Jack of the Royal East Africa Navy, worn by HMEAS 'Mvita' 1956.

The flag is made of wool and synthetic fibre bunting with a cotton hoist, machine sewn and with the design of the badge printed. It has a blue field with a Union Flag in the canton as well as a circular badge surrounded by a cable knotted at the bottom and surmounted by a crown. In the four quarters of the badge are a red rampant lion representing Kenya, a crane for Uganda, a giraffe's head for Tanganyika and a dhow and crown for Zanzibar. Stencilled on the hoist are '1958 4 x 2' and the maker's name. A rope and two Inglefield clips are attached.

The design was in use between 1957 and 1962 when the Royal East African Navy was disbanded. Colonial naval reserves in East Africa were amalgamated into a single organisation during the Second World War known as the East African Naval Force. The name was changed in 1952 at the same time as the design was submitted. It was finally approved in 1957.