Navis Explorer I
The Navis Explorer I was built at a cost of $300 million at the Samsung Heavy Industries shipyard in South Korea for R & B Falcon, which was purchased by Transocean just months after the March 2000 delivery of the Navis. Using a dynamic positioning system, this Ultra Deep Water drill ship possesses five thrusters and is propelled by six diesel engines that are located in two separate engine rooms. It has the capacity to hold 80,000 barrels of oil, if necessary.
The sturdy nature of its construction was originally due to the belief that it would be put to work in the rugged area of Norway’s North Sea. However, the ship was eventually sent to the Brazilian waters, where it used its innovative design for its bilge keel and moonpool. With respect to the bilge keel, the issue of rolling has been addressed.
It has a water depth capacity of 10,000 feet of water, with its maximum drilling depth at close to 40,000 feet. It’s more than 650 feet long, 130 feet wide, with a depth of 64 feet and offers a double hull bottom. That unique hull design offered comparisons to semisubmersible ships, primarily due to the fact that it reduces the motions.
Another innovation was seen in the presence of a dual activity derrick, which offers greater efficiency. Here, the drilling rotary table is joined by an auxillary rotary table that makes up pipe. In the event that well testing of an extended nature is needed, room is available to construct offloading facilities and a flare boom.
After being purchased by Fred Olsen Energy in 2002, the ship was renamed the Belford Dolphin. The Singapore-flagged ship has seen its production capabilities drop in conjunction with the downturn in oil prices over the past few years.