The most common and most likely answer to this crossword clue is the 6 letter word RUDDER
I've seen this crossword clue in The Guardian
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More clues leading to the result RUDDER
- One who regrets accepting Doctor of Divinity as guide
- I’m not sure following fish is a way to steer boat!
- Somewhat bad-tempered during mounting of steering apparatus
- Right part of cow is provided to steer
- Right milk-giving animal has one steer using this?
- More robust handling dinghy’s original steering device
- Aussie politician with monarch getting guide on board
- Something at back of boat gets fish spinning about
- Director's more disrespectful after winning award ultimately
- Control right source of milk
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 RUDDER mean?
RUDDER noun- An underwater vane used to steer a vessel. The rudder is controlled by means of a wheel, tiller or other apparatus (modern vessels can be controlled even with a joystick or an autopilot).
- A control surface on the vertical stabilizer of a fixed-wing aircraft or an autogyro. On some craft, the entire vertical stabilizer comprises the rudder. The rudder is controlled by foot-operated control pedals.
- A riddle or sieve.
- That which resembles a rudder as a guide or governor; that which guides or governs the course.