The Whale Warning Flag was first introduced around Northern Vancouver Island by the North Island Marine Mammal Stewardship Association (NIMMSA) to address the growing number of negative interactions between boats and whales. By using the same flag design we are collectively promoting and strengthening a consistent message of good boating behavior around whales throughout the coastal waters of British Columbia, Canada, and Washington State, USA.
Available in two sizes: 16" x 24" and 2' x 3'
If you have a flag:
• When you encounter whales within 0.65 miles (1km) of you, raise the flag
• Slow down to 7 knots or less
• Maintain compliance with Be Whale Wise Guidelines and laws
• Turn off fish finders and/or depth sounders.
If you see a flag:
• Whales are in the vicinity of the boat or land station flying the flag.
• Slow down to 7 knots or less
• Maintain compliance with Be Whale Wise Guidelines and laws.
• Turn off fish finders and/or depth sounders