German naval fuel estimates remain too tight

Would more coal-to-liquid production and imports give Germany enough fuel for a larger fleet?

They could improve the stockpile, but German planning still appears to underestimate the inefficient fuel consumption of wartime naval operations.

Additional synthetic-fuel work and imports require funding, foreign currency, and permission to compete with other rearmament priorities. The larger problem lies in the assumptions used to calculate wartime needs. Ships zigzag, change speed, and manoeuvre rapidly in combat, all of which consume more fuel than steady peacetime steaming. German projections allow for some inefficiency, probably too little for sustained operations.