When shore power is being connected to a ship in dry dock, what must be ensured, assuming that the ship's generators are rated at 450 VAC, 60Hz with a total capacity of 5000 kW?

Correct Answer: Option D — shore power phase sequence must agree with that of the ship

Connecting shore power safely requires strict adherence to phase rotation verification per 46 CFR Subchapter J. If the shore phase sequence does not match the vessel's bus, energizing the system will cause catastrophic reverse-rotation of connected machinery, severe electrical faults, and immediate equipment damage.