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Case Study – The GBS Group Provides Valuable Insight Into Damaged Propulsion Motor Repair Saving Time and Added Expense


March 20, 2015 - Military Sealift Command and Maersk Line Limited have Predictive Maintenance programs in place to perform electrical testing of large DC propulsion motors. During the testing it was reported the armature and stator had problems and needed to be replaced. The report stated armature banding and Armature coil insulation appeared damaged due to overheating and AC drop test performed showed three bad field coils. The recommendation was to remove the motor and have it overhauled in the shop.

The propulsion motor is a General Electric 800 HP DC Electric Motor, Model 42G977. The propulsion motor is located in shaft alley located below the waterline. The only way to remove this motor from the ship is a hull cut. The motor weighs 41,300 Lbs. and does not fit thru the existing deck penetrations. To reduce the time in the shipyard, it was determined that GBS would replace the bad field coil and armature while in place. The GBS Group had responsibility to ensure the motor was properly overhauled and also to ensure the ship schedule was met (Owner Representative).

The repair of large AC and DC motors is often required to be done onsite vice removal to dedicated motor shops for repair. One of the technical challenges for in-place repairs is to fully understand the problem associated with the motor or control system and develop a plan to restore full operation in a timely and cost effective manner. We have the technical know-how and past performance assessing electric motor and control systems and determining the required course of action to fully restore operation. We are able to assist in key decisions that have added value to the repair process.

The GBS Group provided shipyard and subcontractor oversight for the interference removal and initial motor disassembly. Once the motor was split, a thorough inspection of the motor armature and field coils was accomplished. Testing indicated the field coils were connected in a series/parallel configuration. This caused the initial test results to be inaccurate. The field coils were separated and retested. During testing it was determined that the number 5 field coil was shorted, but all remaining field coils were satisfactory. GBS proceeded to have the armature cleaned and inspected. The armature banding, that was originally reported bad, was in good shape and not loose or damaged. A full set of electrical tests were performed on the armature and all tests were sat.

Based on accurate data from testing and visual inspections of the opened motor, a meeting was held with operator (Maersk Line Limited) and Owner (MSC) to discuss repair options. It was GBS recommendation to replace the damaged field coil in place and not remove or replace armature. All parties agreed this was the proper course of action, as it would correct all conditions with motor and reduce repair time and costs. All repairs were accomplished and motor fully tested. Repair time was reduced from an estimated 5 weeks to less than 3 weeks.

Contact The GBS Group at 757-965-4274 or email This e-mail address is being protected from spambots. You need JavaScript enabled to view it for more information on this specific case study or other marine engineering questions.


November 6, 2014 - The GBS group will be exhibiting at The International WorkBoat Show & Annual Conference.  The 2014 International WorkBoat Show is scheduled for December 3-5, 2014, at Morial Convention Center, New Orleans, LA.  We hope you visit our booth.

 Over 1,000 marine product and service suppliers exhibited at last year's show, and 85% have already said they'll be back. When face-to-face negotiation is critical this is the best place to get the job done; meet and troubleshoot with product experts, negotiate directly with multiple suppliers, discuss the latest advancements in vessel technology, and find the solutions that are right for your business.

Click here for more informaiton on The International WorkBoat Show


September 12, 2014 - The GBS Group will be exhibiting at the Smart Rail Congress & Expo.  The 2014 SmartRail USA Congress is scheduled for October 29-30, 2014, at the Charlotte Convention Center, Charlotte, NC.  We hope you will visit us at our booth.

Building on a 3 year track record, SmartRail USA is the definitive transit technology show. It showcases the technology that both drives ridership and develops the integrated transit networks of the future focussing on IT, Telecoms, Operations, Fare Collection, Passenger Engagement and more.

  • Strategic Congress: Featuring 35+ transit agency & rail executive speakers
  • Technical Seminars: Full programme of on floor seminars and case studies.
  • Exclusive Expo: 40+ innovative industry suppliers & solutions providers.
  • Networking: 15+ hours of networking opportunities across two packed days.
  • More agency attendees than any other event! And free to attend for them!

Click here For more information on the SmarRail USA Congress 2014

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GBS Congbs-connect3-no-taglinenected & Ore Builders

Partner to Present the

Technology House at

Homearama 2014

August 12, 2014 –GBS Connected, experts in home lifestyle automation services, proudly announced today a partnership with Virginia Beach based Ore Builders on The Technology Home at 2014 Homearama presented by Tidewater Builder Association (TBA).


“The GBS Group is extremely honored to be partnered with Les and Amy Ore on this high technology home that will display the capabilities of both of our companies,” said company CEO, Bob Golden. “Ore Builders combines today's technology with classic traditional homes, so they completely understand the value in demonstrating a fully integrated and Connected system that includes Audio/Video, Lighting, Window Coverings, and most importantly security.”


Homearama, Tidewater Builders Association’s annual showcase of custom built homes, comes to The Waterfront at Parkside neighborhood in Suffolk this fall. The Technology Home is designed to showcase the latest home automation solutions, but GBS Connected is putting their trademark touch on the project by focusing on the customer experience and lifestyle of the end user.


"As the former retail owner of Home Theaters by DAS, finding the right partner that understood our vision and passion for integrating technology within a classic home was important,” said President and Builder, Les Ore. “Amy and I were drawn to the GBS Connected story and Bob Golden’s vision and focus on the customer experience. His appreciation for simplification and lifestyle is exactly what we were looking for in a partner.”

