Two people, a woman and her daughter, died when the cargo ship Misje Verde collided with a pleasure boat in late July. The father and son were seriously injured but survived.
At the end of September, the captain and pilot aboard the cargo ship were convicted of negligence in maritime traffic, causing death and causing bodily harm.
As soon as the verdict was announced, the pilot's defense attorney, Thomas Håkansson, said it would be appealed.
"We think the district court got the issue of liability wrong," he said.