----" to the end of the page, and paste it into the opencpn_key.txt file. Use ^O to write the file and ^X to exit the editor. Use the cat opencpn_key.txt command to verify the file.

Download and Install OpenCPN

Start the OpenCPN installation by typing:

The nano text editor will open. Move the cursor to the end of the file and add this line (assuming that you are using Raspberry Pi OS "bullseye"):

In the command above, you are obtaining an Ubuntu Personal Package Archive (PPA) that is compatible with your version of Raspberry Pi OS. The keyword bullseye refers to the version of Ubuntu compatible with Raspberry Pi OS version 11. If using Raspian Stretch, the compatible Ubuntu release is xenial ; for Raspian Buster, it is bionic .

Save the updates and close the file.

Now, install the PGP key, get updated software sources, and install OpenCPN:

There may be some error messages; read them and document any additional commands that you need to execute.

Run and Configure OpenCPN

Run OpenCPN by typing opencpn from the command line or by clicking the Application (Raspberry) icon, Education, OpenCPN from the GUI.

The first thing to do, in almost all cases, will be to load some charts; this is possibly the most painful part of OpenCPN:

  • Click on Options (the crescent wrench or gear icon)

yacht pi ais

  • Click on Charts

yacht pi ais

  • Here is where things can get a bit complicated. The easiest way to download charts is to select the Chart Downloader tab.

yacht pi ais

  • Click the Add Catalog button to see the Chart Catalog. From here, you can scroll down to see a variety of chart catalogs. In this case, I select the "USA - NOAA & Inland charts" catalog of Electronic Navigation Charts (ENC). [[ Where possible, use ENC charts... ]]

yacht pi ais

  • The ENC NOAA charts can be viewed by state, USCG District, and other options. In this case, I select "by States" and scroll down to select "Florida" by clicking OK .

yacht pi ais

  • Download the desired catalogs into the directory by clicking the OK button.
  • Select a catalog by clicking on it. Next, click on the Download Charts... tab. You should see a list of chart names. Scroll through the box to select the charts that you want. In order to make this selection, you need to know the name of the chart(s) you want; knowing the chart number is useful, but only as a way to learn the name because the catalog in OpenCPN only lists names. Click the "Download selected charts" button to download the charts to your system. When that is complete, click OK .

yacht pi ais

  • The configuration shown below displays the selected charts from Florida. Scroll in closer to get the detail!

yacht pi ais

Next, configure your data source:

  • As above, click on Options (the crescent wrench or gear icon)
  • Click on Connections

yacht pi ais

  • Scroll down and click the Add Connection button
  • Under Properties:
  • If you are using the dAISy Hat (or other data source on the serial I/O bus):
  • Click the Serial radio button
  • Select (or enter) '/dev/ttyS0/ or '/dev/serial0' in the DataPort field
  • Select a Baudrate of 38400

yacht pi ais

  • If you are using an external device and getting a network-based data feed:
  • Click the Network radio button
  • Select the protocol (most likely to be TCP but will depend upon your setup)
  • Enter the IP address of the device
  • Enter the port number used by the protocol

yacht pi ais

Under Connections , you can check the Show NMEA Debug Window box to see the actual NMEA/ITU sentences (screen shots below for the serial and network connections, respectively):

yacht pi ais

Note that when using OpenCPN with a network data source, the raw data feed can be captured directly using the netcat (nc) or telnet command, in the form:

yacht pi ais

OpenCPN can also be used as a data server and create a data stream from its input. This is particularly useful if you are reading from a serial interface; OpenCPN can read from serial0, for example, and produce a TCP data stream. Setting this up is very straight-forward:

  • Add a new connection, as above.
  • Select the TCP protocol
  • Use the IP address since you are using yourself as the source
  • Enter the port number you'd like to use (it is best to use a value in the range 1024-65535)
  • Uncheck the Receive input on this Port box
  • Check the Output on this port box

yacht pi ais

At this point, you have two open connections, and OpenCPN is accepting input from whatever source you had been using and sending output on your desired TCP port.

yacht pi ais

Read your raw data stream, as above, from a terminal or any other application using netcat or telnet .

yacht pi ais

Finally... one of the problems that is immediately apparent from the raw output stream is that AIS lacks timestamp information. While OpenCPN displays a timestamp in the Debug Window, that is not part of the AIS message and, therefore, not a part of the raw data stream that can be captured. To remedy this, I wrote a small Perl program called timestamp_data that can connect to a TCP or UDP socket on a local or remote host, and read a data stream for a specified amount of time. Output is directed to a file complete with a human-readable and Unix epoch-formatted timestamp of when the data was received; fields in the file are delimited with a "pipe" (|) character. Users can, optionally, also see the data in real-time. The program can be found on my software page .

