Orelia (MMSI 538002193, IMO 8208854, Call Sign V7GYG) is a diving support vessel operated by Technip Marine Operating Services who are based in Paris.
Built by Swan Hunter, Wallsend in 1984 as Yard. No 120 she measures 126m long, 19m beam, 7.7m draft with a GT 7260. A life extension refit was undertaken in 2004 by A&P Tyne, Hebburn.
She is designed for the simultaneous operation of two three man bells at depths of up to 450m through two seperate moon pools and has an extensive deck area of 1800m2 making her suitable for a wide range of sub-sea operations.
She is equipped with two main pedestal cranes located forward and aft with an additional telescopic articulated crane.
Propulsion consists of 6 Azimuth thrusters rated at 906kW each.
She also has a helideck and accommodation for 99 people in 62 cabins as well as saturation chambers for the diving teams.