Section 13 Vessels Under Sail
No master shall navigate a sail boat on the river unless the mast can be lowered on and secured to the deck of the vessel.
A vessel under sail on the river shall have a right of way over any other vessel except for a mechanically propelled vessel which is restricted in its ability to manoeuvre.
When two vessels under sail on the river are approaching one another, the following rules shall apply—
when each has the wind on a different side, the boat which has the wind on the port side shall keep out of the way of the other, or
when both have the wind on the same side, the vessel which is to windward shall keep out of the way of the vessel which is to leeward.
For the purpose of this Bye-law the windward side shall be deemed to be the side opposite to that on which the mainsail is carried or, in the case of a square rigged vessel, the side opposite to that on which the largest fore and aft sail is carried.