Cargo in galleon’s restricting progress (5)
I believe the answer is:
going
'progress' is the definition.
(I've seen this before)
'cargo in galleon's restricting' is the wordplay.
'GOING' is hidden in amongst the letters.
But, I'm unsure how this is indicated.
Can you help me to learn more?
(Other definitions for going that I've seen before include "factor in horse's performance?" , "in action" , "Available" , "State of turf" , "Failing to stay" .)