The most common and most likely answer to this crossword clue is the 11 letter word DREADNOUGHT
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More clues leading to the result DREADNOUGHT
- Battleship and escort initially struggling in shortage of water
- Old battleship from Aden at sea in dry period
- Old warship had go and turned unexpectedly
- Didn’t open one book on deserted ship
- A thunder god in action? One has no fear whatever
- Vessel Dean frantically filled in water shortage
- Battleship has got a hundred at sea
Buddy explains!

The straight part
We know that "Vessel" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case vessel = dreadnought.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 DREADNOUGHT mean?
DREADNOUGHT noun- A battleship, especially of the World War I era, in which most of the firepower is concentrated in large guns that are of the same caliber.
- A type of warship heavier in armour or armament than a typical battleship
- One that is the largest or the most powerful of its kind.
- A garment made of thick woollen cloth that can defend against storm and cold.
- The cloth itself; fearnaught.
- A person who fears nothing.
- Something that assures against fear.