The most common and most likely answer to this crossword clue is the 7 letter word CRUISER
I've seen this crossword clue in Financial Times
C
R
U
I
S
E
R
More clues leading to the result CRUISER
- Crowds are in sound: pleasure boat in sight
- Ship curries all over the place
- Warship offering free curries
- A boxer’s craft?
- Crew’s, so to speak, on right warship
- Craft seen in conjurer’s first trick taking one in, right?
- Carbon pipe is carrying fluid at the centre of a ship
- Motorboat is trapped in Corfu weir every so often
- Warship seen from coast, heading for Rosyth
Buddy explains!

The straight part
We know that "A boxer’s/craft" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a boxer’s/craft = cruiser.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 CRUISER mean?
CRUISER noun- One who attends cruises.
- A kind of bicycle that usually combines balloon tires, an upright seating posture, a single-speed drivetrain, and straightforward steel construction with expressive styling.
- (in the days of sail) A frigate or other vessel, detached from the fleet, to cruise independently in search of the enemy or its merchant ships.
- A class of fast warships of medium tonnage, having a long cruising range but less armour and firepower than a battleship.
- A miniature aircraft carrier carrying VTOL aircraft.
- A passenger ship used for pleasure voyages, where the voyage itself and the ship's amenities are considered an essential part of the experience; also cruise ship.
- Any of several yachts designed for cruising.
- (law enforcement) A police patrol vehicle.
- Any of various nymphalid butterflies of the genus Vindula.
- Someone who cruises bars and neighborhoods looking for "action".