(For Laser Radial and 4.7 sail number positions please see part 4 rule 27(e) and 28(e).
- For Lasers up to sail number 148199, the sail number is a number moulded into the deck under the bow eye or into the transom, or displayed on a plate attached to the rear of the cockpit.
For Lasers with sail numbers from 148200, the sail number is the number displayed on a unique ISAF Building Plaque attached to the rear of the cockpit.
- All numbers shall be in accordance with the Racing Rules of Sailing except as amended by these rules in respect of type, positioning and minimum dimensions:
Height 300 mm.
Width 200 mm (excluding number 1).
Thickness 45 mm.
Space between adjoining numbers minimum 50 mm.
Sail numbers shall be regularly spaced.
Numbers on the starboard side shall be placed above those on the port side.
Each sail number digit shall be of one colour only. The sail numbers shall be solid and easy to read. After 1st March 1998 - sail numbers and national letters shall only be adhesive numbers. The use of permanent ink pens or similar to mark numbers and national letters on the sail is prohibited.
- For sails with numbers above 153000 and sails purchased after 1st June 1993 the sail numbers shall be glued or sewn on each side of the sail, with the bottom of the numbers on the starboard side of the sail placed along a line parallel to and 400 mm (+ or - 12 mm) below the seam at the middle batten pocket. The bottom of the numbers on the port side of the sail shall be placed on a line 400 mm (+ or - 12 mm) below and parallel to the bottom of the numbers on the starboard side of the sail. The starboard sail numbers shall commence 100 mm (+ or - 12 mm) from the leech and the port side numbers shall end 100 mm (+ or - 12 mm) from the leech (refer to sail number application diagram on pages 26-28 of the Handbook for procedure for applying sail numbers & letters).
- Sail numbers from 131000, sails purchased after 1st June 1993 and new sails stamped “New Numbers” shall have numbers that are clearly visible with the last four digits of the number in one dark, distinctive colour or black and any preceding numbers in a different, contrasting, distinctive colour (red is recommended).
- Exceptions to this Rule are permitted:
- when the hull and/or sail are provided by the organisers for an event and after approval of the International Laser Class Association, the numbers on the sail used for that event only may be single, double or triple digit numbers.
- in the case of a Laser borrowed or chartered for a specific event, and after written approval from the Race Committee, a competitor may use a sail with numbers that are different to the sail number allocated to the hull. The sail number used shall be the sail number allocated to the competitor’s own Laser. When the competitor does not own a Laser, the number used on the sail shall be the number of the Laser chartered.
- when a sail is damaged during a series and Rule 7 (c) applies the sail number may contravene Rules 4 (a) and (e) ii only when written permission for a sail number change is given by the Race Committee.
- National Letters, if required, shall conform to the same type, size, spacing and requirements as sail numbers (refer rule 4(b), (c), (d) and (e)) and shall be positioned as follows (also see diagrams on pages 26-28 of the Handbook): The letters on the starboard side of the sail shall be placed along the top edge of the seam below the bottom batten pocket (+ or -12 mm) and on the port side of the sail along a line 400 mm (+ or - 12 mm) below and parallel to the letters on the starboard side. The starboard letters shall commence 100 mm (+ or - 12 mm) from the leech and the port letters shall finish 100 mm (+ or - 12 mm) from the leech. The letters shall all be the same colour, which may be one of the colours of the digits of the sail number, or another distinctive colour. National Letters shall be required at all World Championships, Regional Championships and events described as international events in the notice of race or sailing instructions. National Letters may be required at any other regatta by the notice of race or sailing instructions.
- RED RHOMBUS
- Sails used in the following women’s events shall carry a red rhombus above the top batten pocket on both sides;
- World or regional (continental) championships.
- Events described as “international events” by the Notice of Race or Sailing Instructions.
- Other events that prescribe in the Notice of Race or Sailing Instructions that women competitors should be identified.
- The minimum size and approximate position shall comply with diagram "Rhombus".
- The rhombus may be retained for racing in other events.