Towing & Ship-Assist · Interaction
When two tows meet and pass in a narrow channel, the interaction (pressure) forces between them are reduced by:
- AIncreasing speed to pass quickly
- BSlowing down and, where possible, increasing lateral separation✓ Correct
- CBoth turning toward each other
- DSounding five short blasts continuously
Explanation
Interaction forces grow with speed and shrink with separation, so reducing speed and opening lateral distance lessens the bow-cushion/stern-suction sheer when passing. Rule 9 also requires keeping to the starboard side of a narrow channel.
Authority: Shiphandling; vessel interaction; Navigation Rules Rule 9
Practice the full Towing & Ship-Assist bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Towing & Ship-Assist questions
- Interaction
'Squat' affecting a deep tow in a shallow channel results in:
- Interaction
'Bank effect' on a tow transiting close to one side of a narrow channel tends to:
- Towing Lights
For the purpose of the towing light rules, the 'length of the tow' is measured from the:
- Towing Lights
A power-driven vessel towing astern, with a tow 200 meters or less in length, exhibits which lights in addition to sidelights and a sternlight?
- Towing Lights
When the length of the tow astern exceeds 200 meters, the towing vessel displays:
- Towing Lights
By day, when the length of a tow exceeds 200 meters, the towing vessel and the vessel being towed must each exhibit: