The ATSB has found that the speed boat Norma Jean was travelling too fast in the darkness to avoid a collision that claimed four lives.
The Australian Transport Safety Bureau's final investigation report states that the Norma Jean's probable high speed was inappropriate in the dark conditions and the use of the boat's internal lighting may have restricted the ability of the boat's skipper to see the barge until immediately before the collision.
At about 1500 on 12 March 2007, the unmanned barge Seatow 61 was anchored about three miles off Carnarvon, Western Australia, and the barge's anchor…