The most common and most likely answer to this crossword clue is the 6 letter word SMACKS
I've seen this crossword clue in The Daily Telegraph
S
M
A
C
K
S
More clues leading to the result SMACKS
- Mike in bed succeeded getting hearty kisses
- Punishments or signs of love?
- Savours hearty kisses
- Spanking vessels?
- Tastes from hearty kisses
- Millions invested in bags for fishing vessels
- Fires across bow of motor boats
- Boats that can sail on account of blows
- Little male put into bed, son getting kisses
- Male in loose coats gives big blows
Buddy explains!

The straight part
We know that "fishing vessels" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fishing vessels = smacks.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 SMACKS mean?
SMACKS noun- A distinct flavor, especially if slight.
- A slight trace of something; a smattering.
- Heroin.
- A form of fried potato; a scallop.
- To get the flavor of.
- To indicate or suggest something; used with of.
- To have a particular taste; used with of.
- A small sailing vessel, commonly rigged as a sloop, used chiefly in the coasting and fishing trade and often called a fishing smack
- A group of jellyfish.
- A sharp blow; a slap. See also: spank.
- The sound of a loud kiss.
- A quick, sharp noise, as of the lips when suddenly separated, or of a whip.
- To slap someone.
- To make a smacking sound.
- To strike a child (usually on the buttocks) as a form of discipline. (US spank)
- To wetly separate the lips, making a noise, after tasting something or in expectation of a treat.
- To kiss with a close compression of the lips, so as to make a sound when they separate.