Doggersbank Comes Back With 77 Offshore The traditional lines of the Doggersbank may well be back at least through another model, the Doggersbank 77 Offshore. This model designed by Vripack has been sold. It may have traditional tug-like explorer lines but this vessel will be cutting-edge in its operations, interiors and drive means. The vessel will be hybrid and feature modern contemporary interiors. Additionally, Delivering the best of both worlds, the 23.50-meter Doggersbank 77’ is the largest model that can be self-piloted without requiring a captain’s license. However, provision can be made for a two-crew arrangement if needed.