Basic Racing Rules of Sailing (RRS)
Right of Way. These are the four basic right-of-way rules.
(1) Port must keep clear of Starboard [rule10].
(2) Windward must keep clear of Leeward [rule11].
(3) AStern must keep clear of AHead [rule12].
(4) A boat "past head to wind" (i.e., "tacking") must keep clear of other boats [rule13].
(1) Port must keep clear of Starboard [rule10].
(2) Windward must keep clear of Leeward [rule11].
(3) AStern must keep clear of AHead [rule12].
(4) A boat "past head to wind" (i.e., "tacking") must keep clear of other boats [rule13].
Pictorial Explaination of RRS rules 10 & 11
For those who wish to read further the following site is a useful guide to the rules and their application http://www.racingrules.org/guide/guide01.htm