force 5 sailboat cover

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Force 5 Sailboat Parts, Sails & Equipment

Force 5 Dolly

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• Sailboat Guide

1976 AMF Force 5

• Description

Seller's Description

I am selling my well-maintained Force 5 sailboat and trailer. It’s like a slightly larger Laser. It’s in great condition and I’ll be sad to part with it, but I’m upgrading to a catamaran.

Highlights Include:

• High tech lines in like new condition
• 3 sails, including 2 rarely used and like new (including a short rig)
• Custom cover
• Trailer included
• Usable launching dolly

More Details - Condition: This sailboat is used but in good condition, and ready to hit the water. The hull is solid, and there are no major repairs or damages. It has been stored properly, on it’s dolly at the beach and under a custom cover ensuring its longevity. - Sails: The boat comes with three sails, including a rarely used main sail and a rarely used “short rig” sail, allowing for versatility in different wind conditions. - Running Rigging: The running rigging is in excellent shape, with most lines in good or like-new condition. I recently replaced the outhaul line on the boom. - Trailer: A sturdy trailer is included in the sale. The trailer is in decent condition and features custom bunks specifically designed for the Force 5 sailboat, ensuring secure and convenient hauling. 2inch ball needed. - Upgrades: The daggerboard, rudder, and daggerboard trunk have been reinforced by the previous owner, enhancing the durability. - Extras: As a bonus, a few spare spars, custom cover, and repaired launching dolly are included.

Whether you’re an experienced sailor or a novice looking to start your sailing adventures, this Force 5 sailboat offers the perfect combination of performance, reliability, and fun. It’s an excellent opportunity to own a well-equipped sailboat at an affordable price.

Price: $1500

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

• SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
• D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

The FORCE 5 was designed in 1972 by Fred Scott and Jack Evans of AMF Alcort. By 1974 it was their second best selling boat. Over 12,000 boats were built up until 1989 when AMF Alcort changed hands several times in a short period of time. In 1993, Weeks Yacht Yard became the new builders of the FORCE 5.

This listing is presented by SailboatListings.com . Visit their website for more information or to contact the seller.

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Description

The Moskva-5 (MOCKBA-5 in cyrillic writing) was produced by KMZ ( Krasnogorskii Mechanicheskii Zavod or Krasnogorsk Mechanical factory) in the 1950s. Earlier models of the Moskva were copies of the Zeiss Ikon Super Ikonta C , but it makes more sense to call the Moskva-5 an adaptation. Unlike the Super Ikonta, its solid top plate has a built-in rangefinder and a dual-format viewfinder . The best thing about the Moskva-5 is the coupled rangefinder. A lever with rotating wedge-shaped prisms is fixed to the lens plate. Turning the lens to focus rotates the glass, thus adjusting the rangefinder: a very sophisticated device inherited from the Super Ikonta, with no mechanical linkage between the lens and the body. The two windows are 6.5 cm apart for accurate focusing. The separate viewfinder has a larger field of view, which helps composing the picture. As stated above, a sliding frame in the viewfinder selected on top of the camera can be set to 6×9 or 6×6.

The back of the camera showing the year of production (1958), two red windows for 6×6 and 6×9 numbering, the rangefinder window (left) and the separate viewfinder window (right). The symbol to the left of the serial number is the Krasnogorsk company logo.

Dual Format

Super Ikontas were made either for the 6×9 or 6×4.5 format. The Moskva-5 is a 6×6 and 6×9 camera. Since it has a fixed 105mm Industar lens, at 6×6 you have a mild tele at your disposal. To use the 6×6 size, you need to set the viewfinder to the square format. there is a lever to select the right window so you can see the numbering on the film back. The pressure plate does not need to be removed. The 6×9 red window is now blocked, so there's no room for confusion.

As a last step, the 6×6 mask has to be inserted. The camera locks right into its holes. Close the camera and you're ready to shoot.

The Moment 24c is a leaf shutter with speeds of B, 1 to 1/250s. To fire it, the film needs to be transported or the release button will be blocked, indicated by a red window on the top plate. The shutter isn't set by advancing the film; it has to be cocked at the lens by a lever. To take a picture, press the button on the left of the camera top. The button on the right is for unlocking the front plate when the camera is collapsed. Before folding the camera, you shouldn't forget to push down the lever with the polarised glass window.

• Moskva-2, -4 and -5 user manual at Butkus.org
• Tips for using the Moskva at Photosensitive
• Moskva 5 archived bulletin-board discussions, formerly at Robert Monaghan's Medium Format Photography Megasite (archived copy dated 8 May 2006, at Internet Archive )
• Locating light leaks in a Moskva 5 at Nelsonfoto forums (archived)
• Fixing light leaks (in french) at Dirapons'site
• Flickr image
• 6x9 rangefinder folding
• 6x6 rangefinder folding
• Soviet cameras
• Image by Dries van den Elzen
• Image by Siim Vahur

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