| Built By: | Portsmouth Dockyard |
| Build Group: | T 3 |
| Fate: | Scrapped in March 1970 at Cairn Ryan. |
This happened onboard the HMS Token tied up to the jetty at HMS Dolphin Submarine Base, we were day running with a destroyer who was training some
| Length overall | 273 ft 6 inch |
| Beam | 26 ft 6 inch |
| Depth | 14 ft 3 inch |
| Displacement | 1422 tons (surface) |
| 1571 tons (submerged) | |
| Diving Depth | (i) 300 ft |
| Speed | Surface 15.25 knots (design) |
| Surface 15.25 knots (service) | |
| Submerged 9 knots (design) | |
| Submerged 8.75 knots (service) | |
| No. of shafts | 2 |
| Endurance | Surface: 7500 miles at 15.25 knots (design) |
| (ii) Surface: 8000 miles at 10 knots (service) | |
| Submerged: 80 miles at 4 knots (design) | |
| Submerged: 80 miles at 4 knots (service) | |
| Armament | 8 x 21 inch bow tubes (2 external) |
| 2 x 21 inch amidship tubes | |
| (17 torpedoes carried) | |
| 1 x 4 inch gun | |
| 1 x 20mm Oerlikon cannon | |
| 3 x 0.303 inch machine-guns | |
| Complement | (peacetime) 5 Officers and 51 Ratings |
| (wartime) 6 Officers and 56 Ratings | |
| Notes | (i) This was increased to 350 feet in the all-welded boats. |
| (ii) T Class submarines serving in the Far East were modified to carry extra fuel, which increased endurance to 11 000 miles at 10 knots. |
| Class: | 1930 - 1946: Grampus Class |
| Built By: | Vickers (Barrow) |
| Build Group: | G2 |
| Fate: | |
| Possibly sunk off Penang by Japanese A/S aircraft on or about 11th January 1945. On 3rd January 1945 the Submarine left Trincomalee in Ceylon (now Sri Lanka) for her 23rd War Patrol (4th in the Far East) with orders to lay a minefield off Penang. On 9th Jan 1945, Lt. Cdr. H B Turner, DSC is understood to have reported by signal that he had successfully laid her mines off Penang. On 13th January 1945, HMS Stygian was sent a signal informing her that Porpoise was in trouble 17 miles northwest of Pulo Perak). This information came from an Ultra decrypt (now in the National Archives in London) reporting that on 11th January a Nakajima B6N2 bomber had attacked a Submarine, dropping two 60kg bombs. Further bombing attacks we made later but there was no further contact. Japanese records show that a submarine was spotted and bombed by aircraft in the vicinity of Penang. Although not destroyed in this attack, the submarine was wounded and leaking oil that left a trail for the Japanese anti-submarine forces to follow as they closed in for the kill. HMS Porpoise was later declared overdue and then as lost with all hands. | |
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| Length overall | 273 ft 6 inch |
| Beam | 26 ft 6 inch |
| Depth | 14 ft 3 inch |
| Displacement | 1422 tons (surface) |
| 1571 tons (submerged) | |
| Diving Depth | (i) 300 ft |
| Speed | Surface 15.25 knots (design) |
| Surface 15.25 knots (service) | |
| Submerged 9 knots (design) | |
| Submerged 8.75 knots (service) | |
| No. of shafts | 2 |
| Endurance | Surface: 7500 miles at 15.25 knots (design) |
| (ii) Surface: 8000 miles at 10 knots (service) | |
| Submerged: 80 miles at 4 knots (design) | |
| Submerged: 80 miles at 4 knots (service) | |
| Armament | 8 x 21 inch bow tubes (2 external) |
| 2 x 21 inch amidship tubes | |
| (17 torpedoes carried) | |
| 1 x 4 inch gun | |
| 1 x 20mm Oerlikon cannon | |
| 3 x 0.303 inch machine-guns | |
| Complement | (peacetime) 5 Officers and 51 Ratings |
| (wartime) 6 Officers and 56 Ratings | |
| Notes | (i) This was increased to 350 feet in the all-welded boats. |
| (ii) T Class submarines serving in the Far East were modified to carry extra fuel, which increased endurance to 11 000 miles at 10 knots. |
| Class: | 1930 - 1946: Grampus Class |
| Built By: | Vickers (Barrow) |
| Build Group: | G2 |
| Fate: | |
| Possibly sunk off Penang by Japanese A/S aircraft on or about 11th January 1945. On 3rd January 1945 the Submarine left Trincomalee in Ceylon (now Sri Lanka) for her 23rd War Patrol (4th in the Far East) with orders to lay a minefield off Penang. On 9th Jan 1945, Lt. Cdr. H B Turner, DSC is understood to have reported by signal that he had successfully laid her mines off Penang. On 13th January 1945, HMS Stygian was sent a signal informing her that Porpoise was in trouble 17 miles northwest of Pulo Perak). This information came from an Ultra decrypt (now in the National Archives in London) reporting that on 11th January a Nakajima B6N2 bomber had attacked a Submarine, dropping two 60kg bombs. Further bombing attacks we made later but there was no further contact. Japanese records show that a submarine was spotted and bombed by aircraft in the vicinity of Penang. Although not destroyed in this attack, the submarine was wounded and leaking oil that left a trail for the Japanese anti-submarine forces to follow as they closed in for the kill. HMS Porpoise was later declared overdue and then as lost with all hands. | |
20 pages added or updated in the last Array month
Please help to maintain this site by reporting any Errors, Broken Links, Information or Site Issues on this page using this button
If you find this site useful, please consider supporting my work with a small Donation.
Please Note: Donations made using this option go directly to the site owner and not to the Submariners Association.
Thankyou for your support.
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