Caister, Norfolk - At 8.45 p.m. on 22nd July, 1968, a life-boat helperinformed the motor mechanic that a radio message from the trawler Catherine Shaun of Fleetwood had been intercepted, reporting that she had an injured man on board who required medical assistance and that her engine had broken down. The life-boat, The Royal Thames, with a doctor on board, was launched at 9 o'clock in a light north easterly breeze and a moderate sea. It was one hour before high water. She came up with the trawler near the north west Scroby buoy at 9.15. The injured man was taken aboard the life-boat and landed at Great Yarmouth.

On the return passage to her station the life-boat again contacted the trawler, and having found that no further help was needed, she returned to Caister at 11.10..