The area of sea not under the sovereignty of nations with a seaboard.

Wooden shoulders attached below the masthead to either side of a wooden mast which originally supported the trestle trees.

The relative humidity of a gas (or air) vapor mixture is the ratio of the partial pressure of the vapor to the vapor saturation pressure at the dry bulb temperature of the mixture.

Micrometer or one millionth of a meter; micron is sometimes represented in filtration by the Greek letter

An ocean carrier company operating vessels not on regular runs or schedules. They call at any port where cargo may be available.

Passing another vessel.

To hold off a boat with a staff, boathook, long spar, etc., to prevent her from coming along too heavily. also known as Fend Off.

A round wood plug inserted in a hole to cover a nail, screw, or bolt.

Logistics Over The Shore.

Shipments loaded and sealed by shippers and not checked or verified by the carriers.

Shipper's instructions to carrier for forwarding goods; usually the triplicate copy of the bill of lading.

Two or more bearings are noted on the chart in order to determine the ship's position at the intersection of the two

(1) The points of the jaws of a boom or gaff where they embrace the mast. (2) The outer ends of the crosstrees.

A call on the bo'sun's pipe at night for the hands to turn in, for silence in the messdecks, and for lights to be extinguished. Also a term used by a sailor to another to make them stop talking.

The horsepower input to the compressor shaft, or more generally to any driven machine shaft.

A device designed to enable accumulated liquids to be held for draining in a compressed air system.

Compartment in the hold of a containership into which a shipping container fits exactly.

On a square-rigged ship, the ropes which hang below a yard upon which the topmen stand while aloft furling or reefing a sail. They were supported by ropes from the yard known as "stirrups".

Running ashore (hitting the bot-tom).

The slowest speed at which a vessel steers.