Which piece of information is part of the Big-5 Requirements for determining the severity of a SAR case?

• A. Vessel's position
• B. Last port visited
• C. Vessel color
• D. Cargo manifest

Answer: (A)

The most important factor when quickly assessing how severe a SAR case is the vessel’s position. Knowing where the vessel is (or was last known) sets the entire response in motion: it defines the search area, helps calculate how much time has passed and how far drift might have carried the vessel, and guides rapid decisions about which resources and search patterns to deploy. Without a known position, you can’t accurately gauge urgency or plan an effective operation.

The other details don’t directly drive the severity assessment. Last port visited can provide context about likely routes or destinations but doesn’t determine how urgent the situation is. Vessel color and cargo manifest don’t influence immediacy or search planning.