The Great Yarmouth coastguard had a busy night last with three rescue missions in Norfolk.
At 10.30pm a 20ft inflatable boat was found abandoned on the boat ramp at Hunstanton.
A helicopter went searching for anyone who may have been on board between Skegness to Weybourne.
Skiing equipment and a bag of apples was on found on the boat.
No one was found which the coastguard team have described as a mystery, and they now say they are not searching for anyone unless they get further information.
The coastguard say it is likely to have been stolen.
Meanwhile, a yacht with two people on board was towed in 13 to 14 miles off Cromer after it got into difficulties at 8.20pm last night.
And this morning around 5.40am the coastguard team have towed in a yacht which was 15 miles off the Lowestoft coast, which had two people on board.
Watch manager Mario Siano said there were no injuries on any of the rescues.
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