| Name: | IMPETUS |
| Launched: | 06/05/1954 |
| Completed: | 24/07/1954 |
| Builder: | Mutzelfeldtwerft Gmbh, Cuxhaven |
| Yard Number: | 136 |
| Dimensions: | 141grt, 97.2 x 22.4 x 10.5ft |
| Engines: | Oil engine, 4SA, 6cyl (320 x 450mm), 825bhp |
| Engines By: | Klockner-Humboldt-Deutz, Cologne |
| Propulsion: | 1 x Screw |
| Construction: | Steel |
| Reg Number: | 169261 |
| History: | |
| 07/1954 | Ridley Steam Tug Co Ltd; registered at Newcastle |
| 03/1955 | Company restyled Ridley Tugs Ltd |
| 01/1959 | Chartered to Tyne Tugs Ltd |
| 05/1969 | J Johannsen & Sohn, Lubeck; renamed JOACHIM |
| 1984 | Niels Henriksen, Svenborg; renamed STORESUND |
| 1997 | Promoport International, Italy; renamed MADERA V |
| Comments: | 07/1954: Cost £53,240 |
| 05/1969: Cost £38,000 | |
| 1971: Re-engined with a 5cyl version of the same engine. |

Above photo courtesy of Kevin Blair

Above photo courtesy of Alfred Turner

Above photo courtesy of Simon Elsdon

Above photo courtesy of Alfred Turner

Above photo as JOACHIM courtesy of Photoship

Above photo as STORESUND courtesy of Ray Harrison

Above photo as STORESUND courtesy of Ray Harrison

Above photo as MADERA V at Brest on 17/12/1997 by Y Perchoc