The Stena Forth is a mono-hull sixth-generation Ultra Deepwater drillship that’s a Class 3 dynamically positioned vessel. It can accommodate 180 people and was built at the Samsung Heavy Industries Shipyard in South Korea. It was delivered in 2009 and is one of seven ships that are part of the Stena fleet. At the time it was launched, the drillship was considered to be the largest dual-mast vessel on the planet.
With a maximum drilling depth of 35,000 feet and a water depth at 10,000 feet, the Stena Forth is built to work in harsh waters, if necessary. The ship is United Kingdom-flagged and possesses a length of 748 feet and a breadth of 138 feet.
The first work performed by the Stena Drill was for Hess in the Gulf of Sirte in Libya. The testing on the discovery well proved to be successful and was followed by an appraisal well drilling within seven miles of the original location.
The following year, the Stena Forth moved closer to home base, drilling approximately 109 miles west of Greenland’s Disko Island in conjunction with its sister ship, the Stena Don. That came its work in the Gulf of Mexico was abruptly terminated by a moratorium that was established in the wake of the disastrous Deepwater Horizon oil spill. The ship was regularly forced to deal with protesters from Greenpeace during their tenure in Greenland.
By 2015, the Stena Drill had undergone a conversion, which took place at the Grand Bahama Shipyard Limited. Over a two-month period, four Azimuth thrusters from Rolls Royce were refitted and refurbished. In addition, a host of repairs and replacements took place, including changing the sheave clusters, repairing the indentations the drillship sustained and painting the hull. The job was completed 10 days ahead of schedule.