A boat that is letting herself be subjected to prevailing conditions without the use of sails or other devices. Lying ahull is usually not preferred to other actions because a boat may tend to lie with her beam to the waves and the wind parallel to the wa ...

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

A gun used in the life-saving services to throw a life line to a ship in distress or from ship to shore and used when a boat cannot be launched.

[meaning]

Middlewest Motor Freight Bureau.

Volume flow rate measured in cubic meters per minute (or per hour)

is the ratio of the actual velocity at a given point to the velocity of sound in the same gas at the conditions existing at this point. These are known as local conditions.

The bearing of an object after magnetic variation has been considered, but without compensation for magnetic deviation.

The course of a vessel after magnetic variation has been considered, but without compensation for magnetic deviation.

Compass error. The difference between the reading of a compass and the actual magnetic course or bearing due to errors in the compass reading. These errors can be caused by metals, magnetic fields and electrical fields near the compass. The act of checkin ...

The direction to which a compass points. Magnetic north differs from true north because the magnetic fields of the planet are not exactly in line with the north and south poles. Observed differences between magnetic and true north is known as magnetic var ...

The difference between magnetic north and true north, measured as an angle. Magnetic variation is different in different geographic locations, so the nearest compass rose to each location on a chart must be used.

First voyage of a ship.

The main continuous deck of a ship running from fore to aft; the principle deck; the deck from which the freeboard is determined.

The tallest mast; the forward mast of a yawl or ketch; the mast furthest aft on a schooner

A topsail on the main mast.

The principal sail that is set on the main mast.

The line that controls the angle of the mainsail in its relation to the wind.

Hoisting the ensign at 8 a.m. and down at sunset.

To attach a line to something so that it will not move.