The immersion suit requirements for OSV...

🔍 Key Concepts

• Immersion suits are required based mainly on cold-water operations and latitude • Offshore Supply Vessels (OSVs) follow specific Subchapter L rules in 46 CFR for lifesaving appliances • Think about what latitudes are generally associated with tropical/warm waters versus cold waters where hypothermia is a major risk

💭 Think About

• Ask yourself: at what latitudes does water temperature typically become low enough that an immersion suit is considered necessary for survival in the water? • Compare each option and think: which latitude band moves far enough away from the equator that cold-water risk becomes significant for an OSV operating in the Atlantic? • Consider that regulations often choose a round-number latitude that clearly separates warm/tropical from colder regions—look for which option best fits that idea

✅ Before You Answer

• Verify in 46 CFR Part 133 (Lifesaving Systems for OSVs) where immersion suit requirements are discussed with reference to latitude • Check which specific latitude line is commonly used in regulations to distinguish tropical from non-tropical or colder waters • Before choosing, be sure the option you select matches a single, symmetric latitude limit used both north and south of the equator, not a random number

The immersion suit requirements for OSV apply to units operating in the Atlantic Ocean in which latitudes?

Above 20 degrees North and below 20 degrees South

Above 25 degrees North and below 25 degrees South

Above 30 degrees North and below 30 degrees South

Above 32 degrees North and below 32 degrees South

🔍 Key Concepts

💭 Think About

✅ Before You Answer