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2. (Usually in the plural: "bilges") The compartment at the bottom of the hull of a ship or boat where water collects and must be pumped out of the vessel; the space between the bottom hull planking and the ceiling of the hold. [2] 3. To damage the hull in the area of the bilge, usually by grounding or hitting an obstruction. 4.
The word "keel" comes from Old English cēol, Old Norse kjóll, = "ship" or "keel".It has the distinction of being regarded by some scholars as the first word in the English language recorded in writing, having been recorded by Gildas in his 6th century Latin work De Excidio et Conquestu Britanniae, under the spelling cyulae (he was referring to the three ships that the Saxons first arrived in).
Single hull, Double bottom, and Double hull ship cross sections. Green lines are watertight; black structure is not watertight. A double hull is a ship hull design and construction method where the bottom and sides of the ship have two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is some distance inboard ...
The relationship between monohulls & multihulls. A multihull is a boat or ship with more than one hull, whereas a vessel with a single hull is a monohull.The most common multihulls are catamarans (with two hulls), and trimarans (with three hulls).
It provides extra stiffening and strength to the hull. It was a common feature of heavy wooden ship construction, particularly from the Middle Ages to the early years of the 19th century, being a major constructional component of ships like USS Constitution , HMS Victory and many earlier vessels.
The plans for the hull of a 26-ft yawl built for the Royal Navy in 1809 in Portsmouth Dockyard. It is fitted for 10 oars. The yawl as a type of Royal Navy ship's boat appeared early in the second half of the 17th century. In early mentions, they were sometimes referred to as "Norway yawls", so showing a Scandinavian influence.
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Volume (V or ∇) is the volume of water displaced by the hull. 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: