What does Say Again request?
Short answer
Repeat all or the specified part of the last transmission
Say Again is the standard request when a message was not properly heard. Identify the missing word or group when possible, then verify the repeated detail before acting.
Sources and scope
Reviewed by Richard Moore on . This answer is scoped to united kingdom marine vhf and internationally harmonised procedure; check the current chart, publication, local rules and official operational guidance before acting afloat.
Quick check
What does Say Again request?