A statement from Bond Offshore said: "We have always accepted that we made mistakes through honest confusion over telephone calls and emails.
"Lessons needed to be learned, lessons have been learned and lessons continue to be learned."
"We would like to express again our deep sorrow at the 16 lives lost in 2009. We owe it to their memories, and to the 160,000 men and women we carry every year, to continue to deliver the highest standards of safety in everything we do."
More top news
Mainly dry until later on Wednesday. A cooler, showery and blustery end to May
Mainly dry. Light rain out of thicker cloud over hills. Breezy at times and cooler than average
A look ahead at the forecast for the Border region.