ES. From anecdotal evidence only I believe Captain Hart Dyke was mistaken in his belief that Sea Dart could have taken kill in such a space. I am detached from my reference material but I believe Hermes flight was visual with the incoming pair before being hauled off. You would know better than I and there are no official documents available given the heat of the moment. Coventry's track charts went with her. 3 miles is my best guess.
I contributed to the making of this account and believe it to be the most accurate and recent.
Please let me know what you think.
Kindest regards.
Seconds from Disaster: Sinking the Coventry (S06E08) - Video Dailymotion