I'm looking at my July 2015-2016 ABYC standards book and Standard H-33, Diesel
Fuel Systems, revised July, 2015, section 33.14 "Fuel Distribution, Return and Transfer Systems"
subsection 33.14.7: "Flexible hose shall be USCG Type A-1, A-2 or A1-15 (see H-33 TABLE1) if the line is within an engine compartment."
H-24, which is the Gasoline Fuel Systems standard, specifies A1-15 within an engine compartment.
Your surveyor appears to have made a mistake. I have to get retested in diesel in another year, so I definitely wanted to check to see if there had been a change to what I memorized in 2012!