What casualty degrades the boat's ability to perform one or more missions?

• A. Major Discrepancy
• B. Minor Discrepancy
• C. Equipment Failure
• D. Casualty

Answer: (A)

A casualty is classified by how badly it affects mission capability, and the level that directly signals a loss or significant degradation of the boat’s ability to perform one or more missions is a major discrepancy. This level means a deficiency is severe enough to hinder critical functions, potentially preventing full mission accomplishment until corrective action is taken. It’s more serious than a minor discrepancy, which implies limited impact, and it’s not simply a generic fault like an equipment failure, which can vary in severity. While casualty is the broad umbrella term for any loss of function, the term that describes the specific degradation of mission capability is the major discrepancy.