Towards the center line of a ship (towards the center).

The difference between magnetic north and true north, measured as an angle. Magnetic variation is different in different geographic locations, so the nearest compass rose to each location on a chart must be used.

Electronic Trading Stasndard Format

Areas of the ocean lying between the mostly westerly winds of the higher latitudes, and the trade winds. These areas usually have prolonged calms, and in the older days of sail it could take quite a while to clear out of this area, by which time the seame ...

The one who steers the boat.

Caulker's name for the seam in the upper deck planking next to a ship's waterways. There was very little space to get at this seam, making it a difficult and awkward job. This is the origin of the expression "Between the devil and the deep blue sea, since ...

A navigational instrument which provides a bearing to a radio beacon.

A hard, brittle, nonmagnetic intermediate phase with a tetragonal crystal structure, containing 30 atoms per unit cell, space group P42mnm, occurring in many binary and ternary alloys of the transition elements. The composition of this phase in the variou ...

A surface-active agent; usually an organic compound whose moleculei contain a hydrophilic group at one end and a lipophilic group at the other.

A boat which uses the wind as its primary means of propulsion.

A point of sail where the boat is sailing at a right angle to the wind (wind coming from abeam). A beam reach is usually the fastest point of sail. A beam reach is a point of sail between a broad reach and a close reach.

A schedule of all ports to be visited on a ship's cruise, with dates of arrival and departure and the local agents' names and addresses

The opening up the back (aft) edge of the mast in which the mainsail luff rope slides when it is hoisted. Some masts have an external sail track.

The headstay on which jibs are hoisted

An angle or channel from deck beam to shell frame taking the place of a bracket.

A term applied to warm-air heating systems that deliver heated air to rooms by means of registers or baseboards located along exterior walls.

Breaking away of a mass of ice from a glacier or iceberg.

See 'scrip.

The surface of the water.