| Name: | X 99 |
| Type: | Landing Craft |
| Launched: | 30/04/1915 |
| Completed: | 1915 |
| Builder: | William Dobson & Co |
| Yard: | Walker |
| Yard Number: | 193 |
| Dimensions: | 131grt, 101nrt, 105.6 x 21.1 x 7.3ft |
| Engines: | Oil engine, 40bhp |
| Engines by: | J & CG Bolinders |
| Propulsion: | 1 x Screw |
| Construction: | Steel |
| Reg Number: | n/a |
| History: | |
| 1915 | The Admiralty; also designated as K5 |
| No later history known | |
| Comments: |

Above photo, showing X 100 and X 99 on the berth together, is copyright of Dave Mallard

Above photo, showing X 100 and X 99 being launched together, is copyright of Dave Mallard

Above photo, showing X 100 and X 99 on the river together, is copyright of Dave Mallard