“We joined forces with a world-class shipbuilder to develop custom ABS-compliant fabrications for waterjet propulsion of the renowned Navy Marine Littoral Combat Ship (LCS).”
— Brett Hartmen, Director of Business Development, Broadwind Energy Industrial Fabrication
 

Latest in hull design and waterjet propulsion systems

We partnered with a world-leading marine company known for some of the best engineering and naval architecture minds in the industry.  

In business for over 200 years, employing nearly 20,000 ship building professionals, and having built over 7,000 world-class ships to date, the littoral combat ship (LCS) they produce is the first of a new family of surface ships designed for the US Navy. The LCS is a fast, highly maneuverable, networked surface combat ship, which is a specialized variant of the family of US future surface combat ships known as DD(X). LCS is designed to satisfy the urgent requirement for shallow draft vessels to operate in the littoral (coastal waters) to counter growing potential 'asymmetric' threats of coastal mines, quiet diesel submarines and the potential to carry explosives and terrorists on small, fast, armed boats.

LCS utilizes waterjet propulsion, combined diesel and gas turbine engines (CODAG), which can be configured for high sprint speed or slower speeds for traveling the open ocean.  Hull design high sprint speed, shallow draft, and propulsion systems represent some of the latest advances in technology implemented on the ships. Broadwind Energy is proud to have worked closely with this industry-leading marine company to produce fabrications for four large transom rings that serve as critical components of the jet propulsion system which enable faster, more flexible ship transportation.

 
 
Get in contact with an Industrial Fabrication Specialist to learn more on how we can help with your marine requirements.

PROJECT SPECIFICATIONS

  • Follow military project specifications and procedures
  • Shipboard application
  • Materials included high-tensile steel, stainless steel, inconel, and chromoly
  • Three forgings that were all S355NL, which meets the EN10025 specifications
  • Combination of three separate forgings and a rolled EH36 plate
  • Rolled ring design with welded forgings
  • Welded nozzles that help to propel the water at varying speeds
  • Requires ABS compliance fabrications welding standards

SERVICES PROVIDED

  • Develop fabrication process and manufacture four custom-designed, 4 ft. diameter transom rings to fit into jet propulsion system at the transom of the ship
  • Fabricated rings channel the water jet flow exiting the stern of the ship at the transom
  • Precision fabrications enable the ship to move 50 Olympic swimming pool lengths every 30 seconds
  • Welding high-tensile steel up to ten inches thick including stainless, inconel, chromoly, carbon and other pipe material to unlimited wall thickness
  • Fabrications of other steel grades and aluminum in thicknesses up to twelve inches

THE RESULTS

  • Fabricated complex transom ring structure that is critical to jet propulsion system
  • Met U.S. Navy and ABS compliance standards
  • Components facilitated state-of-the-art transportation hull design
  • Delivered fabrications on schedule and budget
 

Industrial Fabrication Document Downloads

 

Accreditation, Safety and Design Oversight Standards

Why ASME?

The ASME Certification Mark, which is regarded as the hallmark of acceptance and certification, is used to indicate that the stamped item(s) conform to the ASME Boiler and Pressure Vessel Code (BPVC), as well as the Bioprocessing Equipment (BPE) Standard, and Reinforced Thermoset Plastic Corrosion-Resistant Equipment.

What is an ASME Welder?

The most commonly used codes for qualifying welders are the American Society of Mechanical Engineers (ASME) Section IX and American Welding Society (AWS) D1.1.  This code signifies that the welder has been certified, accredited, has undergone safety training, and is an expert welding professional.

 

Talk with one of our Industrial Fabrication Engineers to see how we can impact your project.


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