Question 956 Rules of the Road

The correct answer is C) A power-driven vessel underway but stopped and making no way through the water. The reasoning is that the International Regulations for Preventing Collisions at Sea (COLREGS) state that a power-driven vessel underway but not making way through the water is required to sound two prolonged blasts in succession every two minutes. This signal indicates the vessel's status as underway but stopped, which allows other vessels to take appropriate action to avoid a collision. The other options are incorrect because they do not match the specific signal described in the question. A power-driven vessel making way through the water (A), a vessel restricted in her ability to maneuver (B), or a vessel being pushed ahead (D) would have different sound signals according to the COLREGS.