The most common and most likely answer to this crossword clue is the 5 letter word LINER
I've seen this crossword clue in Independent
L
I
N
E
R
More clues leading to the result LINER
- Band on river vessel
- Ship — large one — with name “Queen Elizabeth”
- Labour leader in Queen’s vessel
- Ship’s writer
- Ship — might one be binned?
- Refuse to be carried in this cruise ship?
- Old railway company acquires one ship
- Ship with a protective inner layer
- Refuse to be enclosed in this cruise ship?
- Queue getting onto river boat
Buddy explains!

The straight part
We know that "cruise ship" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cruise ship = liner.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 LINER mean?
LINER noun- Someone who fits a lining to something.
- A removable cover or lining
- The pamphlet which is contained inside an album of music or movie
- A lining within the cylinder of a steam engine, in which the piston works and between which and the outer shell of the cylinder a space is left to form a steam jacket.
- A slab on which small pieces of marble, tile, etc., are fastened for grinding.
- Formal no show sock
- A large passenger-carrying ship, especially one on a regular route; an ocean liner.
- A ship of the line.
- A line drive.
- A basic salesperson.
- (in combination) Something with a specified number of lines.
- Short for penny-a-liner.