A device to fire a life line to a ship in distress.



Related Terms

WATERLINE

The line where the hull of a ship meets the water's surface.

OCEANOGRAPHIC DREDGE

A device used aboard ship to bring up large samples of deposits and sediments from the ocean bottom.

BILL OF LADING

A document by which the Master of a ship acknowledges having received in good order and condition (or the reverse) certain specified goods consigned to him by some particular shipper, and binds himself to deliver them in similar condition, unless the perils of the sea, fire or enemies prevent him, to the consignees of the shippers at the point of destination on their paying him the stipulated freight. A bill of lading specifies the name of the master, the port and destination of the ship the goods, the consignee, and the rate of freight.

ANCHOR

A device used to secure a ship to the sea floor

RELATIVE PLOT

A plot of the successive positions of a craft relative to a reference point, which is usually in motion. A line connecting successive relative positions of a maneuvering ship relative to a reference ship is called a RELATIVE MOVEMENT LINE. A relative plot includes relative movement lines and the position of the reference ship.

LOAD WATER LINE

The plan water line when the ship is loaded.

FOURTH RATE

In the British Royal Navy, a fourth rate was, during the first half of the 18th century, a ship of the line mounting from 46 up to 60 guns.

LEADING LINE

On a nautical chart, a straight line, drawn through leading marks. A ship moving along such line will clear certain dangers or remain in the best channel.

PENDULUM LEVEL

A leveling instrument in which the line of sight is automatically kept horizontal by a built-in pendulum device (such as a horizontal arm and a plumb line at right angles to the arm).

CHANNELS

Extension boarding at deck level to increase the width of the hull of a sailing ship for the lower stays land upon, thus providing a wider angle of mast support. The traditional position from which a seaman heaved a hand lead line (to establish depth).

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