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Seaward Marine Services Mobile Unit 4 got the call for an immediate need to clean the underwater hull of MV Frisia Bonn for Independent Container Lines of Wilmington, NC. Our customer said the ship was experiencing 20% “slippage” referring to efficiency lost in the thrust of the propeller. In the case of MV Frisia Bonn this was due to moderate marine growth on the hull and propeller causing more shaft turns required to make desired speed which dramatically increases the fuel consumption rate.
Independent Container Lines authorized the work on Wednesday 10/1 in the afternoon, the crew mobilized out of Norfolk VA on Thursday, and met the ship at the terminal 0700 on Friday 10/3 to begin dive operations. Despite diving in a hostile environment with a very swift non-stop current Seaward Mobile 4 crew pushed through continuously for 20 hours to get the hull cleaning complete and the ship underway as soon as possible. “Thanks very much for your quick response and hard work; I understand the conditions, at times, were less than favorable” said Rob Frazier Sr. Director US Ports & Warehouse Operations Independent Container Line.
Posted on: 22/Oct/2014Cecil C. Achord
Seaward Marine Services completed underwater inspections and cleaning on the USS NAUTILUS (SSN-571), the first nuclear powered submarine was launched in 1954 and the first ship to reach the geographic North Pole- 90° north had an extensive and pioneering role in the groundbreaking uses of nuclear power. NAUTILUS was decommissioned on March 3, 1980 after a 25-year career. In April of 1986, NAUTILUS joined the Submarine Force Museum in Groton CT. as the Historic Ship NAUTILUS.
Seaward Divers used the multi-bush machine SCAMP to clean the underwater hull followed by Divers with single brush machines cleaning smaller areas then inspecting and photo documenting all underwater appendages and the overall condition of the hull.
Posted on: 03/Oct/2014Cecil C. Achord
Divers replaced a four-foot Impress Current Cathodic Protection Anode on a Navy Ship in accordance with NAVSEA UWSHM Chap-19 “Cathodic Protection Systems”. As a qualified contractor for the U.S. Navy, Seaward Marine Services is required to meet stringent NAVSEA Director of Ocean Engineering Supervisor of Salvage and Diving requirements. The anode was found to be inactive and damaged during August 13 inspections and scheduled to be replaced by the SEA 00C representative, Seaward divers started repairs August 20 and completing repairs the following day. After the initial installation and operational test by Ships Force, divers used HYCOTE 461 to replace the insulating dielectric shielding that was removed when replacing the anode.
Posted on: 23/Sep/2014Cecil C. Achord
Seaward Marine Services is invited to the 10th annual Maritime Heritage Conference to participate in an education session by explaining the benefits of underwater ships husbandry “How Technology can Postpone or Predict Dry-docking”. Seaward will discuss hull surveys using LampRay® that can document Hull thickness, paint thickness, hull potential, and video document the underwater hull while tracking its position in the water resulting in a comprehensive hull condition assessment with accuracy within +/- 6”. Maintaining and repairing ships underwater hull will also be discussed including the benefits of hull cleaning, underwater painting, and Impressed Current Cathodic Protection.
The education session will also include opening words from John Elliker of Nauticus and a technical presentation of LampRay by Edwin Slate, engineering consultant of Control Solutions.
Posted on: 02/Sep/2014Cecil C. Achord
Marine Transport Lines, Inc. called in Seaward Marine Services to support the “TURBO” activation of M/V CAPE DOMINGO (T-AKR-5053). Seaward divers mobilized from Norfolk, VA to Charleston, SC to clean the underwater hull within a 48-hour window before the 681 ft. ship was to get underway to assess the crew and ship on readiness. Divers arrived on station mid-day Thursday August 14 and immediately deployed the equipment needed to clean the underwater hull, bow and stern thrusters, and propeller. Divers completed all work within a 20-hour period so the ship could make its scheduled underway event mid-day Saturday.
Posted on: 20/Aug/2014Cecil C. Achord
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.
Posted on: 31/Jul/2014Cecil C. Achord
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 8th and completed all hull cleaning and visual inspections on July 10th. Seaward Marine Services NDT division mobilized on July 9th and started underwater hull thickness, hull potential, and paint thickness readings on July 11th 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.
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.
Posted on: 08/Jul/2014Cecil C. Achord
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.
Posted on: 01/Jul/2014Cecil C. Achord
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.
Posted on: 11/Jun/2014Cecil C. Achord
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.
Posted on: 10/Jun/2014Cecil C. Achord