A stern view of an unidentified gaff cutter rigged yacht, possibly a former fishing smack, under sail at the turn marker during a race in the Thames Estuary.

A stern view of an unidentified gaff cutter rigged yacht, possibly a former fishing smack, under sail at the turn marker during a race in the Thames Estuary. She is on the port tack and ahead of her, having completed the turn, are a number of other smacks and yachts.