About the Company

Turnkey Marine Project Delivery

For nearly 30  years, Longitude 123 has been providing consulting and management services to owners and operators of coastal and inland  energy-related facilities. These services include turnkey engineering and design, project planning, environmental permitting, performance and management of marine and underwater construction and decommissioning projects.

Structural & Civil Engineering

Through the acquisition of Ventura-based engineering firm Thomas and Beers, LLC,  Longitude 123 provides a team of in-house structural and civil engineers specializing in structural mechanics, engineering, design, and finite element analysis to complement our project management services.

      Areas of Expertise

  • Submarine Pipelines (Gas and Oil)
  • Submarine Communication and Electrical Distribution Cables
  • Ocean Outfalls
  • Offshore Drilling and Production Facilities
  • Subsea, Coastal and Legacy Oil Wells
  • Hydroelectric, Reservoirs and Water Conveyance Systems
  • Coastal Energy – Steam Generated, Gas Turbine and Nuclear

L123 employs  multi-disciplinary teams consisting of professional engineering services, regulatory permitting services, and marine specialty contractors specific to each project. Our model provides the client significant advantages over traditional marine project planning by integrating the technical planning with the regulatory permitting process to produce permitted feasible means and methods at lower costs and on schedules tailored to our client’s requirements.

Longitude 123 Dynegy
Decommissioning California
The name “Longitude 123” is based on the line of longitude 123 degrees running coastwise offshore California and is representative of our California underwater focus. The numerals 123 also represent our specialized step-by-step California-adapted project planning, permitting, and performance processes.