The lowest deck in a ship having four or more decks

Related Terms

BUMPKIN

The spar projecting from stern of ship

TRAMP FREIGHTER

A cargo ship engaged in the tramp trade.

CORDAGE

Ropes in the rigging of a ship

WEATHER SIDE

The side of a ship exposed to the wind.

FREEBOARD DECK

Deck to which freeboard is measured

DOGWATCH

A short, evening period of watch duty on a ship

TWEEN DECK

The space between any two adjacent decks

FARDAGE

A wood placed in bottom of ship to keep cargo dry

FORESAIL

The lowest sail set on the foremast of square-rigged ship

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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