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The strength of ships is a topic of key interest to naval architects and shipbuilders. Ships which are built too strong are heavy, slow, and cost extra money to build and operate since they weigh more, whilst ships which are built too weakly suffer from minor hull damage and in some extreme cases catastrophic failure and sinking.
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 hulls with fine lines, and amateur builders are advised to use professional plasterers to produce a smooth finish.
Aluminum's strength-to-weight ratio exceeds that of steel, so Aluminaut 's 6.5-inch-thick (170 mm) shell could withstand pressures of 7,500 pounds per square inch (52 MPa) at the sub's 17,000 ft (5,200 m) maximum diving range. [3] The Aluminaut was designed at the Woods Hole Oceanographic Institution in Woods Hole, Massachusetts. A full-scale ...
Naden Boats is a line of aluminum fishing boats manufactured in Canada by Temagami Boat Manufacturing Inc. Six models are offered, ranging from 11’11" to 16’ in overall length. They are noted for their expanded polystyrene flotation, rigid construction, and semi-V planing hull with five keels.
5086 is the preferred hull material for small aluminium boats or larger yachts. Its high strength and good corrosion resistance make it an excellent match for yachting. [1] 5086 has a tendency to undergo Stress corrosion cracking and is not used much in aircraft construction as a result. [3]
The boat's hull and superstructure are constructed entirely from 5456 marine grade aluminum. [3] Designed with a hard chined deep "V" planing hull, [8] the 47′ MLB exceeds its hull speed. The frame is composed of 17 vertical bulkhead frames, each of which is welded to the deck and hull, and five of which are watertight. [8]
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