Before any work is carried out on a ship's high-voltage electrical system, what is a "Sanction to Test", and what is generally considered "high voltage"?

A. A Sanction to Test is required only for testing the ship's navigation lights

B. A Sanction to Test is a formal document/permit issued by an authorised, competent person confirming that specific equipment has been correctly isolated and is safe to test or work on; high voltage onboard typically refers to systems operating above 1000V AC (or as defined by the ship's electrical safety procedures)

C. High voltage is defined as any voltage above 24V DC

D. It is a verbal agreement between two crew members with no formal documentation

A. Nothing — a test lift can proceed immediately after repairs

B. Testing should wait until cargo operations begin

C. The area within the grab's swing radius should be cleared of personnel before the lift

D. Only the crane operator needs to be aware the lift is happening

A. Who must remain clear of the exclusion zone while the lift takes place

B. The lunch schedule for the deck team

C. Only the weather forecast for the next watch

D. The cargo manifest for the next port