An inspection cover or port in an air receiver tank.

Is the ratio of the polytropic compression energy transferred to the gas to the actual energy transferred to the gas.

Boat carried at davits on quarter of ship, and kept ready for immediate use when at sea.

The ring bolted to the upper end of the shank of an anchor and to which the bending shackle secures.

Nickname for a ship's cooper.

A weight attached to a line used to determine depth by lowering it into the water.

A vessel discharges part of its cargo at anchor into a lighter to reduce the vessel's draft so it can then get alongside a pier.

The total rate from the point of origin to final destination.

Capable of keeping out water.

Secure hatches and loose objects both within the hull and on deck.

A party named in an instrument as the beneficiary of the funds. Under letters of credit, the payee is either the drawer of the draft or a bank.

Goods floating on surface of sea after a wreck.

Official terminology for life jacket. When properly used a PFD will support a person in the water. Also called a life jacket, life preserver or life vest.

A small crane that projects over the side of the boat to raise or lower objects (such as smaller boats) from or to the water.

An act of Congress (1903) prohibiting rebates, concession, misbilling, etc. and providing specific penalties for such violations.

The stay that the jib is hoisted on. Usually the headstay.

Hoisting the ensign at 8 a.m. and down at sunset.

Abbreviation for "With Particular Average."

Said of anchor when it is under ship's forefoot, and cable is nearly up and down.

(1) A nautical instrument, on the arc of which is a finely graduated scale showing degrees and minutes, with adjustable reflectors, etc.; used to find the altitude of heavenly bodies, angular distances, etc. (2) On a steering gear, the rudder quadrant is ...