Subco Announces Three Indo‑Pacific Hypercables to Support Rising AI Traffic

# What Subco announced Subco, an Australia‑based subsea operator, announced three new Indo‑Pacific hypercable projects aimed at handling rising AI, cloud, and VoIP traffic. The systems are named APX North, APX‑2, and APX West. Subco plans for all three to enter service by 2029 and is finalizing cable supplier and vessel arrangements, with contracts expected to be in force by early next year.

# Why Subco is building them AI workloads and large cloud services are increasing demand for international bandwidth and low‑latency routes between data centers and end users. Subco says data centers need stronger international routes and AI applications need faster paths between compute hubs. The announced designs and routes reflect those needs: long‑haul trans‑Pacific capacity, direct Australia‑Japan links, and tighter regional connectivity within Southeast Asia.

# Route and design highlights

• APX‑2: roughly 10,000 km connecting Australia and Japan to Los Angeles via Guam. Subco positions this as a vital trans‑Pacific backbone for Asia‑US traffic and for diverse connectivity when combined with APX North.

• APX West: about 4,600 km linking Perth to Singapore, with branches to Jakarta and Batam in Indonesia. This route is designed to strengthen regional redundancy and reflects Indonesia's growing significance in digital infrastructure.

All three systems use a 24 fiber‑pair design, which provides scalable capacity and options for dedicated or switched service across fiber pairs.

# Technical and operational context Subsea projects of this scale combine cable design, supplier selection, marine logistics, permitting, and multilateral operational coordination. Subco has not yet announced cable manufacturers or specific laying vessels. The switched branching units in APX North indicate an emphasis on flexible fiber‑pair routing rather than a single static path.

# Related network activity Other operators and vendors are investing to expand capacity and speed for AI and cloud traffic. FLAG announced an upgrade of a dedicated fiber pair on the Echo cable using Ciena WaveLogic 6 Extreme coherent optics to support 400GbE and 800GbE services between Asia and North America. XLSmart is constructing the Candle cable, an 8,000 km system linking Japan and Singapore while also connecting Taiwan, the Philippines, Indonesia, and Malaysia.

# Practical implications for carriers and data centers The announced routes target three carrier needs: lower trans‑Pacific latency, more route diversity between Australia and Asia, and stronger regional redundancy in Southeast Asia. Carriers and cloud operators looking to support high‑volume AI traffic should expect additional capacity options by 2029, subject to Subco's contracting and regulatory progress. Permitting complexity across multiple jurisdictions and the timeline for cable supply and construction remain the primary variables.

# Bottom line Subco's three‑cable plan maps to current demand drivers in AI and cloud networking: more capacity, lower latency, and greater routing diversity between Australia, Japan, Southeast Asia, Guam, and the US. The technical designs emphasize scalable fiber‑pair capacity and configurable branching, but delivery depends on finalized supply contracts, vessel availability, and cross‑border permitting before construction can start.