ABSTRACT Recent European innovations in hull form design have highlighted the savings which can be achieved in ship powering requirements by hull modifications, principally at the bow and stern. Designs of one of the authors, Sigurdur Ingvason of Sweden, are described and discussed. His twin‐skeg integrated hull design concept, which combines good hydrodynamic features with producibility is analyzed by model testing in comparison to a recent U.S. Navy tanker design, the T‐AO 187 class. Gains of the order of 14% at the ship's design speed are predicted. Major producibility concepts and features are also discussed at length. These concepts capitalize on the experience of several Swedish shipyards.