Specialist contractor Bisso Marine in the USA has acquired the derrick and pipelay barge Global Iroquois. The 400 x 100 x 30 foot (122 x 30 x 9 metre) barge has performed pipelay operations worldwide and will be renamed Bisso Iroquois.
Its main tub mounted dynamic revolving crane has a capacity of 250 tons (227 tonnes) and there is a Manitowoc 4100W Series 2 deck crane. For station-keeping there are ten single drum winches, each holding 5,300 feet (1,600 m) of 2.5 inch (63 mm) wire rope. Also fitted are six 75 ton (68 tonne) davits.
In the last decade the barge has been reconfigured and has been upgraded to improve capacity, technology and efficiency for international operation in harsh conditions, Bisso said.
Commenting on his latest acquisition, Beau Bisso, Bisso Marine president and CEO, said, “This is a significant move for Bisso Marine, as we have been searching for some time now for the perfect asset to substantially upgrade our current pipelay capabilities. The guys that designed and built this barge were clearly in the business of laying very big pipe, and it comes as no surprise to me to see why the barge has such a great reputation. We are very happy to have it in our fleet.”
Bisso Iroquois can accommodate 256 people. All ten mooring winches are in a machinery room below deck where there are also three main generators providing 7,875 kW of electrical power and 1,200 gallons per hour water-making plant.
The barge has a track record of laying large and heavy concrete coated pipe up to 55.5 inches (1.4 m) in diameter as well as laying 30 inch (760 mm) concrete coated pipe in 800 feet (244 m) of water.