On square-rigged ships, the lines which are lead from the masthead to the ends of the yards to support them.

Cargo landed in excess of the quantity on manifest.

Cargo more than eight feet high which thus cannot fit into a standard container.

A call requesting direction in answer to the report of a lookout that an object has been sighted.

Annual publication of astronomical data for the use of navigators.

The ability of a boat to keep from being moved sideways by the wind. Keels, daggerboards, centerboards, and leeboards are all used to improve a boat's lateral resistance.

Pressure dew point temperature (

Clauses introduced by charterers based on shortage of delivered cargo because of increased oil prices.

Sixteenth-century term for a sea distance at which high land could be observed from a ship. Varied between 14 and 22 miles according to average atmospheric conditions in a given area.

An opening such as a hole or vent. An opening through which air can pass, or a restricted opening placed in a pipe line to provide a means of controlling or measuring flow.

A device for furnishing fresh air to compartments below deck or exhausting foul air. Construction designed to lead air below decks. May have a cowl, which can be angled into or away from the wind; and may be constructed with baffles, so that water is not ...

A single turn of rope when a rope is coiled down.

A naval rank next below that of lieutenant-commander, which is next below that of captain (the equivalent of commander).

Also VMG. Actual boat speed after adjusting for such factors as current and leeway.

Cargo which has been booked but does not arrive in time to be loaded before the vessel sails. See also "Windy Booking."

To leave a ship without authority (deserting).

The process of plotting a theoretical position or future position based on advancing from a known position using speed, time, and course, without aid of objects on land, of sights, etc. Term comes from deduced reckoning, abbreviated first to "ded reckonin ...

A platform with or without sides, on which a number of packages or pieces may be loaded to facilitate handling by a lift truck.

A condition where the particles (dust) becomes embedded in the fabric filter over time and are not removed by the bag cleaning process.