yacht pi ais

SIDENOTE: Sending data to OpenCPN If you have a file filled with AIS messages, it is also possible to send that data to OpenCPN for display. First, you need to set up OpenCPN to listen on a TCP port rather than send. Just create a new OpenCPN connection on the port of your choice to address, as shown above, but check the box to "Receive input on this port." There are a variety of methods with which to send the data to OpenCPN at this point. You could just transmit the entire file via netcat : cat FILENAME | nc localhost PORT Using the method above will work but all it does is dump the entire AIS message stream to OpenCPN at one time so you just see the last sentence transmitted by each vessel. If you want to slow things down a little, add a delay between the display of each line in the data file using some shell scripting: cat FILENAME | { while read line; do sleep 2; echo "$line" | nc localhost PORT ; done; } cat FILENAME | { while read line; do sleep 1; echo "$line" > /dev/tcp/localhost/PORT ; done; } Again, the method above works but it puts in a fixed delay. If you used a tool that attaches a timestamp to your data or you otherwise have a data file with a timestamp on each message (e.g., you got the data using the timestamp_data tool above), you can replay the data in OpenCPN in relative real-time using another one of my tools, play_ais . This program only needs a character-delimited file where each record has a timestamp (in seconds) and valid AIS sentence; a short video about using this approach can be found on my Web page (NOTE: The program was called replay at the time that I made the video). Another tool that is quite useful for AIS research is panaaj's NMEASimulator , an easy-to-use NMEA sentence generator for messages related to position, speed, and heading, among other items. The program, which replaces the Chrome-only plug-in, runs on Linux, MacOS, Raspberry Pi OS (armv7l), and Windows. To send information to OpenCPN, you need the IP address and listening port. Enter this information into NMEASimulator by clicking on Options, Settings and selecting the Server tab. Be sure to click the Save button. Start up OpenCPN and then click Start in NMEASimulator; simulated AIS data should now be displayed on OpenCPN.

Interpreting the Data

There are a variety of sources that will help you interpret the raw NMEA/ITU sentences that are transmitted over the air. The "AIVDM" sentences that AIS devices typically see are the NMEA 0183 AIS incoming transmissions (as opposed to AIVDO outgoing transmissions). Possibly the best online, open-source reference as to the details of the NMEA/ITU sentence content is Eric Raymond's AIVDM/AIVDO protocol decoding page.

There are also a number of AIS parsers online, where you can submit an NMEA sentence for interpretation, as shown below (from the Maritec Solutions online parser):

yacht pi ais

There are other AIS online parsers with a variety of capabilities, including:

  • AIS online decoder (AGG Software)
  • Online AIS Message Decoder (Thomas Borg Salling)
  • AIS VDM/VDO Decoder (Maritec Solutions)
  • AIVDM & AIVDO NMEA sentence decoder (RL.SE)
  • AisDecoder (Neal Arundale)
A SMALL SIDENOTE: GCK's AIS Tools As mentioned earlier, my set of AIS tools (written in Perl) are available on my software page . These tools provide the ability to create AIS messages, and parse messages (as shown below), as well as capture AIS traffic in real time and replay AIS messages (as mentioned above). To download my tools (or any other files) to the Raspberry Pi, go to my software page with the browser and download the desired ZIP file. To unzip the file, open a Terminal windows, navigate to the directory where the ZIP file was saved, and then use the unzip command to expand the file archive. A Perl interpreter is included in Raspberry Pi OS. Alternatively, you can use the wget command to download files. Here is an example. Suppose you want to download the file from my Web site and put it into a directory that you will create named AIS on the Raspberry Pi. You can do this with following commands: mkdir AIS cd AIS wget unzip

If you are looking for real AIS data for research, testing, or curiosity, check out:

  • AISHub , an AIS data sharing and vessel tracking site
  • AIS data from the area of Daytona Beach/Ponce de Leon Inlet, Florida can be found at ; for a live data feed, telnet or netcat to port 4000 at
  • The Norwegian Coastal Administration offers real-time AIS data at IP address, port 5631 or
  • Spire Global also has some historical AIS data that can be made available upon request.

And, finally... if you are working with NMEA 2000 binary data, take a look at the CANboat project. Also, provides a websocket API for real-time AIS data acquisition.

COPYRIGHT NOTICE All information on this page © 2019- document.write(new Date().getFullYear()) , Gary C. Kessler. Permission to use the material here is extended to any of this page's visitors, as long as appropriate attribution is provided and the information is not altered in any way without express written permission of the author.

PI (IMO 9798258 ) - Yacht

What are pi ship details.

