Again evaluate engineers on ship in stormy seas
I believe the answer is:
reassess
'again evaluate' is the definition.
('assess' can be a synonym for 'evaluate' so perhaps 'reassess' is OK for 'again evaluate')
'engineers on ship in stormy seas' is the wordplay.
'engineers' becomes 're' (Royal Engineers).
'on' says to put letters next to each other.
'ship' becomes 'SS' (prefix in ship names eg SS Great Britain).
'in' indicates putting letters inside.
'stormy' is an anagram indicator.
'seas' anagrammed gives 'aess'.
'ss' placed into 'aess' is 'assess'.
're'+'assess'='REASSESS'
(Other definitions for reassess that I've seen before include "Make a further judgement" , "Examine again" , "Make another appraisal" , "Have second thoughts" , "size up again" .)