Germany's key submarine fiber optic landing point is in Wilhelmshaven, connected via the IOEMA cable system, with additional terrestrial networks mapped through SEFE.

IOEMA Submarine Cable System

The IOEMA (Internet-Operator-Europe-Midwest-America) submarine cable is a high-capacity fiber optic system connecting five northern European countries: the UK, the Netherlands, Germany, Denmark, and Norway . In Germany, the cable lands at Wilhelmshaven, Lower Saxony, marking the first direct North Sea landing in over 25 years since the decommissioning of TAT-14 . The system consists of a trunk route from Dumpton Gap, UK, to Kristiansand, Norway, with branches to Eemshaven (Netherlands), Wilhelmshaven (Germany), and Blaabjerg (Denmark), . The IOEMA cable is fully armored and buried at an average depth of 1.5 meters, with coastal sections buried up to 3 meters to protect against anchors, fishing, and potential sabotage . It supports 48 fiber pairs with a minimum system capacity of 1.3–1.5 petabits per second, enabling extremely high-speed data transmission . The system also connects to major transatlantic crossings like Havfrue (Denmark) and Leif Erikson (Norway), integrating Germany into broader global internet infrastructure .

Terrestrial Fiber Optic Networks

Germany's domestic fiber optic infrastructure is mapped through networks like SEFE, which provides an interactive visualization of fiber routes across cities, districts, and regional connections . These terrestrial networks interconnect with submarine landing points, ensuring redundancy and secure routing for critical communications. SEFE allows users to explore detailed routes, including city-level connections, which are essential for understanding the physical backbone of Germany's internet.

Security and Strategic Considerations

Security is a major focus for both submarine and terrestrial fiber networks in Germany. The IOEMA cable's armoring and burial depth are designed to prevent physical interference and potential espionage . The strategic placement of landing points like Wilhelmshaven ensures Germany remains connected to Northern Europe and transatlantic networks, reducing reliance on older or indirect routes . Observations of spy ships in the North Sea have heightened awareness of the need to protect these critical infrastructures .

Summary

Germany's fiber optic connectivity relies on a combination of submarine cables like IOEMA and domestic terrestrial networks such as SEFE. Wilhelmshaven serves as the primary North Sea landing point, linking Germany to Northern Europe and transatlantic systems. The infrastructure is designed with high security, redundancy, and capacity, reflecting its strategic importance for both commercial and national security purposes .