A white navigation light carried by vessels under way at night to indicate their presence and give an indication of their course.

A device designed to enable accumulated liquids to be held for draining in a compressed air system.

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

To sail as close as possible to the wind. Some boats can point better than others, sailing closer to the wind.

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

On a square-rigged ship, the act of lowering a spar or yard to the deck.

The latest time cargo may be delivered to a terminal for loading to a scheduled train or ship.

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.

The soft sandstone block sailors use to scrub the deck, so-called, because seamen were on their knees to use it.

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.

The person or company who is usually the supplier or owner of commodities shipped. Also called Consignor.

Temporarily placed longitudinal bulkheads used to prevent bulk cargo from shifting.

A name usually given to a State body having control or regulation of public utilities.

(1) A knot used to secure a line to another object such as a ring or cylindrical object or to another line; (2) Common term for an enlistment.

Is a process taking place under constant temperature. To compress the gas from state 1 to state 2, heat must be removed to keep the temperature constant. The pressure change is reciprocal to the change in specific volume.

A pointed spar driven into the bottom and projecting above the water; when driven at the corners of a dock, they are termed fender piles.

A device actuated by inlet static pressure and designed to open during an emergency or abnormal condition to prevent a rise of internal pressure in excess of a specified value.

Space booked by shipper or charterer on a vessel but not used

To cause a break in the hull which may sink the vessel; the vessel is then called stove.

A dynamic compressor. A machine in which air or gas is compressed by the mechanical action of rotating vanes or impellers imparting velocity and pressure to the air or gas. In a centrifugal compressor, flow is in a radial direction. Air enters the compres ...