A sailing instructor appeared in court after a party of schoolgirls were thrown into the water when two speedboats crashed in Cardiff Bay.
Nicholas Sawyer, 54, head coach at Cardiff Bay Yacht Club, is accused of breaking the Merchant Shipping Act.
The 10 girls, all under 18, were on a sail training weekend when they were put into the high-speed inflatables in the dark.
The boats crashed into each other in Cardiff Bay leaving one girl with a serious head injury and others with a variety of other injuries.
The Maritime and Coastguard Agency brought the case after an incident in October 2010.
They claim two Rigid Inflatable Boats collided while transporting a number of schoolgirls across Cardiff Bay in the dark.
As a result of the impact three children were thrown into the water. Other injuries abrasions, muscular injuries and head injuries.
Sawyer, of Dinas Powys, Vale of Glamorgan, will appear at Cardiff Crown Court again in the new year.
© Wales News