SUBCO Announced Three New Subsea Hypercables
The infrastructure expansion aims to support surging AI data traffic across the Indo-Pacific by 2029.
Updated on Sept. 22, 2026 in Data Centers
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SUBCO has announced plans to install three new subsea hypercables, totaling more than 40,000km of infrastructure to connect Australia, Japan, Los Angeles, and Southeast Asia. These systems remain in the planning and announcement stage, with contracts expected to be in force by early 2027.
Why it matters
The rapid growth of AI model training and inferencing has created an urgent demand for higher-capacity, lower-latency subsea connectivity. This project represents a significant increase in trans-Pacific and regional bandwidth capacity designed to accommodate intensifying global AI data loads.
The expansion includes three distinct systems: the 9,500km APX North, the 10,000km APX East, and the 4,600km APX West. Each of these new subsea cables features 24 fibre pairs, providing a massive upgrade in throughput compared to existing regional systems.
The players
SUBCO
An established telecommunications infrastructure company specializing in the design and construction of complex subsea fibre-optic cable systems.
The details
The project will deploy subsea cables—long, insulated fibre-optic lines laid on the ocean floor to transmit data—utilizing specialized cable supply ships for installation. The APX North system links Sydney to Japan via Guam, while APX East bridges Guam to Los Angeles. APX West provides a 4,600km link from Perth to Singapore, including critical branches to Jakarta and Batam, Indonesia, to facilitate regional data routing.
Timeline
Early 2027: Contracts for the subsea infrastructure are expected to be in force.
2029: The planned completion date for all three new hypercables.
The Tech Race
This project follows a pattern established by prior trans-Pacific cable efforts but significantly scales the fibre pair count to meet current high-bandwidth requirements. It positions SUBCO to compete directly for the massive data-hauling contracts necessitated by next-generation AI infrastructure.
The increased bandwidth will primarily affect users of high-performance cloud computing services and large-scale AI platforms by 2029. Increased capacity across these routes will eventually lower latency for data-intensive applications and multinational enterprise networks throughout the Indo-Pacific.
The takeaway
The deployment of 40,000km of subsea cable signals a multi-year shift toward dedicated AI-driven connectivity across the Pacific. Stakeholders should monitor the formalization of contracts by early 2027 as a leading indicator of project viability and specific bandwidth allocation.
Further reading
For broader trends in global infrastructure, explore our coverage of Data Centers.
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