A website cameraman captured the moment when a yacht and an oil tanker collided in the Solent during the annual Cowes Week sailing regatta.
Two people were rescued from the sea after the collision. One was taken to hospital and later discharged.
Solent Coastguard was alerted at 15:20 BST on Saturday that the yacht Atlanta of Chester had been involved in the incident.
The collision involved the tanker Hanne Knutsen off Egypt Point, Isle of Wight.
The footage was taken by Tim Addison, who was filming racing for cowes.co.uk, the website of the Cowes Harbour Commission.