Sailing ship held by supercargoes (4)
I believe the answer is:
argo
'sailing ship' is the definition.
'argo' can be an answer for 'ship' (I've seen this before). I'm unsure of the 'sailing' bit.
'held by supercargoes' is the wordplay.
'held by' indicates the answer is hidden within the clue.
'ARGO' is hidden in the letters of 'supercargoes'.
Can you help me to learn more?
(Other definitions for argo that I've seen before include "Jason's craft" , "Constellation; ship" , "Ship used by Jason in his search for the Golden Fleece" , "Ship involved in the quest for the Golden Fleece" , "Stars once recognised in the south" .)