MGN 341 addresses dangers on Ro-Ro vehicle decks. When loading commercial vehicles, what additional allowance does the guidance suggest the Master/Chief Officer should consider regarding the stated weight of vehicles, and why?

A. MGN 341 requires every vehicle to be weighed individually on a weighbridge before boarding, with no allowance permitted

B. No allowance is needed — the weight stated on the vehicle's documentation/plate is always exact and can be used directly for stability calculations

C. The allowance only applies to private cars, not commercial vehicles, and is exactly 50%

D. MGN 341 advises that the actual weight of commercial vehicles (and their cargo/load) can exceed the declared weight, and suggests allowing an additional margin (commonly cited as around 10%) above the declared/plated weight when assessing the total weight being loaded onto the vehicle deck, to avoid underestimating the load on deck structure, lashings, and the ship's overall stability/stress

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