| Name: | IMPETUS |
| Launched: | 06/05/1954 |
| Completed: | 24/07/1954 |
| Builder: | Mutzelfeldtwerft Gmbh, Cuxhaven |
| Yard Number: | 136 |
| Dimensions: | 141gt; 97.2 x 22.5 x 10.5ft |
| Engines: | Oil 6Cyl, 825bhp |
| Engines By: | Klockner-Humboldt-Deutz, Cologne |
| Propulsion: | 1 x Screw |
| Construction: | Steel |
| Reg Number: | 169261 |
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| History: | |
| 1954 | Ridley Steam Tug Co Ltd, cost £53,240 |
| 1955 | Ridley Tugs Ltd |
| 1959 | Chartered to Tyne Tugs Ltd |
| 1969 | Johannsen J & Sohn, Lubeck, cost £38,000; renamed JOACHIM |
| 1984 | Niels Henriksen, Svenborg; renamed STORESUND |
| 1997 | Promoport International, Italy; renamed MADERA V |
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| Comments: | Re-engined in 1971 with a 5Cyl version of the same engine. |
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