🔍 Key Concepts

• Heat transfer through a steel bulkhead when a fire is on the opposite side • Basic shipboard firefighting safety principles (never give a fire more air if you can avoid it) • Safe methods of checking for heat and fire spread through doors and bulkheads

💭 Think About

• From compartment A, what is the safest way to confirm a fire in B without increasing oxygen supply to that fire? • If a fire is in a closed space, what happens if you suddenly open a door or hatch to that space? • Of the options given, which one lets you detect the presence of a fire indirectly, using what fire does to nearby structures?

✅ Before You Answer

• Eliminate any option that would feed air/oxygen to a possible fire or expose you directly to flames and smoke • Eliminate any option that involves introducing an ignition source near a potentially hot door gasket or leaking vapors • Focus on an option that uses touch or observation of heat conducted through the bulkhead or door, while keeping the space sealed