RSA 270-D:2 General Rules for Vessels Operating on Water.

I. Vessels shall be operated at headway speed only, while passing under all bridges.
II. (a) It shall be the duty of each vessel to keep to the right when vessels are approaching each other head on.
(b) When the courses of vessels are so far to the starboard of each other as not to be considered as approaching head on, they shall keep to the left.
III. When vessels are crossing courses or approaching each other in an oblique direction which may involve risk of collision, the vessel which has the other on its starboard side shall keep out of the way of the other, allowing the latter vessel to keep its course and speed.
IV. When vessels are running in the same direction and the vessel which is astern desires to pass the other, it shall do so only when sufficien