Tanks carried in various parts of a ship for water ballast, for stability and to make the ship seaworthy.

Part of a ship/s side projecting upwards along the line of the weather deck or uppermost deck.

Various statements that the U.S. government requires to be displayed on export shipments. The statements specify the authorized destinations.

A device for separating solids or suspended particles in the air before they enter the air intake of the compressor and reduce intake noise as on reciprocating compressors through a silencing chamber in the filter housing.

Another name for the bo'sun's whistle.

A fix taken by taking bearings of a single object over a period of time. By using the vessel's known course and speed, the location of the vessel can be found.

Said of anchor when it lifts clear of the bottom.

Leaning out over the side of the boat to to counteract heel and balance it.

Abbreviation for "Consumption Entry." The process of declaring the importation of foreignmade goods for use in the United States.

Abbreviation for "Gross Vehicle Weight." The combined total weight of a vehicle and its container, inclusive of prime mover.

The marrying of two or more portions of one shipment that originate at different locations, moving under one bill of lading, from one shipper to one consignee. Authority for this service must be granted by tariff publication. See Bill of Lading.

A barge which loads material dumped into it by a dredger and discharges the cargo through the bottom.

A small buoy that is used to mark the position of an anchor. It is attached to the base or crown of an anchor and can be used to recover the anchor if it has to be cast adrift, or to trip it if it becomes wedged.

(1) A small wooden cask in which grog was carried. (2) A type of marine steam reciprocating engine where two engines were used together on the same propeller shaft.

The space between the two sides of the shell of a block in which the sheave is fitted.

A line attached to the crown of an anchor and used to help free it in the event it becomes fouled.

Type of wrench used to tighten or loosen fire hose fittings.

A draft payable on demand upon presentation.

A navigational aid used in the United States and Canada to mark a channel. Green triangular daymarks should be kept on the left when returning from a larger to smaller body of water.