Transpac (cable system)

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Series of undersea telecom lines

title: "Transpac (cable system)" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["submarine-communications-cables-in-the-pacific-ocean"] description: "Series of undersea telecom lines" topic_path: "general/submarine-communications-cables-in-the-pacific-ocean" source: "https://en.wikipedia.org/wiki/Transpac_(cable_system)" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Series of undersea telecom lines ::

TRANSPAC or Trans-pacific cable (TPC) is a series of undersea cables under the Pacific Ocean.

Transpac 1

TRANSPAC-1 (TPC-1) was laid by AT&T's cable ship C.S. Long Lines. and opened on June 19, 1964. It connected Hawaii, Midway Atoll, Wake Island, Guam, and Japan. A branch from Guam to the Philippines was completed in December 1964. This cable connected with HAW-1 to complete the telephone connection to the mainland United States. It had a capacity of 142 channels. TRANSPAC-1 was part of the network that supported the Apollo 11 Moon landing mission in 1969.

Transpac 2

In 1975, Transpac-2 (TPC-2) connected Guam, Taiwan, Korea, Hong Kong and Singapore with 845 channels.

Transpac 3

Transpac 3 (TPC-3), which went into service April 18, 1989, increased capacity to 3780 channels. This was the first fiber-optic cable across the Pacific, and it replaced the two existing copper cables (Transpac 1 and Transpac2) as well as satellite circuits being used at the time. It was laid from Point Arena, California to Makaha, Hawaii, from which it goes to an undersea branching unit and splits to Chikura, Japan and Tanguisson, Guam.

TPC-5CN

The TPC-5CN cable network is a 25,000 km fiberoptic ring, carrying 5 Gbit/s in each channel.

History

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1995No.5 Trans-Pacific Cable Network(TPC-5) (Laid cable length: approx.2,958 km)
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References

References

  1. (March 21, 2011). "AT&T Tech Channel Archives: C.S. Long Lines". att.com.
  2. "Submarine Cable Networks". submarinenetworks.com.
  3. "Milestones:TPC-1 Transpacific Cable System, 1964". Engineering and Technology History WIKI.
  4. Mike Dinn. "The Manned Spaceflight Network".
  5. Calvin Sims. (April 18, 1989). "Fiber-Optic Calling to Japan Starts Today". New York Times.
  6. Huurdeman, Anton A.. (2003). "The Worldwide History of Telecommunications". Wiley-IEEE.
  7. . (May 19, 1874). ["Congressional Affairs"](http://chroniclingamerica.loc.gov/lccn/sn84038806/1874-05-19/ed-1/seq-3/). *Los Angeles Daily Herald*.
  8. (September 23, 1876). "The Trans-Pacific Telegraph". [[The Honolulu Advertiser.
  9. (February 10, 1895). "This Means a Cable". The Morning Call.
  10. "Corporate History". Kokusai Cable Ship.

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submarine-communications-cables-in-the-pacific-ocean