The distance a boat can move around its anchor. Swinging room is important because if other boats or objects are within a boat's swinging circle they may collide.

Change direction so as to point closer to where the wind is coming from. The opposite of falling off.

An entry that allows foreign merchandise arriving at one port to be exported from the same port without the payment of duty.

Measuring point for compressor acceptance test. Distribution pressure (headers).

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

A publication setting forth the charges, rates and rules of transportation companies.

A double block where the two sheaves lie in a plane one below the other, rather than alongside each other.

Dangerously steep and breaking seas due to opposing currents and wind in a shallow area.

A deck exposed to the wind and sea.

The lines that lead from the clew of the jib to the cockpit and are used to control the jib.

Refers to the direction in which a line goes.

Customs form permitting in bond cargo to be moved from one location to another under Customs control, within the same Customs district. Usually in motor carrier's possession while draying cargo.

A boat that is comfortable in rough weather.

A sailboat with two masts. Generally, the shorter mizzen mast is aft of the main mast, but forward of the rudder post, while a similar vessel, the yawl, has the mizzen mast aft of the rudder post. The mizzen mast of a ketch is larger than that of a yawl.

Alphabet used by the Navy when making sure that a letter is understood; i.e. "BRAVO OSCAR ALPHA TANGO spells BOAT"

Direction from which the wind is blowing; an unsailable sector between close hauled headings.

A lit navigational aid such as a lighthouse that can be used at night or in poor visibility.

Mesh is the number of openings in a square inch of screen or sieve. It is equal to the square of the number of strands of metal or plastic screening per lineal inch. Standard US mesh screen # 16 equates to a 1.19 millimeter particle diameter, mesh size #4 ...

A vessel designed for the transport of people or goods from one place to another on a regular schedule.

A type of schooner without a bowsprit.