SD BUSTLER – IMO : 7902336 Adept class Twin Unit Tractor Tug (TUTT) Built by: Richard Dunston, Hessle (Yard # 923) Delivered: 1981 Dimensions: 38.8 m (o/l) x 9.10M (beam) Speed: 12 knots Machinery: 2 x Ruston 6RKC Diesels driving 2 Voith-Schneider props Complement: 9 History • 1981: