ship's field error

ship's field error

[′ships ′fēld ‚er·ər]
(navigation)
That error in radio direction finder bearings due to the ship's directional antenna being located where the main component of the ship's field is not parallel to the ship's center line.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.