As others have posted, you must be joking? Are you aware that in order to reach the Great lakes via the ocean requires navigating several locks? Do you propos

As others have posted, you must be joking? Are you aware that in order to reach the Great lakes via the ocean requires navigating several locks? Do you propose the Russian subs stopped at the locks, paid the lock fees and continued on their way? when the reach the locks, what type of ship do they state they are https://greatlakes-seaway.com/en/commercial-shipping/tolls-schedule/ https://greatlakes-seaway.com/en/commercial-shipping/tolls-s... They don't list "submarine"?