Old king having no truck with old English vessel (5)
I believe the answer is:
canoe
'vessel' is the definition.
(canoe is a kind of vessel)
'old king having no' is the wordplay.
'old king' becomes 'cane' (I can't justify this - if you can you should give a lot more credence to this answer).
'having' indicates putting letters inside.
'no' becomes 'o' (resembles 0 - 'no' can mean 'zero').
'cane' going around 'o' is 'CANOE'.
'truck with old english' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for canoe that I've seen before include "Boat (that can be dug out!)" , "A dugout" , "Boat one paddles" , "Hunting vessel originating in Haiti" , "Simple boat" .)