A fabric, usually synthetic, used to make sails.

To remove or disassemble gear after it is used.

A watch tackle (small, handy block and tackle for general use).

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.

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

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

The degree to which all the forces on a boat are symmetrical so the vessel sails with just a slight weather helm.

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.

To leave a ship without authority (deserting).

To windward, in the direction of the eye of the wind; toward the wind; in the direction from which the wind is coming

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

An absolute temperature scale. The kelvin unit of thermodynamic temperature, is the fraction 1/273,16 of the thermodynamic temperature of the triple point of water. The triple point of water is the equilibrium temperature (0,01

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

A boat is double banked, when two oars, one opposite the other, are pulled by men seated on the same thwart.

Navigable channel.

A tiller or a wheel generally installed on the bridge or wheelhouse of a ship to turn the rudder during manoeuvering and navigation. It is in fact the steering wheel of the ship.

Said of an object that is secured to another; attached, fixed, secured.

Intimate mixture of oil and water, generally of a milky or cloudy appearance. Emulsions may be of two types: oil-in water (where water is the continuous phase) and water-in-oil (where water is the discontinuous phase).

Maintains and monitors radio, sends and receives messages. Often maintains electronic navigation. Latest replaced with certified GO (Deck officer)

A small portable compass.