A schooner with a square rigged sail on the forward mast.

Heavy-duty wire used to lower heavy instruments overboard from the trawl winch.

Are lines that supply equipment from sub headers.

A pneumatic percussive drill designed as a boring tool.

The rotating element of a machine and, in the case of a compressor, is composed of the impeller (impellers) and shaft, and may include shaft sleeves and a thrust balancing device.

A support wire running from the upper part of the mast to the bow of the boat designed to pull the mast forward. A forestay that attaches slightly below the top of the mast can be used to help control the bend of the mast. The most forward stay on the boa ...

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

(1) Said of seas that break over a vessel or over a sea wall. (2) A whale breaches when it leaps out of the water.

The large enclosed floor where the lines of a vessel are laid out and the molds or templates made.

The passing of several turns of line across the jaw of a hook to prevent something on the hook, such as an eye or a line, from jumping clear.

Charge made for local hauling by dray or truck. Same as Cartage.

Is the reversal of flow within a dynamic compressor that takes place when the capacity being handled is reduced to a point where insufficient pressure is being generated to maintain flow. Also known as surge.

An order to hold a vessel on the course she is heading.

Depending upon as a condition

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

SOnar Navigation and Ranging - A device which emits pulses of high frequency sound which are reflected by any solid object they encounter. The time from the emission of the pulse and the arrival of its returning echo is measured, giving a range to the obj ...

Practices and measures that increase energy efficiency.

The moisture content of air.

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

A bunk which runs under the cockpit