Vessels engaged in towing or pushing IN OR NEAR an area of restricted visibility, whether by DAY or NIGHT, will sound a signal consisting of one prolonged and two short blasts at intervals not more than 2 minutes.

Vessels engaged in towing or pushing IN OR NEAR an area of restricted visibility, whether by DAY or NIGHT, will sound a signal consisting of one prolonged and two short blasts at intervals not more than 2 minutes.

• A. False
• B. True
• C. Only at night
• D. Only when moving slowly

Answer: (B)

In restricted visibility, a vessel that is towing or pushing must use a distinctive sound signal to warn others and indicate its operation. The pattern is one prolonged blast followed by two short blasts, and it must be repeated at intervals not exceeding two minutes. This requirement applies regardless of whether it is day or night, precisely because the signal communicates the towing or pushing situation in conditions where visibility is limited. The rule isn’t about time of day or slow speed; it’s about making the towing or pushing activity clear to nearby vessels to prevent collisions.

In restricted visibility, a vessel that is towing or pushing must use a distinctive sound signal to warn others and indicate its operation. The pattern is one prolonged blast followed by two short blasts, and it must be repeated at intervals not exceeding two minutes. This requirement applies regardless of whether it is day or night, precisely because the signal communicates the towing or pushing situation in conditions where visibility is limited. The rule isn’t about time of day or slow speed; it’s about making the towing or pushing activity clear to nearby vessels to prevent collisions.