The most common and most likely answer to this crossword clue is the 6 letter word BOATED
I've seen this crossword clue in The Daily Telegraph
B
O
A
T
E
D
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BOATED mean?
BOATED verb- To travel by boat.
- To transport in a boat.
- To place in a boat.