John
the rules may allow one action, but the operation, schedule, SIZE, etc.....will allow the ferries to do just about what ever they want.
As Dog says, you may dead right, but it is not a game of who wins, as much as it is one of I am small, easily manuverable, shallower draft, etc...let me get well away from this erratic beast.
In some parts of the country, if you linger too long near a big boat, the authorities are going to show you the way...and they REALLY don't care about the rules..you simply do what they say and go where they want you.
Best bet, stay well away or use your radio, it is up to all capts to do what is prudent to avoid each other....right or wrong, rules or not...really doesn't enter it in the real world.