PC-1 (Pacific Crossing 1) is a submarine telecommunications cable system in the North Pacific Ocean linking the United States to Japan.

It has landing points in:

1. Shima, Mie Prefecture, Japan

2. Ajigaura, Hitachinaka, Ibaraki Prefecture, Japan

3. Harbour Pointe, Snohomish County, Washington, United States

4. Grover Beach, San Luis Obispo County, California, United States

It has a design transmission capacity of 640Gbit/s, with 180Gbit/s lit (as of February 2006), and a total cable length of 20,890km. It started operation in January 2001.

Since 2009, PC-1 has been owned by Japanese carrier NTT.

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