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How do I navigate Coatsworth Cut channel safely from Ashbridges Bay Boat Launch to access Lake Ontario?

Verified: 2026-06-12

Quick answer

Navigate Coatsworth Cut by staying between the red and green marker buoys, strictly observing the 10 km/h speed limit, and maintaining a sharp lookout for heavy jet ski and powerboat traffic before entering Lake Ontario.

Detailed answer

Navigating the Coatsworth Cut channel safely from the Ashbridges Bay Boat Launch requires strict adherence to maritime navigation rules and heightened situational awareness. The channel extends approximately 400 meters from the launch basin to the open waters of Lake Ontario. As you depart the launch area, you must immediately identify and stay between the red and green marker buoys. Remember the standard maritime rule: keep the red buoys on your starboard (right) side and the green buoys on your port (left) side when returning from the sea or heading inland, but reverse this when heading out toward the lake. The channel is relatively narrow, making it critical to maintain a slow speed. The strictly enforced speed limit within the cut is 10 km/h, which also helps minimize wake for other vessels. The greatest hazard in Coatsworth Cut is the extremely heavy recreational traffic. On weekends and summer holidays, you can expect to encounter dozens of jet skis and powerboats, often operating at high speeds or creating unpredictable wakes. Before exiting the channel into Lake Ontario, come to a complete stop or reduce speed significantly to check for crossing traffic. Always assign a dedicated lookout to scan for blind spots and never assume other operators see you. By respecting the buoys, maintaining the 10 km/h limit, and anticipating erratic traffic, you can ensure a safe passage to the lake.

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