Naval Flag Signaller

Huddled against the North Sea cold in his hooded duffel coat and sea boots, he is a vital link between ships at sea as he passes messages from one ship to another using signals generated by hand-held yellow-and-red semaphore flags. Each letter of phrase of the message is formed by the signaller holding flags, and his arms, in specific arrangements.

Tradition dies hard in the navies of Britain and its Empire so, despite the availability of wireless technology, the RN still practised passing messages via semaphore throughout the Great War.