TRANSPAC or Trans-pacific cable (TPC) is a series of
undersea cables Submarine cable is any electrical cable that is laid on the seabed
The seabed (also known as the seafloor, sea floor, ocean floor, and ocean bottom) is the bottom of the ocean. All floors of the ocean are known as 'seabeds'.
The structure of the ...
under the
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
.
Transpac 1
TRANSPAC-1 (TPC-1) was laid by AT&T's
cable ship
A cable layer or cable ship is a deep-sea vessel designed and used to lay underwater cables for telecommunications, electric power transmission, military, or other purposes. Cable ships are distinguished by large cable sheaves for guiding cabl ...
C.S. ''Long Lines''. and opened on June 19, 1964. It connected
Hawaii
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...
,
Midway Atoll
Midway Atoll (colloquial: Midway Islands; haw, Kauihelani, translation=the backbone of heaven; haw, Pihemanu, translation=the loud din of birds, label=none) is a atoll in the North Pacific Ocean. Midway Atoll is an insular area of the Unit ...
,
Wake Island
Wake Island ( mh, Ānen Kio, translation=island of the kio flower; also known as Wake Atoll) is a coral atoll in the western Pacific Ocean in the northeastern area of the Micronesia subregion, east of Guam, west of Honolulu, southeast of To ...
,
Guam
Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...
, and
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
. A branch from Guam to the
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no),
* bik, Republika kan Filipinas
* ceb, Republika sa Pilipinas
* cbk, República de Filipinas
* hil, Republ ...
was completed in December 1964. This cable connected with
HAW-1
HAW-1 (Hawaii No. 1) was the first submarine telephone cable laid between Hawaii and the mainland United States. HAW-1 was laid in 1957, and consisted of two cables, (one transmitting in each direction), each carrying 36 channels, with an individ ...
to complete the telephone connection to the
mainland United States
The contiguous United States (officially the conterminous United States) consists of the 48 adjoining U.S. states and the Federal District of the United States of America. The term excludes the only two non-contiguous states, Alaska and Hawaii ...
.
It had a capacity of 142 channels. TRANSPAC-1 was part of the network that supported the
Apollo 11
Apollo 11 (July 16–24, 1969) was the American spaceflight that first landed humans on the Moon. Commander Neil Armstrong and lunar module pilot Buzz Aldrin landed the Apollo Lunar Module ''Eagle'' on July 20, 1969, at 20:17 UTC, an ...
moon landing mission in 1969.
Transpac 2
In 1975, Transpac-2 (TPC-2) connected Guam,
Taiwan
Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...
,
Korea
Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...
,
Hong Kong
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delt ...
and
Singapore
Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borde ...
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
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
, 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
Point Arena, formerly known as Punta Arena (Spanish for "Sandy Point") is a small coastal city in Mendocino County, California, United States. Point Arena is located west of Hopland, at an elevation of . The population was 460 at the 2020 cens ...
to
Makaha, Hawaii, from which it goes to an undersea branching unit and splits to
Chikura, Japan and Tanguisson,
Guam
Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...
.
TPC-5CN
The
TPC-5CN
TPC-5CN or Trans-Pacific Cable 5 Cable Network is a submarine telecommunications cable system linking Japan, Guam, Hawaii and mainland United States.
It has landing points in:
* Ninomiya, Kanagawa Prefecture, Japan
* Bandon, Coos County, Oregon ...
cable network is a 25,000 km
fiberoptic
An optical fiber, or optical fibre in Commonwealth English, is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair. Optical fibers are used most often as a means to ...
ring, carrying 5 Gbit/s in each channel.
History
See also
*
Commercial Pacific Cable Company
Commercial Pacific Cable Company was founded in 1901, and ceased operations in October 1951. It provided the first direct telegraph route from America to the Philippines, China, and Japan.
The company was established as a joint venture of three c ...
*
Submarine communications cable
A submarine communications cable is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea. The first submarine communications cables laid beginning in the 1850s carried tel ...
References
{{Submarine communications cables in the Pacific Ocean
Submarine communications cables in the Pacific Ocean