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AC-1
Owners: Tyco / Level 3 Communications
Landing points 1. Shirley, New York (Brookhaven Cable Stn.) 2. Whitesand Bay, Cornwall, England (Land's End Cable Stn.) 3. Westerland, Schleswig-Holstein 4. Beverwijk (KPN Telecom Cable Stn.)
Total length	14,000 km
Topology	unknown
Design capacity	40 Gbit/s
Currently lit capacity	120 Gbit/s
Technology	Fiber optics
Date of first use	1999 (1999)

Atlantic Crossing 1 (AC-1) is an optical submarine telecommunications cable system linking the United States and three European countries. It transports speech and data traffic between the U.S., the U.K., the Netherlands and Germany.^[1] It is one of several transatlantic communications cables. It was operated by American company Level 3 Communications and Irish company Tyco International, until their respective mergers in 2017 and 2016 with other companies.

It has landing points in:

1. Brookhaven Cable Station, Shirley, New York, United States
2. Land's End Cable Station, Cornwall, England, United Kingdom
3. Westerland Cable Station, Schleswig-Holstein, Germany
4. KPN Telecom cable station, Beverwijk, Netherlands

• "ATLANTIC CROSSING (AC-1) CABLE SYSTEM EXPANDS INTO THE NETHERLANDS". Retrieved February 5, 2006.
• Global Crossing Press Release
• Global Crossing Completes Upgrade on Trans-Atlantic Route
• VSNL Int. Map (Flash only)