In this summertime view, members of Rainbow's crew fire one of the ship's 6-inch guns.

The gun's crew, in their white summer uniforms, perform various duties, including the two sailors at centre who are looking through sights to aim the gun, Rainbow's most powerful weapon. Gun practice like this sought to keep the sailors' performance in line with the standards of Britain's Royal Navy. During its pre-war fisheries patrols and sovereignty activities, Rainbow's heavy guns were less important than the simple presence of the ship itself.

George Metcalf Archival Collection
CWM 19890167-004