Earlier refrigeration improves endurance more than tactics

How would practical refrigeration without modern technology change earlier maritime operations?

It would improve food quality, reduce reliance on salting and faulty canning, and help long voyages and winter survival, but it would not by itself transform naval tactics.

Crews would be happier and face fewer food-preservation hazards, including some risks associated with early canned supplies. The wider effect would be better winter survival and longer food distribution networks, with population and expeditionary consequences rather than a single decisive naval change.