On small passenger vessels, when may a flexible hose be used in gasoline or diesel fuel lines?

Correct Answer: Option B — In both diesel and gasoline installations

46 CFR 182.440 permits the use of flexible hoses in both gasoline and diesel fuel lines, provided they meet specific regulatory standards for fire resistance and pressure ratings. These hoses must be installed to minimize vibration-induced fatigue and are subject to regular inspection to prevent fuel leaks.