About GBS Connected

GBS Connected is a division of The GBS Group, an employee-owned systems engineering, technology integration, and reliability engineering services company.  GBS Connected provides custom solutions that streamline, secure, modernize, and simplify the lifestyles of our customers. Solutions include home automation, whole home audio systems, audio/video solutions, including surround sound, tablet-controlled homes and yachts, streaming media, mobile internet, and much more. The company is headquartered in Virginia Beach, VA, with offices in Washington, DC, and Philadelphia, PA.

About Ore Builders

Formed in 2009 by Les Ore, Ore Builders LLC combines today's technology with classic traditional homes. This year marks the seventh Homearama for Ore Builders. As a longtime member of TBA, Les has worked with its affiliated builders in new and pre-existing construction for years. Ore is changing the face of new construction by building homes that offer new levels of design, innovative materials, high quality standards, and features at an affordable price. While others may charge extra for upgrades on models, Ore Builders’s motto is, “What you see is what you get.” Ore Builders is locally owned and operated in Chesapeake, VA and have built homes in Smithfield, Yorktown, Suffolk, Norfolk, Virginia Beach, and Chesapeake.

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June 9, 2014 - The GBS Group will be attending the APTA 2014 Rail Conference.  The 2014 Rail Conference is scheduled for June 15-18, 2014, at the Fairmont The Queen Elizabeth and Palais des congrès de Montréal in Montréal, QC, Canada.  We hope you will visit us at our booth.

APTA is the leading force in advancing public transportation.

APTA members are public organizations that are engaged in the areas of bus, paratransit, light rail, commuter rail, subways, waterborne passenger services, and high-speed rail. Members also include large and small companies who plan, design, construct, finance, supply, and operate bus and rail services worldwide. Government agencies, metropolitan planning organizations, state departments of transportation, academic institutions, and trade publications are also part of our membership.

To strengthen and improve public transportation, APTA serves and leads its diverse membership through advocacy, innovation and information sharing. APTA and its members and staff work to ensure that public transportation is available and accessible for all Americans in communities across the country.

For more information on the APTA 2014 Rail Conference click here


May 9, 2014 - The GBS Group will be attending MFPT 2014 Conference, Technology Solutions for Affordable Sustainment. This event will be held at the Sheraton Oceanfront Hotel, Virginia Beach on May 20-22, 2014, VA. We hope you will visit us at our booth.

The MFPT Society is an interdisciplinary technical organization strongly oriented toward practical applications.  The membership includes professional scientists, engineers, failure analysts, maintenance specialists and others who represent a wide variety of disciplines from government agencies, universities, research institutes and industry.  The MFPT Society policy is to cooperate whenever possible with appropriate technical committees from government, professional organizations, technical societies, industrial associations and consortia - both nationally and internationally.

Click here for more information on the MFPT 2014 Conference

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March 7, 2014 - The GBS Group will be attending EMTS: Electronic Machines Technology Symposium. This event will be held at Villanova University in Philadelphia, PA from May 28-29, 2014. We hope you will visit us at our booth.

The Electric Machines Technology Symposium (EMTS) is a biennial conference hosted by the Delaware Valley section of the American Society of Naval Engineers (ASNE).  It provides the naval engineering community with technical presentations, expert panels and networking opportunities to keep abreast of the Navy’s progress and remaining challenges in developing and providing smaller simpler more affordable and more capable power systems for future Navy ships.

Click here for more information on the EMTS Symposium

ASNE logoFebruary 4, 2014 - The GBS Group will be attending ASNE Day 2014: Engineering America's Maritime Dominance. This event will be held at the Hyatt Regency Crystal City in Arlington, VA from Feb. 20-21, 2014. We hope you will visit us at Booth #214.

Come learn about our controls, automation and electric boat conversion capabilities. GBS also specializes in on-board train communications, including Wi-Fi, and passenger information, as well as our innovative training videos, computer-based simulations, and online training. GBS representatives will be available throughout the show to discuss the full range of our maritime/defense technologies and engineering services.

Click here for more information on ASNE Day 2014

September 27, 2011 - The GBS Group announces the latest award of a prime contract win with the U.S. Navy to support In-Service Engineering (ISE) and Life Cycle Management (LCM) tasks for Naval Surface Warfare Center, Carderock Division, Ship Systems Engineering Station's (NSWCCD-SSES) Environmental Quality Systems. - more >

August 17, 2011 - The GBS Group announces the award of a software engineering contract with VIA Rail Canada to provide a real-time Train Status Information (TSI) system. - more >

August 5, 2011 - The GBS Group announces the recent award of a contract by MSC to conduct Waste Management study - more > 

June 1, 2011 – The GBS Group adds Josh MacKinnon to lead Train Communications group - more > 

May 19, 2011 - First GBS charity golf tournament raises $5,000 for the Wounded Warrior Project - more >

May 15, 2011 - The GBS Group develops mobile app for Verizon power station curtailment programs - more >

April 29, 2011 - GBS recognized as the 8th fastest growing company in Virginia by the VA. Chamber of Commerce Fantastic 50 - more >

March 15, 2011 - The GBS Group continues to provide O&M support to onboard Wi-Fi on Amtrak's Acela high-speed line - more >


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“It is rare to find an engineering and technical services firm that has REAL engineering talent.  The GBS Group is loaded, and has had a tight, high quality focus since its founding.  The GBS folks do not disappoint!”
— Gary Lisota, President/CEO, Valkyrie Enterprises, LLC

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