MIL-HDBK-1025/5
Dolphin. A cluster of batter pilings joined at the top, and placed near piers
and wharves, or alongshore, to guide vessels into their moorings; to fend
boats away from structures, shoals, or the shore; and for anchorage of
floating piers.
Down drift.
The direction of predominant movement of littoral materials.
Depth of craft hull below the waterline.
Draft.
Eddy Current. A circular movement of water formed on the side of a main
Eddies may be formed at points where the main stream passes
current.
projecting obstructions or where two adjacent currents flow counter to each
other.
(1) The part of a river that is affected by tides.
Estuary.
(2) The region near a river mouth in which the freshwater of the
river mixes with the saltwater of the sea.
Parts of a waterway that are open and unobstructed for navigation.
Fairway.
Fender. A protective bumper or framed system placed against the edge of a
dock, designed to prevent damage caused by impact of berthing or berthed
boats.
Filter. The underlayer of small rock or gravel or sand that permits proper
seepage and dissipation or distribution of water beneath or behind a structure
wall or riprap slope without allowing the earth or there retained material to
escape.
Finger Pier. A smaller pier structure attached (usually perpendicular) to the
head walk of a multislip pier; provided to facilitate access to the berthed
craft.
The distance from the waterline to main deck or gunwale.
Freeboard.
Gangway. A pedestrian or handcart bridge affording access from shore or
shore- connected fixed pier to a floating structure (sometimes called brow).
Groin. A shore protection structure built, usually perpendicular to the
shoreline, to trap littoral drift or retard erosion of the shore.
Guide Piles. Piles in a floating dock system that resist the horizontal
displacement of the system but allow and guide its vertical movement with
changes in the level of the water surface.
The upper edge of the side of a ship or a boat.
Gunwale.
Harbor. A sheltered area of the sea or ocean, easily accessible to maritime
routes in which vessels may seek refuge, transfer cargo, and undergo repair
and refueling.
Head walk. The main walkway on a multislip pier; supports utility lines,
lighting system, firefighting equipment, and locker boxes.
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