Boating with Whales – What Speed?

Photo: Laura Herriott, Pacific Whale Foundation

 

Previous studies have shown that at a speed of 15 knots or less, the likelihood and severity of collisions decrease (Currie et al., 2017; Vanderlaan & Taggart, 2007). During whale season, November through April, especially in water depths of 100 fathoms or less, maintain a speed of 15 knots or less to reduce your risk of striking a whale. Reduce vessel speed to 6 knots or less when approaching within 400 yards of a whale. Minimize sudden, unnecessary maneuvers or speed changes in the vicinity of whales.

Be aware that cumulative impacts may also occur. Your vessel may not be the only one to have approached the same whales. A slower speed during whale season not only protects the animals, but is prudent to reduce impacts from collision with these large animals to humans. A slower speed also reduces the risk of unintentional harassment, which often goes undetected. 

Suggested speeds posted in these web pages are based on the best available science from Hawaii and other regions.

 

an image showing the recommendations of safe boating practices from the main whale page.

 

1. What TIME of Year?

2. What DEPTH?

3. What SPEED?

4. What DISTANCE?

5. What’s the SOLUTION?

 

Return to Boating with Whales start page

(LAST UPDATED 7/23/25.)