Pearl Harbor, HI- The USS MISSOURI Memorial Assn. tasked Seaward Marine Services Inc. to perform an underwater hull cleaning using SCAMP and hull inspection to include documentation of the 146 existing hull penetration blanking cofferdams.  Divers completed hull cleaning and inspections within a 10-day window in July using the Scamp multi-brush platform for cleaning the larger areas and smaller areas with single-brush units followed by divers completing the documentation of the hull penetration blanks.

The SCAMP multi-brush platform used to clean the 123,180 sqft of hull surface on the Museum Ship MISSOURI can clean approximately 450 ft2/min depending on the extent of fouling.

Seaward Marine Divers pictured left to right: Stan Wujek, JB Nielson, Ikoa Nixon, Craig Cohen, Diving Supervisor Norm Bradley, Casey Field, and Elijah Morse.

 

Museum Ship Battleship MISSOURI Hull Cleaning 7-2014 from Seaward Marine Services, Inc. on Vimeo.

Can't view the video on Vimeo?  Click here for the youtube version.

Seaward Marine Services mobilized a dive crew to Washington Navy Yard at the direction of NAVSEA Director of Ocean Engineering, Supervisor of Salvage and Diving (SUPSALV), start hull cleaning and inspections on the Display Ship BARRY DDG-933.  Seaward Marine’s divers started hull cleaning using the SCAMP multi-brush machine on Tuesday July 8^th and completed all hull cleaning and visual inspections on July 10^th.  Seaward Marine Services NDT division mobilized on July 9^th and started underwater hull thickness, hull potential, and paint thickness readings on July 11^th 2014 using the Lamp Ray platform, a ROV used to record and track this data.

The LampRay platform uses a high precision acoustic tracing system that allows real time data display and location.  The final report is delivered in a HTML format that can be easily navigated through color coded data presentation for rapid decision making.

The SCAMP multi-brush platform can clean an area approximately 5.5 ft. at 30 ft. per minute. The Display Ship Barry a Forrest-Sherman Class destroyer is 419 ft. long with a beam of 45 ft. took approximately 5.5 hours to clean the flat hull surfaces.
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All cleaning and inspections were completed using the requirements that include UWSHM chapter 28, chapter 17, and Navy technical manual Chapter 081 as required by SUPSALV. 

Click here to view SUPSALV's writeup on this job.
 

Lamp Ray setup next to DS Barry

Lamp Ray Vehicle

Launching the Lamp Ray

Seaward Mobile Two working alongside DS Barry

Patriot Contract Services awarded Seaward Marine Services hull inspection and propeller cleaning contracts for USNS Gilliland and USNS Gordon in Baltimore MD.  Seaward divers mobilized in early July to complete work on the two Gordon-class roll-on roll-off ships.  Seaward Marine Services tasking includes cleaning and polish the propellers and bow thruster, perform underwater inspections and cleaning of all sea chests, rudders, shafting, struts, bearing housings, ICCP anodes and reference cells, and appendages according to UWSHM chapter 28 chapter 17 and Navy technical manual Chapter 81.

Upon inspection and cleaning of sea chest suctions Seaward divers completed additional tasking which included the replacement of sea chest grating fasteners.  All work was completed on time and within contract pricing.

Seaward Mobile Three working alongside USNS Gilliland

USNS Gilliland and USNS Gordon

In order to fulfill US Navy contract requirements Seaward Marine Services was called upon to mobilize the Flyaway diving suite.  Designed on an aircraft shipping freight container platform, Seaward personnel designed and built-out the containers to accommodate long term all weather diving operations that can be air freighted wherever needed.  The mobilization suite allows for 1300 Cu Ft of working and storage space along with the safety redundancies needed to complete shallow water diving operations.  The equipment suite along with the SCAMP multi-brush cleaning platform was shipped out in June to complete underwater services in Diego Garcia in support of Seawards US Navy contract. 
 

Mobilization suite readied for shipment to Diego Garcia

Mobilization suite conducting hull cleaning at Naval Base Jubail, Saudi Arabia

 

Crowley maritime requested Seaward Marine Services to perform an underwater hull cleaning that included using the SCAMP multi-brush platform and a propeller cleaning and polishing.  Seaward divers then completed an underwater inspection of the hull to ABS regulations.  Upon completion of diving services, Seaward Marine Services NDT division started the comprehensive hull material survey using the Lamp Ray ROV system.

LAMP RAY is a robotic scanning system that gives a complete picture of the ships underwater hull condition including hull plate thickness, paint dry film thickness, and cathodic hull potential.  The ROV’s location is tracked and all data is viewed real time allowing NDT technicians to record data in a manner that is easy to read thus giving a ships manager the ability to identify potential problems that could be planned for and addressed.

 Seaward Marine personnel mobilized to Baltimore MD and all work was completed, and reports distributed within the specified period of performance.