broad on the beam

broad on the beam

[¦brȯd ȯnthə ′bēm]
(navigation)
Bearing 090° (broad on the starboard beam) or 270° relative (broad on the port beam); if the bearings are approximate, the expression “on the beam” or “abeam” is used.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.