Portuguese vessel? (3)
I believe the answer is:
tug
'vessel?' is the definition.
(tug is a kind of vessel)
'portuguese' is the wordplay.
'TUG' is hidden in amongst the letters.
However, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for tug that I've seen before include "Pull at the towing vessel" , "Haul" , "gravitational force" , "Tow (of war?)" , "Small boat designed to pull larger ships" .)