PI (IMO: 9798258) is a Yacht registered and sailing under the flag of Cayman Islands . Her gross tonnage is 1592 and deadweight is 0 . PI was built in 2019 . PI length overall (LOA) is 77.25 m, beam is 11.2 m. Her container capacity is 0 TEU. The ship is operated by KK SUPERYACHTS .

Where is PI current position?

PI current position is received by AIS and displayed on next chart by using of VesselFinder services.

Vessel details for PI

Ship Particulars Value
IMO 9798258
Callsign ZGKH4
Flag (Registration) Cayman Islands
Gross Tonnage 1592
Deadweight (t) 0
Length (m) 77.25
Beam (m) 11.2
Built (year) 2019
Name Flag Year
SYZYGY 818 United Kingdom 2019
PI 2019

All details and current position are for informational purposes and VesselTracking is not responsible for the accuracy and reliability of PI data values.

AIS data sharing and vessel tracking by AISHub

Realtime status.

Vessels (last 24 hours)

AIS vessel tracking

Why AISHub ?

AISHub logo

How to share AIS data ?


  • You fill the JOIN US form
  • We send you our host/IP address and a UDP port where you can send your AIS data
  • You enter our IP and UDP port in the output settings of your AIS receiver or software

How will I receive aggregated AIS data feed from AISHub ?

  • TCP connection in raw NMEA format
  • API in JSON, XML or CSV format
  • Yachting Monthly
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Rebuilding a yacht’s navigation system using Raspberry Pi

  • February 15, 2023

When David Bishop bought a 30-year-old boat, the batteries were dying and the wiring was a mess. He decided to rebuild the nav system using several Raspberry Pis

yacht pi ais

Back in May 2021, my wife Lydia and I purchased our first boat, a 1994 Dehler 34 called Troppo Bella , and spent the summer exploring the beautiful waters around Conwy. Planning to venture further afield the following year, I decided it was time to rebuild the somewhat vintage navigation station.

With much of the wiring 30 years old and a scant complement of switches, the navigation station hadn’t kept pace with the numerous navigational devices, lights and living comforts that had been added over the years. Unfortunately, half of these additions had since been decommissioned due to faults, including the Navtex receiver, SSB weather fax receiver and autopilot. Sat at anchor using camping lights in the saloon to preserve our fading batteries, it was also clear we had to be able to control power consumption if we wanted to spend more than a night away.

We set a couple of aims for the revamp. Firstly, we wanted to make full use of the existing equipment that was still functional. This included the Furuno GP32 Navigator GPS at the navigation station and the Raymarine C80 multi-function display that was mounted on the binnacle. These devices are robust, waterproof and adventure-ready. Budget was also limited so upcycling what we had, rather than installing the latest navigational tech, was essential.

Secondly, we wanted to use the navigation station to plan and plot a route on screen, push it to the GPS, chartplotter and Navionics on our tablet, and be able to view our progress while sailing. While a laptop could do this job, space at the chart table was tight, plus recharging a laptop would be a hefty draw on house batteries during extended trips. We’d need something small and low power for the job.

yacht pi ais

Lydia at the old and very cluttered nav station.

But before any of this could be achieved I had to take out the moulded switch panel and instrument board and remove all of the old switch wiring. I was then left with a simple set of power and data wires coming in from instruments around the boat, which I carefully labelled. Realising I had now effectively made the boat unusable, the project suddenly felt epic: there would be no sailing until this project was complete!

The original layout had 10 switches and I calculated that I would ideally like around 30 to give complete control of our power usage. There was no room for ready-made switch panels, so I opted for a collection of individual Blue Sea Systems Contura switches that I could group and mount easily as space allowed.

Having decided we wanted an integrated computer for route plotting, the next step was to decide which one to use, how to fit it into the small space available and where to mount the display.

yacht pi ais

Two of the Raspberry Pis hidden in the old Navtex box

Raspberry ripple

My daughters and I had already been tinkering with Raspberry Pis, a cheap computer no bigger than a pack of cards, designed to encourage children to learn about technology. These computers are easy to set up and well documented with many free books available from the Raspberry Pi Foundation .

Since their invention, Raspberry Pis have been used by sailors in boat computers for a range of purposes including navigation and autopilot systems, to monitor engines, bilges and tank levels, as well as manage solar power generation. This miniature computer was ideally suited to power our new navigation solution.

To plot a course, display our position on a digital chart and see AIS Targets, I wanted to use OpenCPN chartplotting software with licensed charts from and was delighted to discover OpenPlotter to get me started. This software bundle provided everything I needed, including the Raspberry Pi operating system, OpenCPN and Signal K. This last bit of software can be used to connect up the boat’s instruments (wind, speed, depth, GPS, routing, AIS) and make the data available over WiFi and so was going to be vital in pushing information to our Raspberry Pi-powered chartplotter and Navionics.

