With the arrival of spring in Duluth-Superior, the 2025 commercial shipping season is officially underway. The Twin Ports—one of the busiest inland ports in the U.S.—welcomes freighters and cargo ships from across the Great Lakes and beyond. While this activity signals economic momentum, it also brings new challenges for recreational boaters sharing the same waterways.
The Duluth Sail & Power Squadron (DSPS) reminds local boaters that safety and awareness are critical during the height of shipping traffic. Here’s what you need to know as you launch your boat this season.
Commercial Shipping Traffic: A Key Part of Twin Ports Life 🚢
Every year, hundreds of vessels—including bulk carriers, tankers, and lakers—arrive in Duluth-Superior to load or unload materials such as grain, coal, limestone, and taconite. These massive ships can over 1,000 feet in length and require considerable space to navigate, especially in narrow channels like the Duluth Ship Canal and St. Louis Bay.
While the shipping industry plays a vital role in regional commerce, it also increases the level of congestion, wake turbulence, and navigational risk for recreational boaters.
Navigating Around Large Ships: Key Safety Tips ⚓
1️⃣ Keep a Safe Distance
Large commercial vessels have limited visibility and cannot stop or turn quickly. Always give freighters a wide berth, especially in harbors and shipping lanes.
📏 Rule of thumb: Stay at least 500 feet from the bow and 200 feet from the sides and stern of any commercial vessel.
2️⃣ Monitor Marine Radio (VHF Channel 16)
Listen for traffic updates and callouts from approaching ships. Many freighters will announce their movements through the canal or turning basin.
📡 Stay tuned to VHF Channel 16 for alerts and use Channel 10 for bridge-to-bridge communication if necessary.
3️⃣ Avoid the Shipping Channel When Possible
Stay outside clearly marked commercial channels when operating at slower speeds or when sightseeing. Freighters must remain in these channels, so recreational traffic should avoid them whenever feasible.
4️⃣ Watch for Tugboats and Barge Traffic
Not all commercial traffic is easy to spot. Tugboats and barges operate frequently and may appear smaller but have limited maneuverability.
5️⃣ Be Cautious Near the Aerial Lift Bridge
This iconic Duluth landmark is also a key point of heavy marine traffic. Use extreme caution, stay alert, and be patient when waiting for bridge lifts.
How DSPS Helps Keep Boaters Informed and Safe 🛟
The Duluth Sail & Power Squadron offers vital support for local boaters as the shipping season begins:
✔️ Boating Safety Courses – Learn rules of the road, navigation, and how to handle encounters with large ships.
✔️ Free Vessel Safety Checks – Ensure your equipment is ready for high-traffic waters.
✔️ Local Boating Knowledge – DSPS members provide insight on common traffic patterns and problem areas in the Twin Ports.
💡 Join DSPS today to stay connected, informed, and prepared for a safe boating season alongside commercial shipping traffic.
Springtime on the Water: Be Smart, Be Safe 🌊
As the Twin Ports come alive with both recreational and commercial activity, it’s more important than ever to respect the shared space on the water. Commercial ships operate under tight schedules and limited maneuverability—it’s up to recreational boaters to stay alert, follow best practices, and keep safety top of mind.
📅 Ready to hit the water? Take a DSPS course or schedule a vessel safety check today!
🌐 Learn More & Get Involved: Member Info – Duluth Sail And Power Squadron
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