PTAT
As far as I can tell this cable, entering service in 1990, and offering (3+1)*140 Mbps PDH capacity between Manasquan NJ, Bermuda, Ireland and England, is technically very similar to its TAT relations of similar age. The name PTAT, for Private TransAtlantic cable system, indicates that it was planned and financed, and is operated, by a private group (Cable & Wireless, Mercury and Sprint), rather than by a traditional carrier consortium.