I realised that the decommissioned Navtex box would make the perfect, protected place to hide two little Raspberry Pis; I would use one of the mini computers for getting the instruments to talk to each other via Signal K and another to power my OpenCPN chartplotter.

yacht pi ais

David at work at the new nav station using the inbuilt computers and touch-screen display

Like a couple of hermit crabs they were soon installed in their new home. Moving things around on the instrument board I was also able to find a space for a 7-inch LCD touchscreen which could be used for our route plotting as well as reviewing weather information or as an instrument panel.

I hadn’t fully realised how much extra wiring three times the number of switches would create but, armed with many cable ties, I managed to fit it all in and the system was ready for its first sea trial in May 2022 when we set off for the Isle of Man.

The OpenCPN chartplotter and screen proved an immediate hit and we settled into a routine of creating the route on OpenCPN and then loading it via a GPX file into Navionics. In this way all our devices followed the same route and displayed the same data.

Updating the logbook became a quick and easy task, plus both helm and navigator had a real-time view of our progress. We were also really pleased to have the Raymarine C80 we’d inherited fully integrated into our navigation. While we like the portability of the iPad and the clarity of Navionics charts when on deck, in bad weather or when the helm wants to view a simple feed of boat data, the C80 comes into its own. So far so good!

yacht pi ais

The new nav station, complete with a red night light and three times as many switches

Power savers

Our onboard power consumption was also back under control thanks to the additional switches I had fitted and we could now keep the depth and wind instruments on while at anchor without the drain of other electronic devices hanging off the same wires.

This switch-per-device approach which was one of the main objectives of the upgrade has had some other unexpected benefits too – if AIS targets stop being received, for example, being able to reboot the AIS receiver without turning everything off and on is a real plus.

I’ve a few more plans for the navigation system, mainly to improve our access to weather forecasts when at sea or in anchorages off the Welsh coast that 4G can’t penetrate. Top of this list is to use it to receive and display in-depth weather information via WeatherFax and Navtex. I think I could squeeze another Raspberry Pi in there somewhere if I needed to!

Lessons learned

Reduce the drain

Managing power consumption is key. Modern tablets and phones use a lot more power than you think, especially compared to older purpose-built marine technology. Removing your dependency on them for long trips will give you greater sailing range.

Legacy backup

Make intelligent use of your navigation aids. In a storm, tablets and smart phones are not reliable and you may be unable to escape the helm to consult paper charts. Legacy marine navigational equipment was designed for the sea so make sure you have loaded your route in case the weather takes a turn for the worse.

Know your electrics

Most sailors know how to bleed their engine, but few have a working knowledge of the boat electrics. However, depth and wind speed/direction are vital for sailing. Gaining a basic understanding of your boat’s electrics and boat data is a sensible skill for modern seamanship.

Prepare for frustration

Rebuilding my navigation station was a hugely rewarding and exciting project. However, I had never tinkered with boat electrics or boat data before and the process required a lot of learning, dead-ends and frustration along the way as I tried to get devices to talk to each other.

Add extra time

Don’t underestimate the effort and time required to rebuild or rewire your switch panels. This project was only just completed in an off-season and it took many hours of effort.

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Research note

Raspberry pi as marine traffic radar, what i want to do.

I want to monitor and log commercial marine traffic using a Raspberry Pi as a "Software Defined Radio" with a low-cost digital tuner called the RTL-SDR. If successful, such a device could be deployed in locations such as the Gulf Coast in order to provide a comprehensive database of vessel locations which can be cross-referenced with data from other environmental sensors.

Why I'm Interested

My inspiration for this project came from the following story about a hactivist who was using an identical setup albeit one configured to track airplanes instead of ships..


. The story above dramatically illustrates the importance of the relationship between open data and the means through which the data was collected. There are any number of aircraft-tracking websites such as FlightAware that most assume would include the same information. Yet, someone who doesn't want to be tracked (in this case, the FBI contractor but it easily could be a company engaged in illegal ocean dumping etc...) would find ample opportunity to alter the data presented by such a service. Furthermore, as many airplane and marine tracking services operate on the "freemium" model, the type of in-depth analytics performed in the example would likely only be available for a substantial fee. By tracking the transmissions himself, he gets the raw details of every transmission within range. Thanks to the availability of low-cost,Open Source tools like the Beaglebone Black and Raspberry Pi, such sophisticated capabilities are now possible for the average individual. A ship tracking setup nearly identical as the one outlined above can be deployed to support existing PLOTs campaigns in say... the Gulf Coast? Or even the Gulf of Maine where data collected from Open Water sensors can be cross referenced with a database of tracked ship positions picked up by the monitoring station. The data can then be used to correlate the sensor readings to individual vessels who were in the area. Such data would be considerably more reliable then if it were collected from outside sources.

