German design for converting a Mackensen-class battle cruiser into a merchant oil tanker after the First World War

Derfflinger-class. ©Warshipsresearch.blogspot.com

Mackensen-class. ©Warshipsresearch.blogspot.com

Design conversion into oil tanker. ©Warshipsresearch.blogspot.com

Ersatz Yorck. ©Warshipsresearch.blogspot.com

Laid down by Wilhelmshaven Imperial Shipyard with yard number 25 in 1915, when building stopped 26 months were needed for completion and broken up on the slip in 1922.

The Ersatz A or Ersatz Fredrich Carl of the Mackensen-class battlecruisers which was to be named Fürst Bismarck was after the First World War to be converted into a oil tanker. The conversion was never executed. Cargo capacity 18,000 ton oil. Dimensions 223,0 (over all) x 30,40 (maximum) x 9 (loaded draught) x 11,90 (height sides) x 2,90 (freeboard) and a displacement of 32,900 tons at a draught of 9,00 metres. Propulsion consisted of 2-6,000 hp engines and 6 water tube boilers allowing a speed of 12 knots and a range of 6,000 nautical miles.

Mackensen-class preceded by Derfflinger-class succeeded by Ersatz Yorck-class. Displacement 31,000 (standard)-35,300 (full load) x 223 x 03.4 x 9.3 metres. Propulsion consisted of 4 geared steam turbines and 32 boilers supplying 89,000 shp allowing a speed of 29 knots.

Source

Bundesarchiv RM_3_17249.