Now, the law or custom of the road is that when two vehicles meet, each shall keep to the left. But the law or custom of the sea is that when two vessels meet they shall go to starboard and pass port to port. That is, each shall keep to the right. Mr Haddock contends that when the tide covers the road that road becomes a part of the tideway, that traffic upon it is thenceforth governed by the regulations and customs of the sea, and that he did right, therefore, to steer so as to pass Mr Rumpelheimer on his port hand. Further, it is the duty of a steam vessel to keep out of the way of a rowing-boat; and Mr Haddock argues that the plaintiff's motor-car when navigating the tideway has the status of a steam-vessel, and that the plaintiff has nobody but himself to blame.