A document required and issued by some national governments authorizing the importation of goods.

Components subordinate to the compressor.

A halyard used to raise the spinnaker.

An object that might not allow safe operation. A group of rocks just under the water or a submerged wreck could be a navigational hazard.

To pass a turn around a belaying pin or cleat.

The depth of the boat below the waterline; the amount of vertical distance from a boats water line to the bottom of it's keel.(2) The depth of water necessary to float a vessel(3) The belly or chord depth of the sail, its fullness

The officer on board responsible for the navigation of the ship.

Indicates the jib or staysail being boomed out on the opposite side of the mainsail in a following wind, giving a large amount of sail area presented to the wind. see Wing and Wing

To sail closer to the wind than another boat on the same tack.

40 cubic feet.

A unit of work, being the work done in one hour at the rate of 1,000 watts.

A smooth hard wood grown in the West Indies which had many maritime uses, such as deadeyes and the sheaves of blocks. Its hardness stood up well to wear, and its smoothness allowed lines to render through easily.

Inlet and outlet connections are located at the same level on opposite sides of the filter or other device installed on the pipeline.

An arrangement whereby a steamship company, under rules and regulations established in the freight tariff of a given trade, accepts small packages at rates below the minimum bill of lading, and issues a parcel receipt instead of a bill of lading.

The point at which the Sun , traveling in the Ecliptic , crosses the Equinoctial when going from South to North declination.

Vessels operating on fixed itineraries or regular schedules and established rates available to all shippers. The freight rates which are charged are based on the shipping company's tariff or if the company is a member of a liner conference, the tariff of ...

A drum of a windlass for heaving in line.

Said of a vessel when unable to maneuver.

An order given to take hold of a rope and pull.

Old and experienced seaman.