Plankton like crustaceans found in the Southern Ocean.
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PLANKTON
Floating, drifting, or feebly swimming plant and animal organisms of the sea. These are usually microscopic or very small, although jellyfish are included.
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D.G.P.S.
Differential global positioning system that refines a ship stations G.P.S. positions by referring those to simultaneously found readings obtained by a shore system with known position. Error in East and West can be calculated from the later and assumed to equally apply to the ship station.
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DIAGONALS
Fairing lines added to a vessel's body plan. They take the form of straight lines (usually three in smaller craft) drawn diagonally from the centreline, to strike the area of the waterline. The projection a line drawn from the series of intersection points found (of diagonal & waterline) along the hull, gives an indication of the likely water flow across the structure.
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FOUND
To be equipped. To fit firmly.
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LIGHTS
1) A general term for the night illuminations of vessels/navigational aids whose specification is found in collision regulations, lists of lights and port information. 2) A thick plate of glass fitted in a vessel's structure to provide a watertight light ingress.
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OBSERVED POSITION
Position found by observing heavenly bodies.
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OREGON
American straight grained red softwood timber properly called Douglas Fir. Recently quick grown Oregon is found with large knots, rendering it structurally unreliable in thinner board thicknesses.
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PANTING BEAMS
Found forward of the collision bulkhead found athwartships attached to the panting stringers.
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PROBABILITY AREA
The area in which a missing craft and/or survivors are most likely to be found taking into account possible errors in the navigation of the missing craft and of the search craft.
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STRUT BEARING
The aftermost bearing for a propeller shaft found in the strut.
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