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Experience gained during training and operational usage showed the aluminum monohull transmitted the impact with the water to the craft's occupants more readily than a composite hull. Even after modifications such as the addition of shock-absorbing seats, the boats are capable of generating up to 20 Gs of force while slamming across waves.
The Landing Craft Air Cushion (LCAC) is a class of air-cushioned landing craft used by the United States Navy and the Japan Maritime Self-Defense Force (JMSDF). They transport weapons systems, equipment, cargo and personnel from ship to shore and across the beach.
Begun in 1975, the yard became the sole source for overhaul of the Coast Guard's 5" 38 caliber gun mount. The 5" gun mounts were used on the service's 378' cutters. In 1971, the yard completed construction of a prototype 41' utility boat (UTB) which had an aluminum hull and fiberglass superstructure. The yard-built boat was adopted and from ...
Aluminum and aluminum alloys are used both in sheet form for all-metal hulls or for isolated structural members. Many sailing spars are frequently made of aluminium after 1960. It is the lightest material for building large boats (being 15–20% lighter than polyester and 30% lighter than steel).
The multi-chine hull approximates a curved hull form. It has less drag than a flat-bottom boat. Multi chines are more complex to build but produce a more seaworthy hull form. They are usually displacement hulls. V or arc-bottom chine boats have a V shape between 6° and 23°. This is called the deadrise angle. The flatter shape of a 6-degree ...
The island was reachable only by boat until 1965, when a toll bridge-and-causeway was built from Eastpoint (the $2 toll was dropped in 1992 after the bridge was paid off). In 2004, the bridge-and ...
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