About Issue 54:

Welcome to the 54th edition of SubTel Forum’s Submarine Cable Almanac, a special SubOptic 2025 edition styled after our historical Submarine Cables of the World print map, which will be available to attendees of the conference. This issue features the latest updates on global submarine cable systems—4 new systems have been added and 10 have been updated—ensuring access to the most current industry data.

This Almanac issue organizes systems by geographic region, offering a clearer view of global connectivity trends and infrastructure distribution. By grouping systems regionally, readers gain insights into deployment priorities, regional bandwidth growth, and the evolving shape of the global network.

We appreciate Ocean Networks for exclusively sponsoring this issue, supporting continued research and industry insights. Check out details on their HIFL Cable System.

Updates? Contact Kieran Clark at [email protected].

Next Issue August 2025

About the Almanac

Your Guide to Submarine Cable Systems

The Submarine Telecoms Cable Almanac is a meticulously crafted reference, offering a comprehensive snapshot of over 500 current and planned domestic and international submarine cable systems. More than just raw data, it provides in-depth analysis, trends, and insights, making it an essential tool for industry professionals, researchers, and those curious about the undersea world of cables.

How the Almanac is Created

Our data-driven approach ensures the Almanac remains accurate and up to date. We continuously gather information from public, commercial, and scientific sources while leveraging our proprietary Submarine Cable Database. Through expert interviews and ArcGIS Pro mapping, we provide visually consistent representations of global submarine cable infrastructure.

Advertise in the Almanac

Looking to reach a specialized audience in the submarine cable industry? The Almanac provides a unique platform for advertisers to connect with key decision-makers and industry leaders. With various advertising options tailored to your needs, we can help you achieve your marketing goals. Contact us today to explore advertising opportunities.