INLAND ONLY While underway and in sight of another power driven vessel forward of your beam, more than 0.5 mile away, you put your engines full speed astern. Which statement concerning whistle signals is TRUE?

Correct Answer: Option B — You need not sound any whistle signals.

Inland Rules require whistle signals for backing propulsion only when vessels are in visual contact and maneuvering within half a mile of each other such that an immediate change in propulsion affects the meeting, crossing, or overtaking situation.