Uploaded June 2026 | Updated September 2026, 2 weeks ago
Drone footage of Sandringham Yacht Club and the J7 Submarine in Sandringham, Victoria, Australia. Filmed 22 June 2026.
Towards the end of 1914, early in World War I, disturbing rumours began to circulate that the newest German submarines were capable of a much higher surface speed than British boats, one report giving their speed at about 22 knots. The immediate result of this concern was the development of the J Class, which were unique with their three shafts. Originally eight boats were planned but this was reduced to six and then increased to seven. As a result of these changes the boats originally intended to be J7 and J8 were renumbered in April 1915 as J3 and J4 respectively.
J7's submerged displacement of 1760 tons was 60 tons less than that of her sister boats. Her conning tower was located further aft and the gun was mounted in a lower position.
Following the conclusion of hostilities in World War I, the Admiralty in 1918 presented the six remaining boats of the J Class to the Australian Government - J6 had been sunk in error in 1918 by a British ship. All the submarines commissioned into the Royal Australian Navy at Portsmouth on 25 March 1919, as tenders to the submarine depot ship HMAS Platypus, J7 being the senior boat, under the command of Lieutenant Commander Oswald E Hallifax DSO, RN.
On 1 November 1929 J7 was sold to Morris and Watt Pty Ltd of South Melbourne. She was towed from Flinders Naval Depot, Crib Point, where she had served as a reserve source of electric power, on 4 December 1929. She was dismantled and the hull sunk in 1930 as a breakwater at the Sandringham Yacht Club, Sandringham, Port Phillip Bay, where it remains.
visualjourneydrone@gmail.com
Drone footage of Sandringham Yacht Club and the J7 Submarine in Sandringham, Victoria, Australia. Filmed 22 June 2026.
Towards the end of 1914, early in World War I, disturbing rumours began to circulate that the newest German submarines were capable of a much higher surface speed than British boats, one report giving their speed at about 22 knots. The immediate result of this concern was the development of the J Class, which were unique with their three shafts. Originally eight boats were planned but this was reduced to six and then increased to seven. As a result of these changes the boats originally intended to be J7 and J8 were renumbered in April 1915 as J3 and J4 respectively.
J7's submerged displacement of 1760 tons was 60 tons less than that of her sister boats. Her conning tower was located further aft and the gun was mounted in a lower position.
Following the conclusion of hostilities in World War I, the Admiralty in 1918 presented the six remaining boats of the J Class to the Australian Government - J6 had been sunk in error in 1918 by a British ship. All the submarines commissioned into the Royal Australian Navy at Portsmouth on 25 March 1919, as tenders to the submarine depot ship HMAS Platypus, J7 being the senior boat, under the command of Lieutenant Commander Oswald E Hallifax DSO, RN.
On 1 November 1929 J7 was sold to Morris and Watt Pty Ltd of South Melbourne. She was towed from Flinders Naval Depot, Crib Point, where she had served as a reserve source of electric power, on 4 December 1929. She was dismantled and the hull sunk in 1930 as a breakwater at the Sandringham Yacht Club, Sandringham, Port Phillip Bay, where it remains.
visualjourneydrone@gmail.com
