The most common and most likely answer to this crossword clue is the 6 letter word DROGUE
I've seen this crossword clue in The Daily Telegraph
D
R
O
G
U
E
More clues leading to the result DROGUE
Buddy explains!
The straight part
We know that "I may act as an anchor" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case i may act as an anchor = drogue.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 DROGUE mean?
DROGUE noun- (whaling) A floating object attached to the end of a harpoon line to slow a whale down and prevent it from diving.
- A type of bag pulled behind a boat to stop it from broaching to.
- A conical parachute used as a brake for some kinds of aircraft, or as a means of extracting and deploying a larger parachute.
- A conical basket or device used variously as a target for gunnery practice, and as a docking point for aerial refuelling.
- A wind cone.