Flee from sailors caught on delta (7)
I believe the answer is:
abscond
'flee' is the definition.
(absconding is a kind of fleeing)
'sailors caught on delta' is the wordplay.
'sailors' becomes 'abs' (AB is short for able seaman).
'caught' becomes 'c' (cricket abbreviation).
'delta' becomes 'd' (phonetic alphabet: alpha, bravo, charlie etc.).
'abs'+'c'+'on'+'d'='ABSCOND'
'from' acts as a link.
(Other definitions for abscond that I've seen before include "Take flight" , "Steal away" , "Make off, do a runner" , "make quick getaway" , "cut and run" .)