Between 9 and 12 Aug 1953, a series of shallow earthquakes (< 20 km depth) shook the Ionian Islands, to the west of the Greek mainland. The 3rd of these (on 12 Aug) caused most damage to Kefalonia and nearby Zakynthos.
The Royal Navy ordered HMS Bermuda from Malta with 2 Dragonfly from Hal Far
SAR Flt on board to join HMS Gambia
, steaming for Zakynthos. The Israeli Navy
picked up distress calls from Kefalonia and sent 4 warships to assist in the aftermath.
This was the event described towards the end of the Louis de Bernières novel Captain Corellis Mandolin
and portrayed in the John Madden (2001) film of the same name.