A distant port quarter view of an RAF Rescue Westland Wessex HAR.2 helicopter in flight over the Thames Estuary during a barge match.

A distant port quarter view of an RAF Rescue Westland Wessex HAR.2 helicopter in flight over the Thames Estuary during a barge match. Four spritsail barges are seen from off their port quarter and they are, from left to right, Mirosa (1892), May (1891), Vigilant (1904) and Ironsides (1900). A small yacht with the sail number 2003 is close to the Ironsides. Negatives numbers PM2359/2 to PM2364/37 were taken on the same day.