An elevated full width forward deck providing cabin headroom below.
Related Terms |
BEAM
The width of a ship. Also called breadth.
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BREADTH
The width of a ship.
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FREEBOARD DECK
Deck to which freeboard is measured
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HALF-POWER POINTS
Power ratios used to define the angular width of a radar beam. One convention defines beam width as the angular width between points at which the field strength is 71 percent of its maximum value. Expressed in terms of power ratio, this convention defines beam width as the angular width between half-power points. A second convention defines beam width as the angular width between points at which the field strength is 50 percent of its maximum value. Expressed in terms of power ratio, the latter convention defines beam width as the angular width between quarter- power points.
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FORWARD
The front part of a ship.
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TWEEN DECK
The space between any two adjacent decks
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AHEAD
Forward of the bow.
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CUTWATER
The forward curve of the stem of a ship
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FLUSH DECK
The upper deck of a vessel that extends unbroken from stem to stern.
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INTERFEROMETER
An apparatus used to produce and measure interfer- ence from two or more coherent wave trains from the same source. Used to measure wavelengths, to measure angular width of sources, to determine the angular position of sources (as in satellite track- ing), and for other purposes.
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