A woman has died after an accident at the harbour in Mundesley, on the north Norfolk coast.
Ann Corstorphine, 48, King's Lynn died when she slipped and fell under a trailer which had been towing a boat.
A diving team had just completed a dive and were returning to shore on Saturday afternoon when the accident happened.
The boat was being pulled up the Trimingham slipway by tractor, when the driver of the tractor changed gear, causing the vehicle to jolt.
It is thought Ms Corstorphine had been standing on a foot plate at the rear of the tractor and lost her balance.
Police are appealing for any witnesses to the accident to contact them.