The scenario expects Britain to keep the main contest at sea rather than undertake an invasion of France. British naval infrastructure and industry are treated as an advantage in a prolonged construction race. France cannot answer simply by diverting its army budget into shipbuilding. Even a neutral Germany remains a threat that French leaders have to consider. Land security requirements would therefore constrain the resources available for a naval war against Britain.
Notable Point · 1:02:58-1:03:38
Why France could not put its whole budget into the navy
A maritime war could favour British industry while France still needs to fund an army facing Germany.