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Clinker-built, also known as lapstrake-built, [1] [2] is a method of boat building in which the edges of longitudinal (lengthwise-running) hull planks overlap each other. Where necessary in larger craft, shorter hull planks can be joined end to end, creating a longer hull plank ().
Then, on a single day, the cement is applied by a team of plasterers. The cement:sand ratio is a very rich 4:1. As the hull thickness is typically 2.5 to 3 cms, ferrocement is unsuitable for boats less than about 15 metres LOA as there is a weight penalty; above that length there is no penalty. Properly plastered ferrocement boats have smooth ...
All through-hull fittings are equipped with bronze seacocks. There are two manual bilge pumps, as well as an automatic electric bilge pump. There are eight cockpit and deck scuppers. There is a pressurized water system and manual fresh and salt water pumps in the galley. The galley sink has a macerator pump which also serves the ice box drain.
Information, parts and support is now handled by Penn Yan Parts & Accessories (www.pennyanboats.com) [3] [4] In 1936, Penn Yan introduced its "Car Top" outboard boat. The Car Top, which Penn Yan marketed as being easily lifted by two people, was designed to be light and narrow enough to fit on top of most cars of that era. [5]
Carvel built or carvel planking is a method of boat building in which hull planks are laid edge to edge and fastened to a robust frame, thereby forming a smooth surface. Traditionally the planks are neither attached to, nor slotted into, each other, having only a caulking sealant between the planks to keep water out.
The Optimist has a pram hull, originally formed primarily from five pieces of plywood. It was the biggest hull Clark Mills could make from two 4 ft by 8 ft sheets. Just in front of a bulkhead, which partitions the boat nearly in half, is the daggerboard case. Right behind it on the centerline of the hull floor are attached a block and a ratchet ...