Waterway Hazards: What to Watch For While Traveling?

Obstacles in Downstream Navigation

When navigating downstream, be aware of the increased velocity of the water and potential hazards such as fallen trees, exposed rocks, and low bridges. Downstream currents can quickly sweep a vessel off course, making it essential to maintain a steady speed and stay vigilant. A speed of 2-3 knots allows for better control and increased reaction time.

Dealing with Unexpected Hazards

Upon encountering unexpected hazards, immediately reduce speed to 1 knot and assess the situation. If the hazard is a fallen tree, try to navigate around it at a 45-degree angle to avoid getting stuck or further damaging the vessel. If the hazard is an exposed rock, slow down and use a shallow draft hull design or a makeshift barrier to protect the hull. When approaching a low bridge, reduce speed and heighten the vessel’s clearance by removing any superstructures or reducing the load.

Bridge Clearances and Water Levels

Before approaching a bridge, check the clearance height and ensure the water level is adequate. A clearance of at least 2 feet is necessary to avoid getting stuck or damaging the bridge. Monitor water levels closely, especially during periods of high or low water, as changing levels can affect bridge clearances. Use a bridge clearance chart or consult with local authorities to determine safe passage times and water levels.