TY - CPAPER T1 - Use of ROV's in operation of EAN underwater installation in the North Sea. A1 - Ricci,F UR - https://archimer.ifremer.fr/doc/00000/1164/ KW - Steel structures KW - Detection KW - Cracks KW - Surveillance and enforcement KW - Pipelines KW - Offshore structures KW - Underwater inspection KW - Offshore operations KW - Marine technology KW - Offshore KW - Unmanned vehicles N2 - The purpose of the paper is to present the state of the Art in use of ROV for assistance in offshore operations. This is done through a review of operations and gained experience during East Frigg Field diverless installation in 1988 and 10 years or under water Inspection, Maintenance and Repair (IMR) on all Fields operated by Elf Aquitaine Norge A/S (EAN). Basic requirements to the types of ROVs are given and the cost-efficiency of the operations are discussed. The potential for further development of the ROVs to replace divers for a large part of annual IMR tasks below water is addressed. Y1 - 1990/12 CY - Intervention Sous-Marine ISM 90, Toulon (France), 3-5 Dec 1990 SO - Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1991 ID - 1164 ER -