CANTAT-3 is the third Canadian transatlantic telephone cable, in operation from 1994, initially carrying 3 x 2.5 Gbit/s between Canada and Europe. It branches to both Iceland and the Faroe Islands.

On December 17 2006, CANTAT-3 services came to a sudden halt due to damage to the submarine cable, disrupting service to hundreds of thousands of people connecting via internet and media providers (Síminn, Vodafone and Hive). Most notable effects of the event was a temporary shut-down of data-communications by Iceland's universities and hospitals which rely exclusively on CANTAT-3's services. Although it was predicted that a full recovery of the cable would take ten days, starting from midnight January 13th 2007, it actually took until July 29th, 2007 before it was fully restored. During those days the Icelandic universities and hospitals in Akureyri, Reykjavík relied on emergency connectivity obtained via local internet providers Siminn and Vodafone. The Icelandic government decided not to buy extra bandwidth for the university network through the functioning FARICE-1 cable, despite being a large shareholder in FARICE-1.

Landing points are:

  1. Pennant Point , Nova Scotia Canada
  2. Vestmannaeyjar, Iceland
  3. Tjørnuvík, Faroe Islands
  4. Redcar, England, UK
  5. Blaabjerg, Denmark
  6. Sylt, Germany

CANTAT-3 is operated by India's Teleglobe.

CANTAT-3 was the only NL-16 laser regenerative 2.5 Gig/s submarine system built in the world. Part of the this huge system was built at STC Submarine Networks, Portland Oregon from 1993-1994 (later became Alcatel Submarine Networks). STC Submarine Networks in Southampton, U.K. made the rest of the system. The US portion (shore end system) was laid off of Nova Scotia by the Teleglobe cable ship CS John Cabot. The main-lay portion was deployed off of Nova Scotia towards the Faroes onboard the AT&T ship Global Mariner. Other cable ships were involved in the completion of this system. This was the northern most cable system ever deployed at the time.


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