Distress Signals — Canadian Modifications

4 In Canadian waters or fishing zones, in addition to the signals described in section 1, the following signals may be used or exhibited either together or separately to indicate distress and need of assistance:

(a) a square shape or anything resembling a square shape; and

(b) a high intensity white light flashing at regular intervals of 50 to 70 times per minute.

5 Notwithstanding section 2 and paragraph 4(b), a North Cardinal Buoy may use a quick flashing white light flashing at regular intervals of 60 times per minute.

6 Section 3 of this Annex shall be read as follows:

“The signals in the International Code of Signals and the International Aeronautical and Maritime Search and Rescue Manual, Volume III, shall be used as the circumstances require to supplement the signals described in section 1 of this Annex. The following signals are in addition to the signals described in section 1:

(a) a piece of orange-coloured canvas with either a black square and circle or other appropriate symbol (for identification from the air); and

(b) a dye marker.”