TAT-1
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TAT-1 was the first submarine transatlantic telephone cable system. It was laid between Kerrera, Oban, Scotland, and Clarenville, Newfoundland. Two cables were laid between 1955 and 1956 with one cabl
Routes under study in early 1956
A section of TAT 1 cable with the layers successively stripped back
IEEE Milestone plaque for the first submarine transatlantic telephone cable system
HAW-1
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HAW-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, each transmitting in one direction over 36 channe
TAT-1
…Transatlantic telephone cable HAW-1 TAT-1 Opening Ceremony Includes transcript of the official first telephone call over the cable…
HAW-1 cable pairs seen underwater in Hanauma Bay Nature Preserve, Oahu in June 2021. Degradation of the cable armor is visible.
Hanauma Bay presumed beach vaults, March 2022.