General – submarine cable
Sumitomo Electric Industries has safely installed a submarine cable into the Stikine Crossing via Southeast Alaska Power Agency (SEAPA).
The project was executed in collaboration with its subsidiary, Sumitomo Electric U.S.A., and subcontractors, ITB Subsea, Westpark Electric, Tongass Engineering LLC., Canpac Marine Services, Terra Remote Sensing, Prime Engineering and BAM, LLC.
The project required the removal and discarding of one spare phase of an existing 138 kV oil filled submarine power cable and the installation of a new circuit of three-core, double armoured, 69kV XLPE submarine cable in its place with ancillary equipment, accessories, and integrated communication fiber for a fully functional cable system in the Stikine crossing.
This crossing is approximately 17,400 feet (5,300 m) long and a maximum water depth of about 700 feet (215 m) between Vank Island and Woronkofski Island, southeast Alaska, U.S.A.
This transmission line feeds the borough of Petersburg, AK.
