Simple vessel trawler nets capsized (7)

I believe the answer is:

artless

I'm a little stuck... Click here to teach me more about this clue!

'simple' is the definition.
(similar in meaning)

'vessel trawler nets capsized' is the wordplay.
'ARTLESS' is hidden back-to-front in amongst the letters.
But, I'm not sure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for artless that I've seen before include "Without pretension" , "Naive - unskilful" , "Nave" , "Clumsy and uncaring" , "Ingenuous" .)

I've seen this clue in The Independent.

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