Use the scroll bar below to move through the timeline and click on the bars for more information on the classes shown, or select a class from the dropdown list below.
Key
Featured Boat
| Untiring (P59) | |
 Untiring in 1944 | |
| Built By: | Vickers (Tyne) |
| Build Group: | U Group 2 |
| Fate: | Used as target and sunk on 25th July 1957 |
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