(a)
Where 2 motor boats approach the same public jetty from different directions
under such circumstances that if they proceed on their courses a dangerous
situation is likely to arise, the motor boat bound down a river shall give way
to the motor boat bound up a river.
(b)
Where 2 motor boats approach the same public jetty in the same direction under
circumstances that if they proceed on their course a dangerous situation is
likely to arise, the motor boat on the outer course shall give way to the
motor boat on the inner course.