1. Having freedom of motion interfered with by collision or entanglement; entangled; the opposite of clear. For instance, a rope is foul when it does not run straight or smoothly, and an anchor is foul when it is caught on an obstruction. 2. A breach of racing rules. 3. An area of water treacherous to navigation due to many shallow obstructions such as reefs, sandbars, or many rocks, etc. 4. Foul the range: To block another vessel from firing her guns at a target.

Related Terms

AFT

Back of the vessel.

ASTERN

A backward movement of a vessel

ATHWARTSHIP

Across the ship, at right angles to the fore-and-aft centerline

UPBOUND

A vessel traveling upstream.

BEAM

The width of a ship. Also called breadth.

BREADTH

The width of a ship.

AFFREIGHTMENT

A hiring of a vessel

CORROSION INHIBITOR

Additive for protecting lubricated metal surfaces against chemical attack by water or other contaminants. There are several types of corrosion inhibitors. Polar compounds wet the metal surface preferentially, protecting it with a film of oil. Other compounds may absorb water by incorporating it in a water-in-oil emulsion so that only the oil touches the metal surface. Another type of corrosion inhibitor combines chemically with the metal to present a non- reactive surface.

CATAMARAN

A double hulled vessel

DEMULSIBILITY

The ability of a fluid that is insoluble in water to separate from water with which it may be mixed in the form of an emulsion.

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