Oil Removed from Decades-old Swedish Shipwreck
A diving contractor has removed oil from the wrecked research vessel Thetis, more than 30 years after the vessel sank.When the fishery research vessel Thetis went down into 30 meters of water close to Smøgen on the west coast of Sweden in 1985, it took a substantial quantity of fuel oil down with it. Quantities of the oil later escaped from the wreck and appeared periodically among the skerries on that part of the coast.Norwegian specialist Miko Marine said it had been asked by…
Subsea 7's Hot Tap Technology Tested
Subsea 7 Inc (OSE Symbol: SUB) has announced that following a three year development, testing and qualification program, its new subsea hot tap technology - Subsea Grouted Tee (SSGT), has successfully completed offshore trials in the North Sea and further demonstrated the technology's deepwater, diverless potential. Following an extensive DNV approved onshore testing program in test tanks and laboratories, the offshore trials of the SSGT technology involved the mobilization of a subsea grout mixing and injection unit, complete with test tee assemblies, on Subsea 7’s Seven Pelican dive support vessel (DSV). The skid mounted mixing unit was developed to enhance diver based hot tapping operations and also allows the SSGT technology to be utilized in deep water…
