Most ports use harbour pilots, so you couldn't just drive a ship into a bridge or other structure and claim it's an accident, but it seems like an easy accident

Most ports use harbour pilots, so you couldn't just drive a ship into a bridge or other structure and claim it's an accident, but it seems like an easy accident to create (oops, steering broke). If the ship simply refuses to let the pilot board though, so the port authorities know something is wrong, once it's in port and on route, what do you do? Even if you get the military to blow it up you've got a massive sunk hulk blocking your port.