| Built By: | Cammell Laird (Mersey) |
| Build Group: | Amphion |
| Fate: | Cancelled |
| Length overall | 280 ft 6in |
| Beam | 22 ft |
| Depth | 16ft |
| Displacement | 1385 tons (surface) |
| 1620 tons (submerged) | |
| Diving Depth | 350 ft |
| Speed | Surface 18.5 knots (design) |
| Submarged 8 knots (design) | |
| No. of shafts | 2 |
| Armament | 6 x 21 inch bow tubes (2 external) |
| 4 x 21 inch stern tubes (2 external) | |
| 20 torpedoes carried | |
| 1 x 4 inch gun | |
| 1 x 20mm Qerlikon cannon | |
| 3 x 0.303in machine-guns | |
| Endurance | Surface: 10 500 miles at 11 knots (design) |
| Submerged: 16 miles at 8 knots or 90 miles at 3 knots | |
| Complement | 6 Officers and 55 Ratings. |
| 6 Officers and 58 Ratings after modernisation. |
| Class: | 1935 - 1970: Improved S Class |
| Built By: | Scotts (Clyde) |
| Build Group: | S3 |
During the bleak, heartbreaking days of early 1942, when beleaguered Malta was reeling under bombardment and blockade and Rommel was making his last desperate thrust towards Egypt, only one British submarine was operating in the western Mediterranean - the tiny, 600-ton Unbroken.
In twelve months in the Med, Unbroken sank over 30,000 tons of enemy shipping, took part in four secret operations, three successful gun actions, and survived a total of over 400 depth charges, as well as innumerable air and surface attacks.
This account of the 26-year-old Alastair Mars' command of this outstandingly successful submarine embraces her construction, sea trials and voyage to Gibraltar preparatory to her vital role in the Mediterranean. Once there, she was responsible for the destruction of two Italian cruisers and played a pivotal part in Operation Pedestal, the convoy that saved Malta from surrender.
Alastair Mars writes simply and without pretension, and his words evoke the claustrophobic yet heroic world of the submariner.
19 pages added or updated in the last 2 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.
| Length overall | 280 ft 6in |
| Beam | 22 ft |
| Depth | 16ft |
| Displacement | 1385 tons (surface) |
| 1620 tons (submerged) | |
| Diving Depth | 350 ft |
| Speed | Surface 18.5 knots (design) |
| Submarged 8 knots (design) | |
| No. of shafts | 2 |
| Armament | 6 x 21 inch bow tubes (2 external) |
| 4 x 21 inch stern tubes (2 external) | |
| 20 torpedoes carried | |
| 1 x 4 inch gun | |
| 1 x 20mm Qerlikon cannon | |
| 3 x 0.303in machine-guns | |
| Endurance | Surface: 10 500 miles at 11 knots (design) |
| Submerged: 16 miles at 8 knots or 90 miles at 3 knots | |
| Complement | 6 Officers and 55 Ratings. |
| 6 Officers and 58 Ratings after modernisation. |
| Class: | 1935 - 1970: Improved S Class |
| Built By: | Scotts (Clyde) |
| Build Group: | S3 |
During the bleak, heartbreaking days of early 1942, when beleaguered Malta was reeling under bombardment and blockade and Rommel was making his last desperate thrust towards Egypt, only one British submarine was operating in the western Mediterranean - the tiny, 600-ton Unbroken.
In twelve months in the Med, Unbroken sank over 30,000 tons of enemy shipping, took part in four secret operations, three successful gun actions, and survived a total of over 400 depth charges, as well as innumerable air and surface attacks.
This account of the 26-year-old Alastair Mars' command of this outstandingly successful submarine embraces her construction, sea trials and voyage to Gibraltar preparatory to her vital role in the Mediterranean. Once there, she was responsible for the destruction of two Italian cruisers and played a pivotal part in Operation Pedestal, the convoy that saved Malta from surrender.
Alastair Mars writes simply and without pretension, and his words evoke the claustrophobic yet heroic world of the submariner.
19 pages added or updated in the last 2 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.

This form is for you to comment on, or add additional information to this page. Any questions will be deleted. If you wish to ask a question contact the Branch or the Webmaster using the Contact Us page or ask your question on our Facebook Page