The correct answer is B) The deck crew at the hoist point should not wear baseball hats. This is correct because during a helicopter hoist operation, the deck crew should avoid wearing any loose clothing or headgear that could get caught in the hoist machinery or blown by the rotor wash. Baseball hats, in particular, can be easily blown off and potentially interfere with the operation. The Coast Guard regulations specify that all personnel involved in the hoist should wear properly secured hard hats or other appropriate protective gear. The other options are incorrect because: A) The drop line should be secured no more than 6 feet from the hoist position, not 15 feet. C) The "horse collar" should be placed around the injured seaman's armpits, not the chest. D) The ship's relative wind direction and speed is not as critical as the safety precautions for the deck crew.