RamscoopRaider
Donor
Impossible, the US Coast Guard probably does not exist, it was not formed until 1915 OTL, and forming it in a war is not likely to happen. Most likely the majority of warships would be small, shallow draft destroyers/large torpedo boats. Not as big as the USN's four stackers, but something more like the older Truxtun class, but modernized, or the British Cricket class, suported by the larger ships of the Great Lakes battleships and maybe some small cruisers and semi-submersible Torpedo boats, plus the inevitable converted civilian vessels at wartimeI'd imagine the bulk of Great Lakes Naval assets would be Coast Guard ships like the USCGC Tampa: