Navy & Maritime

GLSV is a value-added supplier for Navy and marine products. Our mission is to provide complete, customer-specific solutions for sound, vibration, and shock problems in the North American defense market. All of our engineering, design, and manufacturing is done in-house, allowing us to be more efficient and responsive to our customers.

We currently supply shock-qualified exhaust silencers for multiple shipyards, shock-qualified equipment, and NAVSEA weld-qualified exhaust piping assemblies. In addition to intake, exhaust, and silencer products, we manufacture and supply shock-qualified electromechanical equipment, large fabricated structures, and acoustic engineering services.

From concept development to fully engineered, manufactured systems – GLSV has a deep history of supporting the North American defense market. Our broad marine experience also includes structural design and analysis of a launch handling and recovery crane for the Littoral Combat Ship (LCS-5), stern door and ramp design and analysis for the LCS-5, a design/analysis/validation effort to qualify gas turbine intake silencers for the DDG51 Arleigh Burke class destroyer, DDAM analysis of shipboard components to meet MIL-S-901 shock requirements, and successful shock qualification of multiple components. GLSV is also developing a novel system for the launch and recovery (L&R) of unmanned underwater vessels.

Exhaust silencers

Independence-variant Littoral Combat Ship

GLSV is currently supplying ship service diesel generator (SSDG) exhaust silencers to Austal USA for the Independence-variant LCS ships. GLSV developed a turnkey solution for these silencers – a fully shock hardened and qualified design which was optimized to meet all acoustic and backpressure requirements. GLSV performs all of the manufacturing in-house, and all fabrication and welding in accordance with NAVSEA S9074-AR-GIB-010-278 requirements. Non-destructive testing and inspection is performed by our in-house Certified Welding Inspectors (CWI), in accordance with MIL-STD-271.

Multi-Mission Surface Combatant

GLSV is currently supplying ship service diesel generator (SSDG) exhaust silencers for the new Multi-Mission Surface Combatant (MMSC) vessel. GLSV’s silencers have been custom designed for airflow and acoustic requirements, and have been designed for high impact mechanical shock in accordance with MIL-S-901D.

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glsv + LCS

Inconel Exhaust Piping

GLSV is supplying multiple exhaust components and assemblies for a marine turbine gas engine application. We support the U.S. Navy Littoral Combat Ship (LCS) Program by supplying components for their main propulsion gas turbine engine systems. The components must adhere to stringent dimensional specifications as well as all NAVSEA welding, fabrication and inspection requirements. All components are fabricated using Inconel alloys, due to the high temperature operating environment.

Shock qualified equipment

GLSV developed a retrofit kit to upgrade an existing, COTS electro-mechanical device to withstand the shock and vibration environments on the LCS combatant ship. GLSV performed DDAM analysis and structural FEA, designed the structural and mechanical upgrades, and oversaw the Navy shock qualification per MIL-S-901. The unit successfully passed shock qualification and GLSV is currently manufacturing the upgraded units.

Stern Ramp and Door

GLSV designed, engineered, and analyzed the LCS-5 Stern Door and Ramp. Activities included full design responsibility, preparation and submittal of calculations, and preparation and submittal of DDAM analysis. GLSV also coordinated and led naval technical reviews including leading the team through approval of the formal CDR.

Propeller design for US navy torpedo

GLSV has been awarded a Phase-II SBIR from the Defense Logistics Agency (DLA) to reverse engineer and re-design a propeller for the US Navy’s MK54 Lightweight Torpedo. GLSV’s new propeller design will be low cost, high quality, and will also meet the quantitative engineering performance requirements in geometric design and volume, weight, produced thrust, noise and vibration, and structural strength and durability.

Turn-Key Solutions

Exhaust Systems

GLSV has specialized in the design and production of custom engineered exhaust systems for both Military and Commercial applications for 20+ years. Utilizing our extensive background in NVH and customized fabrication, GLSV has become a leader in producing robust, cost-effective solutions for our partners. We support defense prime contractors and shipyards by executing exhaust system development for various defense ground vehicle programs.

GLSV delivers solutions that are engineered for optimal performance, balancing competing requirements such as acoustic performance and air flow/backpressure requirements. Our custom solutions can meet tight space claim requirements and accommodate complex transitions, with the ultimate goal of designing a durable, qualified exhaust system that is easily manufactured and producible.

Intake Systems

GLSV also applies these same skill sets to the design and manufacturing of gas turbine intake silencers, intake piping systems and ducts, and cooling ducts. Our solutions are engineered for optimal performance for acoustic, thermal, and flow requirements.

Shock qualified components and systems

GLSV has a thorough understanding of how to design components and systems for the severe environments in ground combat vehicles and naval vessels. We design and qualify components for shock, vibration, and noise requirements such as MIL-S-901, MIL-STD 167, and MIL-STD 810. GLSV recently supported a customer by developing a retrofit kit to upgrade a COTS electromechanical device to withstand the shock and vibration environments on the LCS combatant ship.

Structural weldments

Whether it is internal development for our own products, or a contracted manufacturing effort – GLSV has the engineering and manufacturing expertise to produce structural components that meet stringent military standards. From weld qualification to nondestructive inspection and testing, GLSV manufactures fabricated components in accordance with NAVSEA S9074-AR-GIB-010/278, NAVESEA T9074-AS-GIB-010/271, and other Navy and MIL standards.

Custom equipment design

GLSV has a long history of designing and building turnkey systems and equipment for commercial and military customers. Some examples include custom test stands, end-of-line test/inspection systems, active motion compensation, and active noise cancellation products. These product development efforts leverage the skills of our multi-disciplinary engineering team in mechanical, structural, electrical, controls, and software.