An ingenious extemporised bearing plate found on a French trawler. It consists of a water-tight bulkhead electric light fitting (brass) which has been fitted with gimbals, diameter 12.2" (31cm), and balanced so that its glass is horizontal. The flat glass is fitted with a spigot for an alidade and a paper compass card, graduated 0-180 degs through E & W, is stuck to its underside.