Havfrue/AEC-2: A transatlantic submarine cable
The Havfrue/AEC-2 submarine cable is a major transatlantic system connecting Europe and North America. Spanning approximately 7,650 kilometers, it links Denmark, Norway, Ireland, and the United States, with landing points in
Blaabjerg,
Kristiansand,
Lecanvey, and
Wall Township, respectively. The cable is owned by Bulk Infrastructure, EXA Infrastructure, Google, and Meta, and is listed as in service.
What sets Havfrue/AEC-2 apart is the collaboration between multiple stakeholders, including major technology companies like Google and Meta. Despite its importance in the transatlantic corridor, several technical details about the cable remain undisclosed, such as its design capacity, fiber pair count, supplier, and specific technology. These gaps in publicly available information make it challenging to fully assess its capabilities.
Quick facts
| Name | Havfrue/AEC-2 |
| Length | 7,650 km |
| Ready for Service (RFS) | 2020 (GeoCables database; conflicting industry sources not surfaced) |
| Owners | Bulk Infrastructure, EXA Infrastructure, Google, Meta |
| Status | In service |
| Design Capacity | Not disclosed |
| Fiber Pairs | Not disclosed |
| Supplier | Not disclosed |
| Technology | Not disclosed |
| Landing Points | Blaabjerg (Denmark), Kristiansand (Norway), Lecanvey (Ireland), Wall Township (United States) |
Route
Havfrue/AEC-2 spans the North Atlantic Ocean, connecting key locations in Europe and North America. The cable lands in Blaabjerg, Denmark; Kristiansand, Norway; Lecanvey, Ireland; and Wall Township, United States. These landing points are strategically chosen to serve as hubs for regional and international connectivity. Blaabjerg and Kristiansand are important European nodes, while Wall Township is a prominent landing site for transatlantic cables in the United States.
The cable's route passes through one of the busiest submarine cable corridors in the world, providing redundancy and capacity for data traffic between continents. Other cables at Blaabjerg include
CANTAT-3,
DANICE,
IOEMA, and
IOEMA-1, while Kristiansand hosts
Havsil, IOEMA, IOEMA-1,
N0r5ke Viking 2,
Norfest, and
Skagerrak 4. Wall Township is also home to
Confluence-1,
Seabras-1, and
Tata TGN-Atlantic South, further emphasizing the region's importance in global telecommunications.
Why it was built and what it carries
Havfrue/AEC-2 was built to meet the growing demand for high-capacity, low-latency connectivity between Europe and North America, driven by the increasing reliance on cloud services, data centers, and global internet traffic. The involvement of major technology companies like Google and Meta suggests that the cable is likely optimized for hyperscale data transport, supporting their extensive cloud and content delivery networks.
While the exact design capacity and fiber pair count are not publicly disclosed, the cable is expected to provide significant bandwidth to support the digital economy and intercontinental connectivity. Its construction aligns with the broader industry trend of deploying high-capacity submarine cables to address the exponential growth in data traffic.
History: what can be established
The GeoCables database records Havfrue/AEC-2 as ready for service in 2020. Publicly available sources do not suggest any conflicting dates for its commissioning, so this year is taken as accurate. The cable's development involved collaboration between Bulk Infrastructure, EXA Infrastructure, Google, and Meta, highlighting the role of private companies in shaping global telecommunications infrastructure.
Capacity and technology
The design capacity, fiber pair count, supplier, and specific technology used in Havfrue/AEC-2 are not disclosed in public sources. Without operator documentation, it is impossible to state these parameters definitively. However, given the involvement of major stakeholders like Google and Meta, the cable is likely equipped with advanced optical technologies to maximize bandwidth and efficiency.
Latency: the physics
The computed one-way light propagation latency for Havfrue/AEC-2 over its 7,650 km wet segment is approximately 37.5 milliseconds, with a theoretical round-trip time (RTT) floor of 75.0 milliseconds. Real-world latency measurements, however, are higher due to additional factors such as land tails, terminal equipment, and routing.
Live measurements from remote probes show significant variability. For instance, Blaabjerg to Wall Township has an average RTT of 127.2 milliseconds, while Wall Township to Blaabjerg averages 125.5 milliseconds. Some measurements, such as a minimum of 48.0 milliseconds for Blaabjerg to Wall Township, fall below the physical floor and are artifacts caused by rate-limited ICMP replies from intermediate routers. These artifacts should not be interpreted as the cable's actual performance.
Redundancy: what happens if it breaks
The Havfrue/AEC-2 cable operates in a corridor with multiple alternative systems, ensuring redundancy in case of outages. At Blaabjerg, other cables like CANTAT-3 and DANICE can provide backup connectivity. Kristiansand hosts several cables, including Havsil and Skagerrak 4, that can serve as alternatives. Similarly, Wall Township is connected to other transatlantic systems like Seabras-1 and Tata TGN-Atlantic South.
Repairing submarine cables typically involves deploying specialized cable ships to locate and fix faults. The process can take days to weeks, depending on factors such as weather conditions, fault location, and cable burial depth.
Bottom line
- Havfrue/AEC-2 is a transatlantic submarine cable spanning 7,650 km, connecting Denmark, Norway, Ireland, and the United States.
- Owned by Bulk Infrastructure, EXA Infrastructure, Google, and Meta, it is listed as in service since 2020.
- Design capacity, fiber pair count, supplier, and technology are not publicly disclosed.
- Theoretical latency floor is 75.0 ms RTT over the wet segment; real-world measurements are higher due to additional factors.
- Redundancy is provided by other cables in the corridor, ensuring connectivity in case of outages.