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NOAA Ship Thomas Jefferson


NOAA Thomas Jefferson

Tridentis was just awarded a contract through our GSA Professional Engineering Service Contract to provide Marine Engineering Services for the NOAA Ship Thomas Jefferson.  The Thomas Jefferson, whose home port is Norfolk, VA is a hydrographic survey vessel that was built by Halter Marine in 1991.  This ship is currently a part of a fleet of NOAA survey vessels.  The primary mission is to collect and process the data needed to maintain and update nautical charts along the U.S East Coast, Gulf of Mexico, Puerto Rico and the U.S. Virgin Islands.

Our responsibilities include performing the naval architecture and marine engineering services for the design to upgrade the grey water and sewage system to reduce effluent discharge and potable water use.  We will provide NOAA with alternatives for upgrading their grey water system by performing numerous feasibility and concept studies. Once an alternative is chosen, our team will prepare a detailed specification and develop design drawings of the new system.

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Tridentis Sponsors ASNE Day 2014

Tridentis is a proud sponsor of ASNE Day 2014 “Engineering America’s Maritime Dominance.”  This event will take place at the Hyatt Regency Crystal City 2799 Jefferson Davis Highway Arlington, VA 22202 from February 20-21, 2014.  The technical program for these two days can be found here.   If you aren’t registered yet you can do that here.  Our ad below will run in the convention publication, so keep an eye out for it and use the hashtag #ASNE14 to talk with us on Twitter.


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USCG Barque Eagle – Service Life Extension Program

USCG Barque Eagle

USCG Barque Eagle

We are excited to announce that we will be supporting the United States Coast Guard on the Service Life Extension Program (SLEP) for the USCG Barque Eagle. The Barque Eagle is the tall ship training vessel for the USCG Academy.  This vessel was built at the Blohm + Voss Shipyard in Hamburg, Germany in 1936.  At the close of WW2 this ship was taken by the U.S. from the Germans as a war reparation.  The Eagle’s datasheet can be found here.

Tridentis will be performing naval architecture and marine engineering services to extend the service life of this vessel.  This is a multiyear program including a tremendous amount of engineering work.  Some of the services we will be providing include:

  • Developing an approach to update the anchor windlass with a logistically supportable unit.
  • Recapitalizing the entire refrigeration plant with a logistically supportable system.  Replacing all of the reefer boxes with a standard Coast Guard configuration.
  • Consolidating the compressed air system and redesigning the system to USCG CFR standards for engine starting.

Tridentis is a small business subcontractor on this contract with The Columbia Group supporting the USCG Surface Forces Logistics Center

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Tridentis awarded MSC Engineering Design Services Contract


Tridentis was just awarded a three year IDIQ contract to provide marine engineering, naval architecture, electrical, and electronics engineering to the Military Sealift Command (MSC) Engineering Directorate.  The MSC Engineering Directorate has five divisions: N71 (Maintenance Management), N72 (Technical Division), N73 (Policy and Regulatory Compliance), N74 (Fleet Recapitalization), and N75 (Field Activity). Tridentis can provide the following services to all five divisions within the Engineering Directorate:


  1. Fluid systems design and analysis
  2. Main propulsion system analysis – diesel, steam, and gas turbine
  3. Auxiliary systems analysis
  4. HVAC system analysis and calculations
  5. Control and instrumentation systems analysis
  6. Monitoring systems analysis
  7. Deck machinery analysis


  1. Power quality and demand metering
  2. Control and monitoring systems (electrical and electronic)
  3. Interior Communications (IC) and Alarms
  4. Navigation systems
  5. Hull machinery (electrical)
  6. Lighting
  7. Communications
  8. Other specialized electrical and electronic engineering functions


  1. Structural design and analysis
  2. Cargo handling and lifesaving systems
  3. Weight and moment reports and calculations
  4. Stability calculations
  5. Inclining experiment calculations
  6. Hydrostatics
  7. Intact and damage stability
  8. Arrangements (hull and deck) and Outfittings
  9. Other specialized naval architecture functions


  1. Drydock certification inspections and studies
  2. Welding procedural studies and inspections
  3. Metallurgical analysis of shipboard piping, structure and materials
  4. Environmental impact studies related to shipbuilding and ship repair materials and procedures
  5. Painting inspections and studies related to ship repair and construction
  6. Forensic engineering and failure analyses; familiarity with the Root Cause Analysis (RCA) process
  7. AutoCAD
  8. Market Surveys
  9. Equipment Selection
  10. Port Engineering Services

Task orders on this contract are issued on a firm fixed price basis only.

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