To watch a vessel at anchor at the turn of tides, and cast her by the helm, and some sail if necessary, so as to keep turns out of her cables.

When the water has large or breaking waves in stormy conditions.

Navigable channel.

A boat that has rolled so that she is lying on her side or even rolled completely over (can be caused by a sudden gust or squall). A boat with appropriate ballast should right herself after being knocked down.

When all the sails are shaking.

Black diamond, ball, and cone shapes hoisted on vessels during the day to indicate restricted movement, ability, or type. For example three balls means aground.

A hand held pneumatic tool. Designed for light demolition work, digging, making holes etc.

An absolute temperature scale. ((

The course of a vessel after magnetic variation has been considered, but without compensation for magnetic deviation.

A document prepared by the captain of a vessel on arriving at port; shows conditions encountered during voyage, generally for the purpose of relieving ship owner of any loss to cargo and shifting responsibility for reimbursement to the insurance company.

The International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978.

Navigation and Inspection Circular (US Coast Guard)

United Nations EDI for Administration, Commerce and Transport. EDI Standards are developed and supported by the UN for electronic message (data) interchange on an international level.

This is a factor expressing deviation of a gas from perfect gas laws.

To remove or disassemble gear after it is used.

To stand at the mast and pull down on a halyard as another crewmate winches it in.

A rope net to catch the jib when it is lowered.

Sea water used for ballast, let into the double bottom, or into a water-ballast tank, or trimming tanks.

(1) A body of salt water. A very large body of fresh water. (2) The condition of the water around a boat. Heavy seas for example.

To untie.