When towing a vessel in order to keep seas on the vessel's bow or stern, what is the recommended angular range of the tow relative to dead ahead or dead astern?

• A. 0-15 degrees
• B. 15-30 degrees
• C. 30-45 degrees either side of dead ahead or dead astern
• D. 60-75 degrees

Answer: (C)

When towing, the tilt of the tow line relative to the towed vessel’s heading determines how the pull interacts with waves and the vessel’s steering. The best balance is found with the tow line angled about 30 to 45 degrees off dead ahead or dead astern.

This range provides enough forward pull to drive the towed vessel into the waves and keep its bow or stern facing the seas, while also introducing a stabilizing sideways component that helps control yaw and keeps the tow from veering off course. Angles much closer to dead ahead or dead astern (0–15 degrees) make the pull too aligned with the vessel’s axis, which can reduce stability and increase the chance of unpredictable motions in waves. Angles much larger (60–75 degrees) impose a strong sideways load, making steering difficult and increasing the risk of loss of control or line stress. The 30–45 degree range offers a stable, controllable tow that maintains seas on the bow or stern.