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Victorian Heritage Database
J-7 SUBMARINE
Location
Port Phillip Bay, Picnic Point, Hampton, Sandringham Yacht Club
VHR Number
S384
Date lost
06/08/1930
Year of construction
1916
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Statement of Significance
The J-7 submarine at Sandringham is a unique visible feature of the marina, and is historically significant as one of the Royal Australian Navy s earliest submarines, predated only by the AE-1 and AE-2.
| Physical Description |
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| Construction Material |
Steel |
| Rig |
Submarine |
| Hull Details |
J-7 differed from the other J-class submarines by the repositioning of the control room aft, between the main engine rooms. The conning tower moved with it. 3" HA gun mounted of the forward end of the superstructure. Modifications included the addition of |
| Propulsion |
Motor |
| Engine Specification |
Vickers; Mather & Platt |
| Engine Builder |
3x12 cy Vickers solid injection direct reversing 4 cycle BHP diesel engines of 14-1/2" bore and 14" stroke, 380 rpm; for submerged running 2x Mather & Platt 1400 HP electric motors (MAAV notes) |
| Length / Breadth / Depth |
274.8 Feet / 23.5 Feet / 14.0 Feet |
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History |
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| Built Date |
1916 |
| Built Port / Country |
Devonport / United Kingdom |
| Former Details of Registration |
British Royal Navy; Royal Australian Navy |
| Details |
The present Sandringham pier straddles the semi-submerged sub. The J-7 is in similar condition to the J-3 at Swan Island. Armament: one 3" Dp/Ha gun and one 2-pounder portable gun, later changed to a 4" quick firing gun mounted on a platform built before the bridge. Seven J-class submarines built for British Navy. After World War I six subs offered to Australia as a gift. (One had been lost during War.) They saw little service with Australian Navy - an embarrassment from the beginning, being in poor condition. Decision taken to scrap five of the subs. on 9 Nov. 1923, but decision on J-7 taken on 16 January 1924. Its engines were in use at Flinders Naval Depot to augment power plant. It was sold for breaking up in October 1929 but was sunk as a breakwater at Sandringham Yacht Club.
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Uses of Vessel |
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| Primary Use |
Defence
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| Secondary Use |
Naval
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Voyage Details |
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| Date Lost |
06/08/1930 |
| Owner |
Morris & Watt Pty Ltd, South Melbourne |
| Cause of Loss |
Scuttled at Hampton as a breakwater
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Further Details |
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| Number of Passengers |
0 |
| Number of Crew Members |
0 |
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