Longitude 123, Inc. (L123) is a design-build general engineering marine contractor team providing owners and operators of California marine facilities with a one-stop shop for turnkey design, permitting and construction of marine and underwater facilities.

Our experience and understanding of the processes required to successfully plan, permit and perform marine and underwater projects in tough regulatory environments has time and again proven to minimize our client’s risk exposure and reduce project costs.

Core Values

Safety is Paramount
Excellence and Innovation are our Passion
Performance is Reality
Lead, Follow, or Get Out of the Way
Adversity is Opportunity Waiting to be Recognized

Longitude 123, Inc.

Longitude 123

L123 is a Leader in Producing Feasible and Economical Marine-Related Decommissioning Projects in California

L123 Minimizes Our Clients Risk Exposure and Reduces Project Costs

L123 Serves as a Trusted Partner in all Aspects of Marine Project Management

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Core Values