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Seaward, MHI, Accurate Marine, Team To Layup USNS Roy M. Wheat For Crowley

Posted April 12, 2021
Written by Cecil C. Achord

Crowley Government Services, Inc. awarded Seaward Marine Services, LLC Norfolk a firm fixed contract for removal of all skin valves including installation of cofferdams to support the removal of the thirty overboard hull penetration openings for the installation of steel blanks. The contract also required conducting an underwater hull inspection and cleaning of the underwater hull and appendages. Work was completed by Seawards Diving Vessel Coastal Pride at Lamberts Point Docks during the January 29, through March 11, 2021 availability.
 

 
Seaward Marine Services, LLC provided diving services in support of cleaning and inspection of  the underwater hull, opening of all sea chest gratings for cleaning and video inspection, re-installation of sea chest gratings, opening of bow thruster gratings for cleaning and video inspection of the bow thruster motor, housing, impeller, and tunnel, re-installation of bow thruster grating, cleaning and video inspection of the propellers, rudders, depth sounding fathometer, and doppler speed log. Seaward Marine Services designed, fabricated, and installed external stern tube seals for the port and starboard propeller shafts to remain in place during layup and provided diving services for the installation and monitoring of cofferdams sealing all external shell hull penetration openings in support of internal blanking of all skin valves and ultrasonic testing of each hull penetration inside the vessel performed by Marine Hydraulics International. Dewatering and pumping of all excess water and holding tank was accomplished by Accurate Marine Environmental. Sampling of ballast water and random paint samples was accomplished by Universal Laboratories at the direction of the Port Engineer. All work was accomplished safely, within the project budget, and timeline. Coastal Pride Dive Team accumulated 1,980 hours of safe dive ops in support of this effort.


 

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