BlondieBC
Banned
It's probably worth pointing out that the US had significant coastal fortifications along the Atlantic - places like New York and Boston were quite heavily defended by artillery batteries. And ships of that period don't have a very good track records against coastal guns.
Take New York for instance - in the early 1900s (I can't remember when exactly - I drew this up for another forum, and I can't seem to access the the post were I wrote the date down) it was defended by shore-launched torpedoes, minefields, and the following batteries.
Attacking fortified ports is always the same. Attack outside of fortifications, and come at them from back side with land forces. You would either land in Southern NJ and attack north or land on the undefended part of long Island. Takes a huge number of troops, and good logistics. But if lucky or with total surprise, who knows, you might get a German division into NYC.
Boston likely requires landing in Southern New Hampshire.