On the beam, a relative bearing at right angles to the ship's keel.



Related Terms

DOUBLING THE ANGLE ON THE BOW

A method of obtaining a running fix by measuring the distance a vessel travels on a steady course while the relative bearing (right or left) of a fixed object doubles. The distance from the object at the time of the second bearing is equal to the run between bearings, neglecting drift.

TO DRAW

  1. To be immersed to a specified draft. 2. To change relative bearing forward or aft, or to port or starboard.

TARGET ANGLE

The relative bearing of own ship from a target vessel, measured clockwise through 360°.

DOUBLE THE ANGLE ON THE BOW

A navigational plot for obtaining distance off from a charted feature. A relative bearing on the object is taken and a steady course maintained; at the time when a second relative bearing is exactly double that of the first bearing, the distance off will be the same as the distance sailed between bearings.

RELATIVE BEARING

A bearing relative to the direction of the ship: the clockwise angle between the ship's direction and an object.

ON THE BEAM

Bearing approximately 090° relative (on the starboard beam) or 270° relative (on the port beam). The expression is often used loosely for BROAD ON THE BEAM, or bearing exactly 090° or 270° relative. Also called ABEAM.

GRID BEARING

Bearing relative to grid north

ON THE BOW

Bearing approximately 045° relative (on the starboard bow) or 315° relative (on the port bow). The expression is often used loosely for BROAD ON THE BOW, or bearing exactly 045° or 315° relative.

COMPASS BEARING

Bearing relative to compass north.

DEADRISE

The design angle of the hull at the keel relative to horizontal when viewing the cross section, or the distance of rise from the keel to a defined point on the hull.

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