A plate serving the purpose of a swash bulkhead, but not extending to the bottom of the tank
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SHELL PLATING
The plates forming the outer side and bottom skin of the hull
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SHELL PLATING
The plates forming the outer side and bottom skin of the hull
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SLOP TANK
A tank in a tanker into which the residue of tank washing are pumped.
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STEALER
A single wide plate that is butt-connected to two narrow plates, usually near the ends of a ship.
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FARDAGE
A wood placed in bottom of ship to keep cargo dry
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HOLDING GROUND
The bottom ground of an anchorage. The expression is usually used with a modifying adjective to indicate the quality of the holding power of the material constituting the bottom
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POLAR COMPOUND
A chemical compound whose molecules exhibit electrically positive characteristics at one extremity and negative characteristics at the other. Polar compounds are used as additives in many petroleum products. Polarity gives certain molecules a strong affinity for solid surfaces; as lubricant additives (oiliness agents), such molecules plate out to form a tenacious, friction- reducing film. Some polar molecules are oil-soluble at one end and water-soluble at the other end; in lubricants, they act as emulsifiers, helping to form stable oil-water emulsions. Such lubricants are said to have good metal-wetting properties. Polar compounds with a strong attraction for solid contaminants act as detergents in engine oils by keeping contaminants finely dispersed.
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CYLINDER HEAD
Plate or cap which encloses compression end of compressor cylinder or combustion chamber of engine.
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UP FLOW
The operation of an ion-exchange unit in which solutions are passed in at the bottom and out at the top of the container.
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CENTERBOARD
A board or plate lowered through the hull of a dinghy on the centerline to resist leeway.
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