The vessel, ex-Windermere, is expected to be delivered to Seascape in August.
It is equipped with a 15 man built-in saturation diving system and air diving system, 120 beds, and a 50-ton crane.
The vessel will perform inspection, repair, and maintenance as well as saturation diving for construction support, ongoing field maintenance and call-out repair.
There is an option to extend the charter through July 2018.
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