🔍 Key Concepts

• 46 CFR Subchapter T requirements for seacocks and sea connections on small passenger vessels • Purpose of fittings below the waterline (risk of flooding and need to stop water flow quickly) • What makes a closure method “efficient and accessible” in an emergency

💭 Think About

• Ask yourself: In an emergency flooding situation, which requirement would the Coast Guard most care about for any opening below the waterline? • Which option sounds like a broad, general safety requirement that could apply to many different kinds of fittings and materials, rather than one very specific type? • Consider whether regulations usually require a specific material (like cast iron) or a specific tool/feature (like the ability to quickly shut off flow).

✅ Before You Answer

• Verify in 46 CFR Part 182 (especially sections on hull and machinery—sea connections) what is said about closing inlets and discharges below the waterline • Check which answer choice would clearly allow the crew to quickly stop water ingress in case a hose or fitting fails • Eliminate any option that sounds like a very narrow or unusual requirement rather than a general design standard for all below-waterline fittings