An automatic or manual device designed to control pressure, flow or temperature.

An emergency signal flare that will float down on a parachute after launch, hopefully improving its visibility.

A shortening of the term, "Roll On/Roll Off." A method of ocean cargo service using a vessel with ramps which allows wheeled vehicles to be loaded and discharged without cranes.

Carries supplies to drilling units or installations during field de-velopment or production.

(SEE NEAPED)

Speed Over Ground, speed relative to bottom.

Small stuff seized across a hook to prevent it from unshipping (once hooked, mousing keeps the hook on).

Wide, a wide boat is a beamy boat

Percentage of freight payable to broker (by owners in c/p's) or applicable to sale or purchase.

To the bow of the boat, forward of the beam.

An aid to taking as astronomical sight with a sextant when the sea horizon is obscured through haze, fog, or darkness.

A navigational aid that emits radio waves for navigational purposes. The radio beacon's position is known and the direction of the radio beacon can be determined by using a radio direction finder.

A bearing 180

Deck supported by pillars, fastened to pontoons. The pontoons are half submerged during operations. Kept in position by anchors (or by dynamic positioning). Normally equipped with its own propulsion machinery.

A published rate that is never assessed because no freight moves under it.

To lash up.

Heavy latch by which doors, hatches, portholes, etc., are secured; verb - to latch

Said of a vessel when the depth of water can be measured by the lead (within the 100 fathom curve).

American Standards Committee X12 responsible for developing EDI standards for the United States.

Differences between the compass reading and an actual magnetic direction caused by magnetic forces in the vicinity of the compass, which are usually the result of masses of metal, speaker magnets, etc. (2) Vessel departure from specified voyage course.