🔍 Key Concepts

• 46 CFR Subchapter T requirements for fuel systems on small passenger vessels • Differences in fire and explosion risk between gasoline and diesel fuel systems • Regulatory limits on where and how flexible hose may be installed in fuel lines

💭 Think About

• First, ask yourself: which fuel type presents a higher vapor and explosion hazard, and how might that affect the allowance for flexible hose? • Consider whether the regulations completely forbid flexible hose, or allow it under certain conditions for one or both fuel types. • Think about typical engine-room practice: where might a short length of flexible hose be necessary, and how would inspectors view that for each fuel type?

✅ Before You Answer

• Verify in 46 CFR Subchapter T whether flexible hose is explicitly permitted or prohibited in gasoline systems. • Check if the regulations distinguish between "diesel installations" and "gasoline installations" in the fuel system rules. • Confirm whether any permissions for flexible hose apply to both fuels or only one, rather than assuming from practical habits.