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SEA/US Underwater Cable

20 terabits per second is here.

See how we’ve helped lead the way.

20 terabits per second is here.

See how we’ve helped lead the way.


The Project

Hawaiian Telcom is a partner in the Southeast Asia-U.S. (SEA-US) Trans-Pacific Fiber Submarine Cable System, which connects Indonesia, the Philippines, Guam, Hawai‘i and California.

This cable system provides an initial 20 terabit per second (Tbps) capacity, with state-of-the-art 100 Gigabit per second (Gbps) technology. As demand for capacity continues to grow and existing networks age, the SEA-US cable system plays a huge role in the future of bandwidth.

Extending more than 9,300 miles, the SEA-US cable system follows a route that has been designed to bypass congested and earthquake-prone regions and ensure stable connectivity.

View project details here.


  • The fastest cable system connecting Southeast Asia and the U.S.
  • Connectivity with other existing and planned cable systems
  • Backed by expansive and redundant terrestrial networks connecting cable stations in Guam and Hawai‘i
  • Terminates in the “Telecom District” of downtown L.A.
  • A route that bypasses earthquake prone areas of East Asia (including Luzon Straight)

We’re proud to be a partner in this exciting project, which offers a very real solution to the exponential growth in demand for bandwidth.

Our Products

As a partner in the SEA-US cable system, we are offering bandwidth directly to carriers and enterprise customers. We’ve also built a new cable landing station in Makaha, O‘ahu, from which we offer colocation and ground network services.

Bandwidth - We offer faster, more technologically advanced bandwidth from Hawai‘i to L.A. and Guam.

10G & 100G Transpacific IRU with options to upgrade (15 year leases)

Available Transpacific Routes:

  • Hawaii – LA
  • Hawaii – Guam
  • Guam - LA

Backhaul Network Services - Our services include connections to other cable landing stations in the State of Hawaii

Colocation - We provide services at the Hawaiian Telcom Cable Landing Station and at other Hawaiian Telcom Data Centers

Service date: August 2017

sea map

Why Hawaiian Telcom?

  • Hawaiian Telcom is backed by over 130 years of operational experience and 50 years of investment in submarine cable systems.
  • Fiber backhaul connectivity to other cable landing stations and Hawaii data centers
  • Extensive fiber network infrastructure for traffic terminating or originating from Hawaii and/or transiting through Hawaii on other Transpacific systems
  • 24/7/365 Network Operations Center (eNOC)
  • State-of-the-art Endeavor data center with colocation services

SEA-US Updates

Be part of the action.

  • View the latest developments on the SEA-US Cable Project.