AIS and Ship Tracking

AIS stands for " Automatic Information System " and has emerged as the global standard for maritime position reporting. Since 2004 all vessels over 300 tons as well as commercial passenger vessels have been required to carry an AIS transponder. More signficantly, new US Coast Guard regulations slated to go into effect in March 2016 will require virtually any commercial vessel operating in U.S. waters to actively transmit an AIS signal. As such data is considered public domain, this will significantly enhance efforts such as environmental enforcement. However, the collection of such data is anything but consistent.


While some larger shipping carriers use satellite-based fleet tracking services, the vast majority of AIS transmissions are captured by land-based receivers. Online data services such as rely on a network of amateur radio operators in a manner akin to the network of weather stations connected to Most of these services will provide the station equipment to a volunteer free of charge if they are based in an area without coverage at that time. The equipment consists of a receiver, and a closed-source IP Box that sends the data directly to their servers. In exchange, the operators are usually given access to the "premium" features of the service, but they have no access to the actual data they are collecting. Alternately, a station operator can purchase the equipment themselves but a commercial AIS receiver alone normally costs about $500. Not including the software configuration, antenna etc...

####Enter Software Defined Radio! If it seems like this scenario has all the ingredients of a massive DIY disruption then your hunch is correct! It turns out that AIS ship tracking is but one of a host applications that can be mastered through techniques based on Software Defined Radio . According to

Specifically, the key piece of hardware is a $20 USB dongle called the RTL-SDR. Explained in detail in the site linked above-


The range of applications that can be accomplished using this cheap $20 dongle with the SDR technique is simply staggering. From its most popular use as a cheap ground-based aircraft radar to more "black hat" hacks like decoding GSM-cell phone airwaves hackers are continually devising new capabilities that normally require thousands if not millions of dollars worth of equipment. Other capabilities may be of significant interest to the citizen science community and might well deserve a dedicated wiki if interest is sufficient. A brief listing could include radio astronomy , receiving data from weather balloons , and even methods of receiving and decoding real-time satellite imagery from both russian and US (NOAA) spacecraft. Excellent tutorials with step by step instructions for these projects and many more can all be found at . For the purposes of this documentation however, I will stick to ship tracking...

My attempt and results

The original tutorial that introduced the concept of using an RTL-SDR for ship tracking is still the most thorough in my opinion and can be found at- . Following these instructions, I was receiving and plotting local ship traffic from my living room in about an hour! The Windows-based workflow includes an SDR decoder called SDR# , a method of translating the analog signal through the PC sound card called "audio piping", which was accomplished through a program called VB-Cable and a mapping-navigation program that can read the translated input called ShipPlotter .

The method has its limitations however. The major one, the fact that it requires a Windows PC entailed a certain degree of soul searching from a Linux partisan like myself... also means the method will be of limited use in a remote monitoring situation where the program would need to run continuously. Such a situation calls for an embedded system like a Raspberry Pi. Also, the method is only capable of receiving one VHF channel at a time, and because AIS trasmit over two channels, it means there would inevitably be some lost data. Finally, even though I was picking up transmissions right from the comfort of my couch, it became obvious that a suitable VHF antenna would be required.

Questions and next steps

Linux and raspberry pi.

Luckily, a Linux version of the workflow does exist and it even provides a way to receive both channels. Unluckily, this requires GNURadio which is one of those byzantine, unwieldy "experts only" programs that takes for granted its primary end-user will have a background in some obscure skillset (in this case short wave radio enthusiasts...). So replicating the successful Windows workflow in Linux has turned out to be something of a challenge... With that said, there is even a ready-made image for the Raspberry Pi that supposedly includes all the GNURadio drivers already. Even the "plug and play" version of GNURadio however has a steep learning curve and the AIS module, called gr-ais must be installed manually.

The original AIS tutorial on includes excellent instructions for building a DIY "Coaxial-colinear" antenna by soldering pieces of standard coaxial able in alternating polarities. I'm looking forward to this part as I have plenty of confidence in my soldering skills at least... A directional YAGI antenna may prove to be a better choice in my particular setting, but information on how to create or modify a Yagi to receive in the 162Mhz range has been difficult to come by.

