Why a postwar German battle fleet would alarm France

How plausible would it be to include a retained German battle fleet in the interwar naval treaty system?

It could be written into a counterfactual treaty, but France would strongly resist while Britain weighed German disarmament against the Soviet security problem.

The proposed settlement leaves Germany with several older battleships and a treaty tonnage allowance, but France would fiercely oppose any German capital-ship force. France wanted Germany heavily constrained, while Britain saw some German defensive capacity as a possible counterweight to the expanding Soviet Union. The creation of Poland also affected that debate by placing territory between Germany and the Soviet frontier. Naval arms limits appear here as part of a wider European security system rather than a purely technical tonnage bargain.