Sailing Instructions – 2025 Thursday Night Racing (TNR)

1. RULES

1.1 The event is governed by the rules as defined in The Racing Rules of Sailing.

2. NOTICES TO COMPETITORS

2.1 Notices to competitors will be posted on the official notice board located on the exterior west side of the change room building

3. CHANGES TO SAILING INSTRUCTIONS

3.1 Any changes to the sailing instructions will be posted before 17:00 on the day it will take effect.

4. SCHEDULE OF RACES

4.1 Racing will take place every Thursday from May 8 to September 18, 2025. 

4.2 All Classes - The scheduled time for the warning signal for the first race of the evening will take place at 18:27.

4.3 When boats have finished, they should proceed directly to the start area. The warning signal for each succeeding race will be made as soon as practicable after the last boat has finished the previous race.

5. CLASS FLAGS

5.1 Class flags shall be as follows:

Pennants	Fleets
	Optimist
	Single-handed Monohulls (Excluding ILCA 4) ILCA 7, ILCA 6, Bytes, etc
	Multi-handed Monohulls Lightning, Comet, 420, 29er, etc.
	Open Multihulls Hobie, Seaspray, etc
	ILCA 4

5.2 Classes may be combined when numbers make it practicable.

6. THE COURSES

7. MARKS

Mark	Description
Windward Rounding Marks (Except Opti Windward Mark)	Yellow or Red Inflatable Buoy
Opti Windward Round Mark	Dark Orange Inflatable Ball
Leeward Rounding Mark	Yellow or Red Inflatable Buoy
Starting Mark	Orange Spar
Finishing Mark	Yellow Spar

8. THE START

8.1 Races will be started as follows:

Minutes before starting signal	Visual signal	Sound signal	Means
3	Class flag	One	Warning signal
2	P, I, Z, Z and I, U or black flag	One	Preparatory signal
1	Preparatory flag removed	One long	One minute
0	Class flag removed	One	Starting signal

* see appendix for reference guide

This changes RRS 26.

8.2 Green Fleet Sailors will start when the preparatory signal is removed (one minute prior to the regular start of their class).

8.3 The starting line will be between the orange flag on the Signal Boat and the starting mark (orange pin) at the port end of the starting line.

8.4 Boats whose warning signal has not been made shall keep clear of boats that are starting.

9. CHANGE OF THE NEXT LEG OF THE COURSE

9.1 To change the next leg of the course, the race committee may choose to lay a new mark (or move the finishing line) or just move the original mark. If a new mark is placed on the course, the old mark will be removed as soon as practicable.

9.2 When, in a subsequent change a new mark is replaced, it will be replaced by an original mark. Any mark to be rounded after the new mark may be moved to maintain the course configuration without signaling.

10. THE FINISH

10.1 The finish line will be between the yellow flag on the Signal Boat and the yellow finish mark.

10.2 Boats failing to finish within 10 minutes after the first boat sails the course and finishes will be scored Did Not Finish (DNF) without a hearing.  This changes RRS 35, A4 and A5.

11. PROTESTS AND REQUESTS FOR REDRESS

11.1 Protests shall be delivered to the club office within the protest time limit.

11.2 The protest time limit is 30 minutes after the Signal Boat docks.

12. SCORING

12.1 The SailWave CHIPS high points scoring system will be applied. This changes RRS 90.3.

12.3 OOD (Officer on Duty) score will be assigned to any racer who misses a race to act as the Race Committee. The points for OOD are the best of: (i) average of all their non-DNC results over the previous month (ii) DNC for that day

13. SAFETY REGULATIONS

13.1 All competitors shall wear a Canadian approved PFD at all times while on the water. Competitors may temporarily remove their PFD only while adjusting clothing or personal equipment. Flag Y will not be flown. This changes the Preamble to Part 4 and RRS 40.

13.2 Competitors who require assistance should wave one arm with hand open. If no assistance is required, the arm should be displayed with fist closed.

13.3 A boat that retires from a race shall notify the race committee as soon as possible.

14. DISCLAIMER OF LIABILITY

14.1 Competitors participate in the regatta entirely at their own risk. See RRS 4 Decision to Race. The organizing authority, its agents and the Calgary Yacht Club will not accept any liability for material damage or personal injury or death sustained in conjunction with or prior to, during or after the regatta.

15. OUTSIDE HELP

15.1 Any boat which has current standing in any race of the latter 20% of a class may be coached at any time. All boats in the Optimist Fleet may be coached at any time.

Appendix: International Signal Pennants as referred to in SI

International Ref.	Pennant	Sailing Instructions CYC
Optimist Class Flag		Warning flag for Optimist class commence start sequence on raising. Lowered on start.
# 1		Single-handed Monohulls (Excluding ILCA 4) Lasers, Laser Radials, Bytes, etc. commence start sequence on raising. Lowered on start.
# 2		Multi-handed Monohulls (Lightning, Comet, 420, etc.) commence start sequence on raising. Lowered on start.
# 3		Open Multihulls (Hobie, Seaspray, etc.) commence start sequence on raising. Lowered on start.
# 4		ILCA 4 commence start sequence on raising. Lowered on start.
P    (Peter)		Preparatory flag (Lowered 1 minute before start)
I     (Indigo)		Preparatory flag (Lowered 1 minute before start)
U    (Uniform)		Preparatory flag (Lowered 1 minute before start)
Z     (Zulu)		Preparatory flag (Lowered 1 minute before start)