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Concrete ships are built primarily with ferrocement ( reinforced concrete) hulls, reinforced with steel bars. [ 1] This contrasts against more traditional materials, such as pure steel or wood. The advantage of ferrocement construction is that materials are cheap and readily available, while the disadvantages are that construction labor costs ...
SS United States is a retired ocean liner built between 1950 and 1951 for United States Lines.She is the largest ocean liner constructed entirely in the United States and the fastest ocean liner to cross the Atlantic in either direction, retaining the Blue Riband for the highest average speed since her maiden voyage in 1952, a title she still holds.
David Cheap. Captain David Cheap (1697 – 21 July 1752) was a Scottish Royal Navy officer. [ 1][ 2] He is known for two incidents in his career. [ 1] First, he was in command of HMS Wager when it was wrecked in May 1741 on the shores of Wager Island in Chilean Patagonia. Second was his capture of a Spanish galleon in 1746, the prize of which ...
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). Aluminium is relatively cheap in comparison with wood or steel in most countries. In addition it is relatively easy to cut, bend and weld.
Careening. Careening (also known as "heaving down") is a method of gaining access to the hull of a sailing vessel without the use of a dry dock. It is used for cleaning or repairing the hull. Before ship's hulls were protected from marine growth by fastening copper sheets over the surface of the hull, fouling by this growth would seriously ...
Composite ship. The technique of composite ship construction ( wooden planking over a wrought iron frame) emerged in the mid-19th century as the final stage in the evolution of fast commercial sailing ships . Construction of wrought iron hulled vessels had begun in the 1820s and was a mature technology by the time of the launch of the SS Great ...
Cargo net. A cargo net being used to unload sacks from a ship at Haikou New Port, Haikou City, Hainan, China. A cargo net is a type of net. It is usually square or rectangle, but sometimes round, made of thick rope, with cinch ropes extending from the corners, and in some designs, the edges. It is named for its use in transferring cargo to and ...
Netflix will start phasing out its Basic plan, its cheapest advertising-free plan, which costs $11.99 per month in the United States, the company said on Thursday. The company had previously ...