Said of a vessel when stopped and lying near the wind in heavy weather. See Heave To

Said of an object that is secured to another; attached, fixed, secured.

The average level of the oceans, used when finding water depths or land elevations.

Indirect heat exchanger designed to transfer heat from combustion gas to the air stream added to the combustion zone.

A canvas cover secured over a funnel when not in use. Sailor's headwear, woolen type, capable of covering the ears in cold weather.

An abbreviation of forecastle.

Wind that is deflected from it's normal course by the sails

To let out a line or sail slowly; to slacken or relieve tension on a line; to take pressure off.

A rope spliced into the end of a block and used for making it fast to rigging or spars. Such a block is called a tail-block.

Said of a lighthouse not tended.

A fabric bag through which a gas stream is passed for the removal of particulate matter.

Is used in psychrometry and is the temperature recorded by a thermometer whose bulb has been covered with a wetted wick and whirled on a sling psychrometer. Taken with the dry bulb, it permits determination of relative humidity of the atmosphere.

The degree to which all the forces on a boat are symmetrical so the vessel sails with just a slight weather helm.

Is the ratio of the computed isentropic temperature rise to the measured total temperature rise during compression.

To windward, in the direction of the eye of the wind; toward the wind; in the direction from which the wind is coming

When all the sails are shaking.

Specially designed for the transport of condensed (liquefied) gases. The most important gases are: ammonia, ethylene, LNG (Liquefied Natural Gas), which consists mainly of methane, and is cooled to a temperature of minus 163 degrees Celcius, and LPG (Liqu ...

A depth measuring device.

A sailing ship with three to five masts, all of them square-rigged except the after mast, which is fore-and-aft rigged.

Bulk Carrier or Motorcar Carrier