con deffs 121-160

con deffs 121-160 - Marc Pottey October 4, 2007 Ships...

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Marc Pottey October 4, 2007 Ships construction definitions 121-160 121. Deep tank- These usually consist of ordinary hold compartments but strengthened to carry water ballast. They are placed at either or both ends of the engine and boiler space. They usually run from the tank top up to or above the lower deck 122. Deflection- The movement of a structure or structural part as a result of stress 123. Die- A tool, having several cutting edges, used for cutting threads 124. Discontinuity- a break or gap 125. Displacement-the measure of the water pushed aside by a floating vessel equal to its weight 126. Displacement ton- a unit for measuring the displacement of a vessel, equal to a long ton of 2240 lb. (1016 kg) or 35 cu. ft. (1 cu. m) of seawater 127. Displacement tonnage- weight of empty ship 128. Docking keel- used in dry dock to take the entire weight of a ship on blocks 129. Docking plug- plugs screwed in to ship to drain compartments when in dry dock 130. Dog- Holding devices used on doors, hatch covers, air ports and other hinged parts of a ship 131. Double bottom- the space between the inner and outer skins of a vessel
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con deffs 121-160 - Marc Pottey October 4, 2007 Ships...

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