NB 138 – Margrethe
| Vessel type | Special purpose vessel. |
| Vessel name | Margrethe, Skælskør, Denmark. |
| Delivery | April, 2009. |
| Description | Workboat for oilspil recovery. |
| Hull material | Aluminium. |
| Tonnage | 5,3 GT. |
| Length over all | 12,41 m. |
| Breadth beam | 3,83 m. |
| Depth | 0,81 m. |
| Passengers | N/A. |
| Main engine | Volvo Penta D3-140 HP Aquamatic Duoprop. |
| Aux. Engines | N/A. |
| Speed (knots) | 21 knots. |
| Propulsion | Volvo Penta. |
| Classification | DMA. |
| Other equipment | Available. |