In middle of gangway on ship gaining entry (7)

I believe the answer is:

ingress

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'entry' is the definition.
(I know that entry can be written as ingress)

'in middle of gangway on ship' is the wordplay.
'middle of' means to look at the middle letters.
'on' becomes 're' (regarding).
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
The centre of 'gangway' is 'g'.
'in'+'g'+'re'+'ss'='INGRESS'

'gaining' acts as a link.
This may not be correct. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for ingress that I've seen before include "Admission" , "The act of entering" , "Singers provide a means of entry" , "Ribbon-like pasta" , "Way in" .)

I've seen this clue in The Telegraph.

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