In any case, the RTL-SDR dongle requires an adapter to fit on any standard antenna extension and while the RTL-SDR blog sells a custom adapter kit on Amazo n it ships from Germany apparently and won't arrive till who knows when... Thanks to a wonderful tutorial on Adafruit however, I've been able to test the signal using their Frequency Finder script on the Raspberry Pi with a TfT Touch Screen.


Because of the peculiarities of the Maine coastline, setting up an antenna with a proper Field of View is important. Luckily, the long, jagged peninsula I live on gives me the choice of two different directions. The following image (annotated from a panorama taken from a kite) shows the FOV for each location from a bird's eye view-


The same annotation can be seen in this aerial view-


Note that line-of-sight is interrupted towards due east, but the most direct line is SouthEast towards the Port of Portland. As this is also where the most commercial vessel activity will be centered, it makes the most sense to focus in this area. That will require a directional anetnna however, though I only have an omnidirectional antenna at present.


Apparently a cost-competitive alternative to the RTL-SDR AIS receiver is a little OSHW board called the dAISy which sells on for $50. For $30 more than the cost of an RTL-SDR you avoid a lot of hassle compiling drivers etc... In theory it should even be possible to do away with the Raspberry Pi altogether by replacing it with the $7 ESP2866 wifi transceiver as this hacker did ! Having tasted the Kool-Aid of the magical ESP2866 wifi chip myself, I can guarantee such a project is not for the feint at heart. Unless you have every AT Command commited to memory... Nevertheless, its always good to see the OSHW community moving away from the "hacked commercial product" model to the "For Us By Us" model. The dAISy is supposedly on backorder until June 15th so I'll definitely try to pick one up if I get the chance. If it works as advertised then it'll free up my RTL-SDR for other things!

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An additional site and show how to do it with any radio that will receive the correct frequency. is good also.

You probably want a cardioid pattern for your antenna since there is likely close to 180 degrees you want to receive from. The Moxon antenna ( ) would be good.

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RE:Any Radio? Wow! I had no idea! That could definitely be really useful if you already have compatible equipment for another purpose

RE:OpenCPN- As my 21 day trial period has expired for ShipPlotter, I've been working with OpenCPN a lot lately. The most common method seems to output the signal from SDR# to OpenCPN via AISMon but I can't get AISMon to pick up the packets, even though I can see them in SDR#...

RE:Antenna I have a wide ranging (25-300MHz) scanner antenna that I've been using. However, considering the unique geography of the Maine coastline, I'm thinking a directional antenna might be a better bet. I have some visuals showing my FOV from my house that I'll add to the note above...

RE: Tinkering Deeper- I can't help but to wonder if there's a simpler solution to the rather convoluted workflow in its current form (i.e decoding the analog signal via the PC soundcard etc...). Especially since something as lightweight as OpenWRT supports RTL-SDR packages and can run GPSD... I recently started a new thread at examining the potential for using the Arduino Yun to simplify the workflow. One of the possibilities I propose is to use the Linux side of the Yun as the AIS decoder and the Arduino side as an electronically tunable antenna ! The immediate problem being that this method only reaches bands as low as 700MHz and AIS is 162MHz...

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MAIANA ™: The Open Source AIS Transponder

yacht pi ais

Fig.MAIANA AIS transponder transmitting and receiving part with fixed antenna (Open Marine)

Peter Antypas self-built an AIS class B receiver / transmitter and presented it on Github:


The device combines the following functions:

  • AIS class B receiver / transmitter
  • 161.975 MHz (channel 87B), 162.025 MHz (channel 88B)
  • 2W transmission power
  • Silicon Labs 4463 transceiver ICs
  • STM32L412 microcontroller 80MHz
  • GPS Quectel L70R module, ceramic SMD antenna (for your own location transmission)
  • 3.3V UART output at 38.4Kbps
  • NMEA0183 data telegrams
  • Update rate 1 Hz
  • 12V / 30 mA
  • Disclosure of construction documents and the Software on Github

The AIS transponder consists of a transmitting and receiving part with a permanently attached antenna, which is connected to an adapter box via a shielded cable. The transmitting and receiving part receives and decodes the AIS signals and transmits them as NMEA0183 data stream with 3.3V voltage level to the adapter box, which can forward the NMEA0183 data stream in three different ways:

  • NMEA0183 USB output for PC or Raspi
  • NMEA0183 RS422

There is a separate adapter box for the respective output type. A normal shielded CAT5 network cable with RJ45 plugs is used as the connection cable. In addition to receiving AIS signals, MAIANA can also send AIS signals. Since the device has no CE certification and radio approval for AIS operation, it may only be used in receiving mode in Europe. In principle, transmission is also possible, which can be switched on via a switch on the adapter box.

