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Some ships are made from glass reinforced plastics but the vast majority are steel with possibly some aluminium in the superstructure. [7] The complete structure of the ship is designed with panels shaped in a rectangular form consisting of steel plating supported on four edges.
Ships have supported exploration, trade, warfare, migration, colonization, and science. Ship transport is responsible for the largest portion of world commerce. The word ship has meant, depending on the era and the context, either just a large vessel or specifically a ship-rigged sailing ship with three or more masts, each of which is square ...
The blue and white part of the ship is the superstructure and the yellow part of the ship is the hull. A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships. [1]
On a boat or ship, the primary or upper deck is the horizontal structure that forms the "roof" of the hull, strengthening it and serving as the primary working surface. Vessels often have more than one level both within the hull and in the superstructure above the primary deck, similar to the floors of a multi-storey building, that are also ...
The volume of a ship's hull below the waterline (solid), divided by the volume of a rectangular solid (lines) of the same length, height and width, determine a ship's block coefficient. Coefficients [5] help compare hull forms as well: Block coefficient (C b) is the volume (V) divided by the L WL × B WL × T WL. If you draw a box around the ...
These ships used two types of sail of their invention, the junk sail and tanja sail. Large ships are about 50–60 metres (164–197 ft) long, had 5.2–7.8 metres (17–26 ft) tall freeboard, [35] each carrying provisions enough for a year, [36]: 464 and could carry 200–1000 people. The Chinese recorded that these Southeast Asian ships were ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 18 January 2025. Back or aft-most part of a ship or boat For other uses, see Stern (disambiguation). Detailed schematic of an elliptical or "fantail" stern The flat transom stern of the cargo ship Sichem Princess Marie-Chantal The stern is the back or aft -most part of a ship or boat, technically defined ...
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.