Cryptic crossword clue
Boat that has fortified wine, heading 90 degrees off course 6

The most common and most likely answer to this crossword clue is the 6 letter word WHERRY

I've seen this crossword clue in The Times
W
H
E
R
R
Y

Buddy explains!

The straight part
We know that "Boat" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case boat = wherry.
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 WHERRY mean?

WHERRY noun
  1. A light ship used to navigate inland waterways.
  2. A flat-bottomed vessel once employed by British merchants, notably in East Anglia, sometimes converted into pleasure boats.
  3. A liquor made from the pulp of crab apples after the verjuice is extracted.

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