The person or company who is usually the supplier or owner of commodities shipped. Also called Consignor.

Pipe lines to a compartment for smothering a fire by steam or by a chemical.

The ship that carries an admiral's flag.

(1) A knot used to secure a line to another object such as a ring or cylindrical object or to another line; (2) Common term for an enlistment.

Joining the ends of two lines without increasing the thickness over the length of the splice, so that the splice will pass freely through a block.

Crew store managed by crew members offering everything from snacks to toiletries. Originally the name given to clothing that was issued to seamen.

The latest time cargo may be delivered to a terminal for loading to a scheduled train or ship.

The soft sandstone block sailors use to scrub the deck, so-called, because seamen were on their knees to use it.

Difference between minimum and maximum pressures for an air compressor. Also called cut in-cut out or load-no load pressure range.

To throw an oar out of the rowlock, and raise it perpendicularly on its end, and lay it down in the boat, with its blade forward.

Fitted with drilling rig (oil derrick with rotary drill and a mud pumping system), drilling for petroleum.

Is a process taking place under constant temperature. To compress the gas from state 1 to state 2, heat must be removed to keep the temperature constant. The pressure change is reciprocal to the change in specific volume.

The rotating element of a machine and, in the case of a compressor, is composed of the impeller (impellers) and shaft, and may include shaft sleeves and a thrust balancing device.

Prepare for going to sea, extra lashing on all movable objects.

Document listing all personal goods of crew members.

To touch bottom.

The joining of two timbers by beveling the edges so the same thickness is maintained throughout the length of the joint.

On a square-rigged ship, the act of lowering a spar or yard to the deck.

The gauge pressure at which a safety valve visibly and audibly opens or at setting which a relief valve discharges an unbroken stream of liquid.

(1) Said of seas that break over a vessel or over a sea wall. (2) A whale breaches when it leaps out of the water.