Seafox 4 is a six-legged, self-elevating jack-up unit for accommodation, construction, maintenance, and well services. The unit was built to American Bureau of Shipping (ABS) classification requirements and is designed to operate throughout the year in water depths of up to 46 meters. In 2015 Seafox 4 was upgraded.
The unit offers permanent accommodation for 139 Persons on Board (POB) and has an accepted UK Safety Case for accommodation, maintenance, and well-service activities in the Dutch and UK territories. Life on board is pleasant and enjoyable thanks to the various leisure facilities and additional health and well-being amenities.