| Name: | T B 21 |
| Type: | Torpedo Boat Destroyer |
| Keel: | 05/1907 |
| Launched: | 20/12/1907 |
| Completed: | 17/03/1909 |
| Builder: | R & W Hawthorn, Leslie & Co Ltd |
| Yard: | Hebburn |
| Yard Number: | 419 |
| Dimensions: | 308disp, 185.0 x 18.5 x 6.0(draft)ft |
| Engines: | 3 x Steam turbines, Parsons type, 3750hp |
| Engines by: | R & W Hawthorn, Leslie & Co Ltd, Newcastle |
| Propulsion: | 3 x Screws, 26.0knots |
| Construction: | Steel |
| Armament: | 2 x 1 x 12pdr guns; 3 x 1 x 18ins torpedoes |
| History: | |
| 17/03/1909 | British Royal Navy |
| 07/10/1920 | Broken up |
| Comments: | 07/10/1920: Sold for breaking up by Maden & McKee |
| Resold to Hayes for breaking up at Porthcawl |
Above photo of TB21 is copyright of Hawthorn Leslie
The Times, Wednesday, 07/10/1908