Part of interior of the Engine Room at Emery Point, showing the beds for No 4 engine, compressor ...

Part of interior of the Engine Room at Emery Point, showing the beds for No 4 engine, compressor and 2 1/2 horse power engine. Construction of coastal defences at Emery Point was undertaken after it was decided in 1930 to close down the Garrison at Thursday Island. The first men from the Royal Australian Artillery arrived in 1933, followed by a detachment of Royal Australian Engineers, later to be known as the 7th Fortress Company. Five more oil tanks were commissioned at that time. A Naval Depot opened in Darwin in January 1935 with a primary mission of operating as a naval reserve facility. By 1936, four 6 inch coastal guns had been installed - two at Emery Point and two at East Point. Larrakeyah Barracks was built, but by 1937 the garrison numbered only 50.