Theoretical design No. 9 for a 31,250 tons submarine tanker in 1960

Type circular. Deadweight 18,750 tons. Displacement 31,250 tons. Dimensions  472 x 67.4 x 67.4 feet. Speed 21.93 knots. EHP§ 13,900. DHP 20,860. One screw. Deadweight/displacement ratio taken as 0.60 and EHP§ based on A.T.T.C. 1947 line plus 0.0004.

Source

Stanley W. Doroff Editor. Naval Hydrodynamics High-Performance Ships. Office of Naval Research, Department of the Navy ACR-65. F.H. Todd, “Submarine cargo ships and tankers”.