Cryptic crossword clue
Mate up at sea close to gunwale for Nelson, perhaps 7

The most common and most likely answer to this crossword clue is the 7 letter word AMPUTEE

I've seen this crossword clue in The Daily Telegraph
A
M
P
U
T
E
E


Buddy explains!

The straight part
We know that "Nelson, perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nelson, perhaps = amputee.
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 AMPUTEE mean?

AMPUTEE noun
  1. A person who has had one or more limbs removed.

Latest crossword clues with full explanations