The AIS transponder is sold through OpenMarine. On the website, the buyer is advised that he is buying a device that is not CE certified and approved. It is the responsibility of the buyer to comply with the respective approvals in his area of use. Finally, the device must not interfere with or impair the AIS data traffic when transmitting. Otherwise it would have fatal consequences. In Europe, the reception of AIS signals is not a problem, whereas the transmission operation requires a permit. According to Peter Anypas, the legal situation in the USA is different. There you can use devices you have built yourself in transmission mode if the transmission power is limited


yacht pi ais

Fig.MAIANA AIS transponder transmitting and receiving part

yacht pi ais

Fig.Transmit and receive part (Open Marine)

yacht pi ais

Fig.Adapter board USB version (Open Marine)

yacht pi ais

Fig.Adapter USB version (Open Marine)

yacht pi ais

Fig.Adapter RS422 version (Open Marine)

yacht pi ais

Fig.Adapter CAN version (Open Marine)

yacht pi ais

Fig.AIS transponder behind radar device (Open Marine)

yacht pi ais

Fig.MAIANA AIS transponder rear mounting (Open Marine)

Pleasure craft, MMSI 224295290

  • VesselFinder
  • Miscellaneous

The current position of CALA PI is at North East Atlantic Ocean reported 4 hours ago by AIS. The vessel is sailing at a speed of 0.1 knots. The vessel CALA PI (MMSI 224295290) is a Pleasure craft and currently sailing under the flag of Spain .

CALA PI photo

Position & Voyage Data

Predicted ETA-
Distance / Time-
Course / Speed 
Current draught-
Navigation Status Under way
Position received
Length / Beam12 / 4 m

Map position & Weather

Recent port calls.

CALA PI current position and history of port calls are received by AIS. Technical specifications, tonnages and management details are derived from VesselFinder database. The data is for informational purposes only and VesselFinder is not responsible for the accuracy and reliability of CALA PI data.

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11-11-2023, 14:22  
Boat: Islander Bahama 30
moving. I have a dAISy hat board and the other bits of coming. I know I have a lot of options for the Pi and I’ll eventually want to explore everything it can do for me. For now I just want to relay the tracks to my via and have them come up on my app. Does anyone have a link to a how-to on doing this, or do they have first hand on how to do so? Would either or allow for this? I used a Quark Elec A026 to do this before but I want to try out using the Pi because there’s a lot of other stuff I can do using the Pi. Thanks!
11-11-2023, 19:27  
Boat: Morgan 382
data, or you want a track of where you have been to be sent to ?

For live AIS data, it's pretty easy, just output it on a UDP port, and point Navionics at that port. You can do this directly in , or in SignalK.
11-11-2023, 20:52  
Boat: Islander Bahama 30
11-11-2023, 23:52  
in town by far for Pi IMHO...

11-11-2023, 23:59  
from the OpenCPN forum. Answers your question specifically. Remember that you need to have an active subscription for the Navionics app in order for it to receive AIS data.
12-11-2023, 00:55  
Boat: Islander Bahama 30
from the OpenCPN forum. Answers your question specifically. Remember that you need to have an active subscription for the Navionics app in order for it to receive AIS data.
13-11-2023, 02:16  
Boat: Islander Bahama 30
needs to be replaced. Or maybe the active splitter was reducing the range when I was using the A026? For some reason I’m getting a lot more hits and farther away with this new set up than with my old one… despite being in my apartment (I live by the marina…).

I’m enjoying seeing the AIS target so much zi may get a second Pi and a little desk top and just leave it set up in my apartmemt.

Anyway, I’m very pleased that I was able to get this working.The next will be installing it in my 1980s era cruiser, and then maybe getting the old Seatalk instruments to talk to it. I need some for too, since I don’t have sny on there yet…
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'Nothing short of a miracle': Missing N.L. fishing crew found safe and is returning home

Fishing boat lost contact wednesday evening, social sharing.

Image of a boat at dock with Elite Navigator written on side

The crew of the Elite Navigator, the fishing vessel missing since Wednesday, has been found safe.

It was the outcome all hoped for in the small town of New-Wes-Valley, N.L., where most of the crew are from. But it wasn't necessarily the outcome they expected.

"It's nothing short of a miracle," the town's mayor, Michael Tiller, said.

The entire crew was found in a life-raft by search-and-rescue teams Friday night after a handheld red flare was spotted during one of the conducted search patterns.

"A handheld red flare was spotted which led us to a life raft," the CCG said in an update on Saturday.

The crew members were transferred to the Canadian Coast Guard Ship Teleost by Fast Rescue Craft. They are on the way back to Valleyfield.

