Columbus
Columbus-2 runs from Italy, via Spain and Portugal, to West Palm Beach FA and Mexico. It came into service at the end of 1994, offering 2*2.5 Gbps of SDH(?) capacity on a two fibre pair cable with optical amplifiers. It is some 11,000 km long and the initial cost was 345 M$. As far as I understand, backup for the Europe to USA part of the cable comes via satellite. Just before the system was put into service, successful tests of 4-way WDM were carried out on a 2000 km section, giving 2*10 Gbps of capacity, but this was not used in production. In March 1997 it was announced that additional capacity had been activated on Columbus-2, but no details were given.