On board small passenger vessels which is...

On board small passenger vessels which is...

Question 1 of 3104866636ee728f7522a1c5181b2

On board small passenger vessels which is the minimum fill pipe size for a gasoline or diesel tank?

Question 1 of 31048

Q

On board small passenger vessels which is the minimum fill pipe size for a gasoline or diesel tank?

🔍 Key Concepts

• Fuel system construction standards for small passenger vessels in 46 CFR Subchapter T • Requirements for fill pipes versus vent lines on fuel tanks • How the Coast Guard handles dimensions: nominal pipe size versus performance-based language (e.g., ‘large enough to…’)

💭 Think About

• Ask yourself: does the regulation usually give a specific minimum nominal pipe size, or does it describe a performance requirement (like preventing backpressure and spills)? • Consider whether the Coast Guard would ever intentionally leave something as critical as fuel fill sizing completely ‘not specified’. • Think about which requirement is more likely to appear verbatim in the CFR: a precise dimension, or a general statement about avoiding fuel backpressure and spillage.

✅ Before You Answer

• Look in 46 CFR Subchapter T (small passenger vessels), in the sections on fuel systems (tanks, fill, and venting). • Verify whether the wording you see in the CFR matches exactly one of the answer choices (especially the dimensional ones). • Confirm if the regulation states a specific nominal pipe size for fuel fill pipes, rather than just a general performance description.