Frankly a province that is committed to Canada is more deserving of building "war" ships than a province whining about separation. Let Davie build icebreakers and other unarmed vessels, give the stuff with guns to Ontario! As for the number of corvettes, probably depends on whether 15 Rivers are actually built. Hopefully all are built then perhaps 8-12 corvettes, assuming they can be crewed. With up to 12 subs, 15 Rivers, 6 AOPS, 2 (hopefully 3) JSS, and other possible ships in the future, many more personnel will be needed.