The TAT-14 is a 15,428 km transatlantic submarine cable system, connecting the United States to the United Kingdom, France, the Netherlands, Germany, and Denmark. The TAT-14 cable system is comprised of four fiber pairs, each operating at 40 x 10 Gbps DWDM, with a total design capacity of 3.2 Tbps. 

With a partial SDH ring protection network structure, the TAT-14 cable system has a total system capacity of 1.87Tbs calculated as: 
Southern route: 41 x 10Gbs channels + 640 Gbs SDH capacity 
Northern route: 18 x 10Gbs channels + 640 Gbs SDH capacity 
Total = 1.87 Tbs

The TAT-14 cable system was ready for service on March 21, 2001.