| Name | STRONGHOLD |
| Type | Tug |
| Year | 1931 |
| GRT | 150 |
| Engines | Steam |
| Builder | GOOLE SHIPBUILDING & REPAIRING CO. (1927) LTD. |
| At | GOOLE |
| Launch date | 15-08-1931 |
| Yard number | 299 |
| Owners | Mrs. J. Strong, Belfast |
| History | 1933 to the Ipswich Dock Commission. 1949 to Grangemouth & Forth Towing Co., Grangemouth as DUNDAS |
| Fate | Broken up in 1971 by P. & W. MacLellan at Bo'ness on the Forth |
Photo as DUNDAS