A small channel or opening in a filter medium which allows passage of gas.

Resistance to flow. Defined as the difference in pressure upstream and downstream.

A large body of water taken aboard (ship a sea).

A trailer or semi-trailer with no sides and with the floor of the unit close to the ground.

A bridge that can be raised vertically to allow boats to pass underneath.

Very small wooden pail having one stave prolonged to form a handle. Used as a bailer in a boat.

A compartment on or near the bridge of a ship that contains the steering wheel and other controls, compass, charts, navigating equipment and means of communicating with the engine room and other parts of the ship. Also known as wheelhouse

A single masted cutter built expressly for the prevention of smuggling and the enforcement of customs regulations.

A synthetic rubber frequently used for vessel and liquid filter element gasket.

A port designated by the government of a country for duty-free entry of any non-prohibited goods. Merchandise may be stored, displayed, used for manufacturing, etc., within the zone and re-exported without duties.

Is any gas or gas mixture that contains no water vapor and/or in which all of the constituents are substantially above their respective saturated vapor pressures at the existing temperature.

To ascertain the proper course to be steered to make the desired point or port. Shark's mouth

(0.2+0.02 log10(Vc)) Vc (4d/3D)2, for passenger ships the following formula is added: 1.25 (GT+10000)/10000 (N1+(N2/10)), where Vc is the volume of cargo holds, D is the distance between ship's bottom and the uppermost deck, d is the draught N1 is the num ...

Flat bottomed vessel with a shallow draught.

A rail fastened along the inside of the bulwarks of a vessel and pierced to hold belaying pins

The gauge pressure at which a safety valve visibly and audibly opens or at setting which a relief valve discharges an unbroken stream of liquid.

To double a vessel's mooring lines.

The horsepower calculated from compressor-indicator diagrams. Applied only to displacement type compressors.

A piece of wood fitted in various places to act as a preventative to chafe.

Small horizontal spars extending athwartships from one or more places along the mast. The shrouds cross the end of these "spreaders", enabling the shrouds to better support the mast.