A structure, usually masonry, projecting out from the shore; a jetty may protect a harbor entrance.

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A lock of very large size and usually of irregular shape, the gates of which are kept open for several hours after high tide so that vessels may enter as long as there is sufficient depth over the sill. Vessels remain in the half-tide basin until the ensuing flood tide before they may pass through the gate to the inner harbor. If entry to the inner harbor is required before this time, water must be admitted to the half-tide basin from some external source.


The part of a harbor most remote from the sea, as con- trasted with the OUTER HARBOR. These expressions are usually used only in a harbor that is clearly divided into two parts by a narrow passageway or man-made structures.


Heading toward the land or up a harbor away from the open sea


A ship designed to operate in any number of roles supporting ships and other operations, including a wide range of activities related to replenishment, transport, repair, harbor services, and research.


A place where ships in transit can find shelter from a storm. These are often man-made jetty enclosed areas along a featureless coastline where no nearby natural deep water harbors exist.


An intention of a ship or its captain, to steer, sail, or steam, usually used in conjunction with a specified direction or destination: The ship stood out of the harbor or The ship stood toward the east or The ship stood toward the missing vessel's last known position.


A ship used to carry soldiers. Troopships are not specially designed for military operations and unlike landing ships cannot land troops directly onto a shore; instead they unload troops at a harbor or onto smaller vessels for transportation to shore.


To remove sediment from harbor or river bottoms for safety purposes and to allow for deeper vessels.


A port of haven where ships may anchor


A private organization having representatives throughout the main harbors in the U.S. It is empowered to inspect cargoes of a hazardous nature and issue certificates which are automatically approved by the Coast Guard.

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