Question 994 Rules of the Road

The correct answer is B) One prolonged and three short blasts. According to the International and Inland Navigation Rules, a vessel being towed, if manned, shall sound this signal while underway in fog. This signal indicates that the vessel is being towed and helps to alert other vessels in the vicinity of the situation. The other options are incorrect because: A) One prolonged and two short blasts is the signal for a vessel towing another vessel, not the vessel being towed. C) Two short blasts and D) Three short blasts are not the correct signals for a vessel being towed in fog.