Originally Posted by GodEmperorLeto
Actually, now that I consider it, the straits north of the Jutland are somewhat treacherous and actually should probably require boats to cross. But, then again, that region isn't recorded as being of very vital naval importance until the Viking Era, so maybe I'm just being a windbag.
As for Corsica/Sardinia, it would be EASIER, but would that make the game BETTER? Eh, go for uncrossable. The more uncrossable straits become, the more navally strategic they become. And the more navies become important. Which creates depth in naval strategy.