Royal Naval College, Osborne

The Royal Naval College, Osborne, was a training college for Royal Navy officer cadets on the Osborne House estate, Isle of Wight, established in 1903 and closed in 1921. Boys were admitted at about the age of thirteen to follow a course lasting for six academic terms before proceeding to the Royal Naval College, Dartmouth.

Source: Wikipedia — Royal Naval College, Osborne (CC BY-SA 4.0)