Premier Andrew Furey posted to social media at about 1 a.m. Saturday that search-and-rescue efforts had been a success.

"Our entire province is so relieved to hear the crew members of the Elite Navigator have been found and are returning to safety to their families, who have been waiting so anxiously for this good news," Furey posted. "Thank you to all the dedicated people involved in the search and rescue effort."

The missing vessel had a crew of seven. Five are from New-Wes-Valley, one is from Centreville-Wareham-Trinity and another from the Gander Bay region.

The boat went missing off the northeast coast of Newfoundland last week, with its last known location about 300 kilometres northeast of Gander as of Wednesday evening.

"Everybody is in good health with no obvious injuries," Furey told a news briefing on Saturday.

Man frowning in burgundy shirt.

Tiller said the entire region was holding its breath waiting for news, good or bad.

"Being human, you always have that fear in the back of your mind that the worst will happen. But when word started to spread last night ... it was like a huge weighted blanket lifted after region and people were celebrating it."

A significant fog bank about 15 nautical miles (about 28 kilometres) off the coast complicated search efforts on Thursday.

Search efforts expanded Friday.

  • Residents of New-Wes-Valley anxious for missing fishermen to be found safe, says mayor

Four coast guard vessels, as well as a Cormorant helicopter and Hercules aircraft, helped in the search. PAL Airlines also used sensors in fly-overs to try to locate the boat, and a number of fishing vessels also joined in.

Tiller said the entire incident just highlights how dangerous the profession of fishing can be.

"It hits home because in small-town Newfoundland, you know everybody. You know who they are and you know their parents, their relatives, you know the boat owners. You know basically everything about them," he said.

"You grew up with them and, you know, it's like losing a part of your family. It's just ... it's nothing short of a miracle that they're all on the way home." 

Download our  free CBC News app  to sign up for push alerts for CBC Newfoundland and Labrador.  Click here to visit our landing page .

With files from World Report

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Follow our news, recent searches, houthis claim strike on singapore-flagged container vessel in gulf of aden, advertisement.

The container vessel LOBIVIA was damaged after being hit by "unidentified projectiles", but its crew escaped unhurt and the ship made its way to Somalia's Berbera Port.

The Singapore-flagged container vessel LOBIVIA. (Photo: VesselFinder/Manuel Hernández)

SINGAPORE: A Singapore-flagged vessel was damaged in an attack by Iran-aligned Houthi militants southeast of Yemen on Friday (Jul 19).

In a statement, the Maritime and Port Authority of Singapore (MPA) said it was informed at about 10.30am that the container vessel LOBIVIA was hit by "unidentified projectiles" while transiting the Gulf of Aden, resulting in a fire onboard that was subsequently extinguished by the crew.

There are no Singaporeans among the crew, who are all accounted for and safe, the authority said.

Despite being hit, the LOBIVIA was able to set sail and had arrived at Somalia's Berbera Port. Damage assessment and repairs, if needed, will be carried out. 

MPA said it is in contact with the vessel manager of the LOBIVIA to provide any assistance required, adding that the Republic of Singapore Navy (RSN) has also alerted its security partners in the Gulf of Aden region to provide any required assistance.

Houthi military spokesperson Yahya Sarea said in a televised speech that the group had launched ballistic missiles and drones towards the LOBIVIA .

According to the United Kingdom Maritime Trade Operations, the LOBIVIA was hit about 83 nautical miles (154km) southeast of the port city of Aden, Yemen, on two separate occasions by two missiles on its port side.

"The ship was transiting northeast along the Gulf of Aden when a merchant vessel in the vicinity observed 'light and blast' where the ship was located," British security firm Ambrey added.

Ambrey said the ship appeared to perform evasive manoeuvres immediately and switched off its automatic identification system approximately an hour later.

Since November, Houthi militants in Yemen have launched drone and missile strikes in shipping lanes in the Red Sea and Gulf of Aden. The group has said its actions are in solidarity with Palestinians affected by Israel's war in Gaza .

The group has sunk two vessels and seized another, killed at least three sailors and severely disrupted global trade by forcing ship owners to avoid the Suez Canal trade shortcut.

On Tuesday, Liberia-flagged oil tanker Chios Lion was forced to turn back to assess damage and investigate a potential oil spill after being attacked by the group in the Red Sea.

Britain and the US have conducted retaliatory strikes since February, shooting down drones and bombing attack sites in Yemen.

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CNA Explains: What escalating Red Sea tensions mean for the world, including Singapore

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Commentary: Singapore takes pragmatic and principled approach to Red Sea crisis

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Salvage team to start pumping fuel from grounded vessel on South African coast

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The State Dept. said there might be a delay in consular services.

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