On a vessel with turbo-electric drive, which of the following conditions would indicate that the propulsion motor had dropped out of synchronization with the propulsion generator?

Correct Answer: Option B — Excessive vibration of the vessel

In USCG Marine Electrical Systems (IEEE 45 and 46 CFR), regarding 'On a vessel with turbo-electric drive, which of the following conditions would indicate that the propulsion motor had dropped out of synchronization with the propulsion generator', the compliant technical standard is: 'Excessive vibration of the vessel'.