Affiliation: | 1 CSIRO Mathematics and Information Sciences, GPO Box 664, Canberra, ACT 2601, Australia 2 CSIRO Marine Research, GPO Box 1538, Hobart, Tasmania 7001, Australia 3 National Centre for Marine and Coastal Conservation, Australian Maritime College, Private Mail Bag 10, Rosebud, Victoria 3939, Australia 4 Det Norske Veritas, Veritasveien 1, 1322 Høvik, Norway |