The middle portion of a ship
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BUMPKIN
The spar projecting from stern of ship
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TRAMP FREIGHTER
A cargo ship engaged in the tramp trade.
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CHINE
The intersection of the middle and sides of a boat
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CORDAGE
Ropes in the rigging of a ship
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WEATHER SIDE
The side of a ship exposed to the wind.
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DOGWATCH
A short, evening period of watch duty on a ship
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FARDAGE
A wood placed in bottom of ship to keep cargo dry
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FORESAIL
The lowest sail set on the foremast of square-rigged ship
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INDIRECT ECHO
A radar echo which is caused by the electromagnetic energy being transmitted to the target by an indirect path and returned as an echo along the same path. An indirect echo may appear on the radar display when the main lobe of the radar beam is reflected off part of the structure of the ship (the stack for example) from which it is reflected to the target. Returning to own ship by the same indirect path, the echo appears on the PPI at the bearing of the reflecting surface. Assuming that the additional distance by the indirect path is negligible, the indirect echo appears on the PPI at the same range as the direct echo received. Also called FALSE ECHO.
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MULTIPLE ECHOES
Radar echoes which may occur when a strong echo is received from another ship at close range. A second or third or more echoes may be observed on the radarscope at double triple, or other multiples of the actual range of the radar target, resulting from the echo’s being reflected by own ship back to the target and received once again as an echo at a multiple of the preceding range to the target. This term should not be confused with MULTIPLE-TRACE ECHO.
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