BOTH INTERNATIONAL & INLAND Fog bell signals for vessels at anchor or aground shall be sounded at not more than which time interval?

Correct Answer: Option D — 1 minutes

Rule 35(g) requires that a vessel at anchor shall at intervals of not more than one minute ring the bell rapidly for about five seconds. This frequent, distinct sound signal is essential for alerting nearby traffic to the presence of a stationary vessel that cannot be seen in fog.