The most common type of sail used today, a triangle-shaped mainsail defined by the mast and one horizontal boom perpendicular to the mast.

Maritime Defense Zones

The cost of producing one additional unit of a product.

In folklore, a name for wind.

International Conference on technologies for Marine Environment preservation.

A place where boats can find fuel, water and other services. Marinas also contain slips where boats can stay for a period of time.

A mercury barometer designed for use aboard ship. The instrument is of the fixed-cistern type (see Kew barometer). The mercury tube is constructed with a wide bore for its upper portion and with a capillary bore for its lower portion. This is done to incr ...

Broadly, insurance covering loss or damage of goods at sea. Marine insurance typically compensates the owner of merchandise for losses sustained from fire, shipwreck, etc., but excludes losses that can be recovered from the carrier.

An insurance policy arranged by either the buyer or the seller to insure goods against damage in transit. The appropriate Incoterm will determine the responsibility of the buyer or seller to arrange the insurance.

A rainbow seen in the spray of the ocean. It is optically the same phenomenon as the ordinary rainbow.

See sea-water thermometer, reversing thermometer.

In general, a person employed in a sea-going vessel. In some cases, applied to a seaman who works on deck.

Maritime Systems Technology program (U.S.)

Business pertaining to commerce or navigation transacted upon the sea or in seaports in such matters as the court of admiralty has jurisdiction.

– Governmental organizations, such as the United States Coast Guard (USCG), UK Marine Safety Agency (UK MSA), Norwegian Maritime Directorate (NMD), etc., that provide maritime services such as the issuance of certificates and classification of ships for ...

An object used as a reference point while navigating.

Letters, numbers, and other symbols placed on cargo packages to facilitate identification. Also known as marks.

To wrap a small line around another.

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

Used for lashing down sails, awnings, etc., a series of round turns where the end is passed over the standing part and under the bight and pulled taut on each turn.