DNV 2.7-1: 2006, the Standard for Certification of Offshore Units, covers the transportation of gas packs and offshore cargo and ensures that the container used can withstand the rigours of offshore life. The redesign process also has to consider any associated permanent equipment for handling, filling, emptying or safety. Furthermore, the choices of material and protection and the ease of repair and maintenance have to be such that the equipment is suited to repeated use. Offshore containerAn offshore container is a portable unit with a maximum grossmass not exceeding 25 000 kg, for repeated use in the transportof goods or equipment, handled in open seas, to, from or betweenfixed and/or floating installations and ships.