A floating island of ice. Only one-ninth of the total mass of an iceberg is visible above water level.

Flow of air under specific conditions required at a particular point.

Category of bulk carrier 100.000-180.00DWT so called she is too large to pass Suez and Panama Canals.

Atmospheric pressure as measured by a barometer.

ACRONYM - National Pipe Thread standard. A description of a specific pipe thread

A method of lowering the sail in sections so that it can be reefed quickly.

Measure of alkalinity or acidity in water and water containing fluids. Can be used to determine the corrosion inhibiting characteristic in water based fluids. Typically, pH > 8.0 is required to inhibit corrosion of iron and ferrous alloys in water based f ...

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

A new letter of credit issued to another beneficiary on the strength of a primary credit. The second L/C uses the first L/C as collateral for the bank. Used in a three-party transaction.

A cap for the top of the mast.

The command given to inform the crew that the helm is being turned quickly to leeward, turning the boat windward

The merchant ships on the official registers of any nation.

A wind shift that allows a boat to sail above its mean wind course.

A triangular fore-and-aft sail carried on a stay. A sail that is set on a stay, and not on a yard or a mast. On a cutter this is the sail located between the jib and the main sail

Sailing other than close; hauled or into the wind (wind astern).

Ribbon, yarn, or other lightweight material attached to rigging or sails to indicate wind action or direction. Proper use of the telltales can help sailors improve their sail trim.

An additional keel secured outside the main keel, usually as protection in the event of grounding.

The first plank on the outer hull of a wooden vessel next to the keel. In steel ships, the plating next to the keel, or what is known as strake A.

The drying of compressed gases other than air. Equipment size, choice of materials and other specifications may be decidedly different for drying gases other than air because of the specific properties of the gases. Properties include specific gravity, sp ...

A unit of 1,000 bars of pressure.