Except as modified by the Sailing Instructions, the rules are the same as adopted in all international regattas.
Recently, one of members wrote to this website's editor the following:.
Please find following a summary of the rules:
10 -- port keep clear
11 -- windward keep clear
12 -- clear astern keep clear
13 -- tacking keep clear
14 -- avoid contact, but not until it is clear the other is not keeping clear or giving room
15 -- give room to keep clear initially when getting right of way (unless other boat created the right)
16.1 -- give room to keep clear initially when changing course
17 – luffing rights (ie the right to force a windward boat head to wind): (i) a leeward boat has luffing rights before the start signal; (ii) a leeward boat also has luffing rights after the start signal EXCEPT where the overlap is established from clear astern closer than two boat lengths away from the windward boat in any direction. Note, a leeward boat has luffing rights when the overlap was established due to a tack by either boat (but not when the leeward boat tacked under the windward boat inside the zone).
18.1 -- no mark room for: (a) port boat vs starboard; (b) for tacking under another boat inside the zone; (c) for approaching mark vs leaving boat; (d) for mark that is a continuing obstruction unless 19 allows it
18.2 -- mark room:
(i) when overlapped at the zone, outside boat gives room thereafter (unless the overlap came from clear astern and it was impossible to give room) and, when clear astern at the zone, astern gives room thereafter. If there is doubt, presume did not obtain overlap in time and presume did not break overlap in time.
(ii) if overlap due to tack inside the zone when other boat was fetching the mark, tacking boat has no luffing rights and must give room if the other boat goes inside it
(iii) if proper course is to gybe, right of way boat must do so
19.2 -- obstructions:
(a) right of way boat can pass either side
(b) when overlapped, outside boat must give room (unless force majeure)
(c) at a continuing obstruction (even if a mark), if clear astern gets inside overlap without room at that moment to pass the obstruction, then no room (even if starboard vs port).
20 – give room to tack at an obstruction if requested (other than at a mark the hailed boat is fetching), either by tacking or responding “you tack” and then giving room
42 – propulsion not permitted (pumping, rocking, ooching, sculling, repeated tacks/gybes). Exceptions – (i) can roll for steering (provided that upon tack/gybe, boat speed is not faster on exit than it would have been without the tack/gybe), (ii) except on a beat, can pump once per wave/gust to facilitate surfing/planing, (iii) can scull to get back to close-hauled when above close-hauled, (iv) can pump to un-invert a batten, provided no propulsion, (v) can scull to reduce speed.
44 -- penalties:
(a) if any breach of rules above (even if no real detriment to the other boat and whether or not the other boat shouts protest), two penalty turns (NOTE, there is an argument that there is no need for turns if the other skipper says nothing and does not appear aggrieved, because then reasonable to assume you kept clear, provided there was no collision)
(b) if any part of boat or rig or skipper touches mark (even if not noticed by others), one penalty turn
Keep clear means right of way boat can sail course without avoiding action and when overlapped can also change course either direction without immediately making contact
Mark room means room for a boat to sail to the mark and then room to sail her proper course while at the mark