Quantcast Glossary -Cont. - 1025_40083

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MIL-HDBK-1025/4
Dock.  A pier or wharf used for berthing vessels and for transfer of cargo or
passengers.
Dolphin.  A structure usually consisting of a cluster of piles.  It is placed
near piers and wharves or similar structures, or alongshore, to guide vessels
into their moorings or to fend vessels away from structures, shoals, or the
shore.
Draft.
Depth of vessel hull below the waterline.
Dredge Line.
Line establishing limit of dredging.
Ebb Tide.  The period of tide between high water and the succeeding low water;
a falling tide.
Fender.  A device or framed system placed against the edge of a dock, to take
the impact from berthing or berthed vessel.
Flood Tide.  The period of tide between low water and the succeeding high
water; a rising tide.
Freeboard.  Distance between the weather deck of a floating vessel and the
water line.
Harbor.  In general, a sheltered arm of the sea, easily accessible to maritime
routes in which ships may seek refuge, transfer cargo, and undergo repair.
Harbor Lines.  Lines which control the location of shore structures in or
adjacent to navigable waters.
Hurricane.  An intense tropical cyclone in which winds tend to spiral inward
toward a core of low pressure, with maximum surface wind velocities that equal
or exceed 80 mph (70 knots) for several minutes or longer at some points.
Tropical storm is the term applied if maximum winds are less than 80 mph.
Lagging.
Horizontal timber sheeting commonly used in bulkhead walls.
Lee.
(1) Shelter, or the part or side sheltered or turned away from
the wind or waves.
(2) The quarter or region toward which the wind blows (chiefly
nautical).
Mean High Water (MHW).  The average height of the high water over a 19-year
period.  For shorter periods of observations, corrections are applied to
eliminate known variations and reduce the results to the equivalent of a mean
19-year value.
Mean Low Water (MLW).  The average height of the low waters over a 19-year
period.  For shorter periods of observations, corrections are applied to
eliminate known variations and reduce the results to the equivalent of a mean
19-year value.
Mean Sea Level.  The average height of the surface of the sea for all stages
of the tide over a 19-year period, usually determined from hourly readings.
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