Longitude 123, Inc. (L123) is a 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.

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     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