Kaumalapau Harbor breakwater
Kaumalapau Harbor breakwater

Kaumalapau Harbor Breakwater Repair

Sea Engineering completed detailed engineering design and construction plans and specifications for a complete re-building of the Kaumalapau Harbor breakwater.  This is a major coastal structure, with a final construction cost of $23 million. Design work included:

  1. A multi-beam hydrographic survey to precisely determine the existing bottom configuration
  2. Evaluation of design wave conditions
  3. Hydraulic model studies of breakwater stability

The repair design utilizes 35-ton Core-Loc concrete armor units, which are the largest unit of this type in the world to date.  Sea Engineering coastal planning and permitting work also included:

  1. Preparation and coordination of an Environmental Assessment
  2. Federal and State permit applications

Environmental coordination included Fish and Wildlife Coordination Act requirements; Endangered Species Act, Section 7 consultation; Clean Water Act, Section 404 evaluation; National Historic Preservation Act coordination; Clean Water Act, Section 401 Water Quality Certification; and Coastal Zone Management Consistency Certification.