Vessel carrying fuel from Loire (5)
I believe the answer is:
oiler
'vessel' is the definition.
(oiler is a kind of vessel)
'fuel from loire' is the wordplay.
'loire' anagrams to 'OILER'.
However, I am not clear how this is indicated.
'carrying' is the link.
Can you help me to learn more?
(Other definitions for oiler that I've seen before include "It carries fuel" , "it may be 4 [SHIPSHAPE]" , "Grease monkey" , "Chippendales assistant?" , "One applying lubricant" .)