The most common and most likely answer to this crossword clue is the 4 letter word SARK
S
A
R
K
More clues leading to the result SARK
- Small rescue vessel needed for small island
- Island story’s beginning with Biblical boat
- Island ship, not up-to-date rescue vessel
- Second rescue boat finds island
- Small island, small boat
- Cutting short Scotsman’s shirt
- Vessel behind heading for small Channel island
- It’s a famous dame, sprightly character but not lead in panto
- Small rescue vessel, in 1945, liberated part of the British Isles
- Leading character in Sinbad with sizable chest? Dame here is famous!
Buddy explains!

The straight part
We know that "Island" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case island = sark.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 SARK mean?
SARK noun- A shirt.
- To cover with sarking, or thin boards.