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...and larger islands with few old sea routes will lose their choke points.
Indeed, D'Hara will be far more vulnerable: practically indefensible, IMHO.If townslands cannot have shipyards, then Aurvandil will be able to pwn Terran even more than they already do.
Like, say...Sirion.Bwahahahahahaaaa!
I might be wrong, but Asylon southern coastal regions lack a sea zone?