dead astern

dead astern

[¦ded ə′stərn]
(navigation)
In marine navigation, a bearing 180° relative; if the bearing is approximate, the term astern should be used. Also known as right astern.
References in classic literature ?
Captain Davenport was murmuring as his ship forged clear; but he broke off abruptly to gaze at the shoal which should have been dead astern, but which was already on the PYRENEES' weather-quarter and working up rapidly to windward.
Mounted on a flatbed truck, two of the cameras were aimed laterally to film the ecstatic, worshipful soldiers, and one camera was pointed dead astern to zoom in and out on the general.
It must show dead astern through an arc of 135 degrees.