That’s about enough of a navy to maybe defend Canandaigua Lake.
When in good condition, the ships are very effective - might handle the whole Finger Lakes system.
I grew up in Rochester/Henrietta. The foothills to the south of the city are about the only places I miss - beautiful in each of the seasons, but especially Fall and Spring (unless there's a new coating of snow which can make a very nice landscape all its own).