A pointed metal spike, used to separate strands of rope in splicing.

Error that can be introduced when not reading an instrument, such as a compass, directly from its front, due to the separation of the indicator and the scale being read.

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

40 cubic feet.

Melting and becoming a liquid by absorbing moisture.

An end closure for the filter case or bowl that contains one or more ports.

Publications that describe features of particular sailing areas, such as hazards, anchorages, etc.

Space booked by shipper or charterer on a vessel but not used

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

In blue water beyond the 100-fathom line.

Iron or wood pin fitted into racks, around which lines can be belayed or secured.

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

Used in emergencies, this is a container which allows oil to drip into the sea in heavy weather. An oil slick is produced which prevents waves from breaking over the deck of a boat.

The ability of a filter to remove specified test contaminants under specified test conditions from a specific test fluid, air, gas or liquid. Expressed as a percentage of the quantity of test contaminant introduced into the inlet of the filter test system

Old and experienced seaman.

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

A letter of credit that allows the beneficiary to transfer in whole or in part to another beneficiary any amount which, in aggregate, of such transfers does not exceed the amount of the credit. Used by middlemen.

ACRONYM - National Electrical Code

Strop inserted between two hawsers, and weaker than the hawsers, so that strop, and not hawsers, will part with any excessive strain.

Short pieces of line fastened to the sail at reef points, used for tying a reef to reduce sail area. The reef line will pass through reef cringles, which will become the new tack and clew of the reefed sail.