Hawaiian Islands Fiber Link (HIFL)

Overview

The Hawaiian Islands Fiber Link (HIFL) is a domestic submarine cable system designed to enhance connectivity across the Hawaiian archipelago, United States. Spanning approximately 740 kilometers, HIFL is a compact, intra-state fiber-optic network that interlinks six islands within Hawaii. Unlike transoceanic cables that connect continents, HIFL focuses solely on providing robust inter-island communication infrastructure. The system is scheduled to be ready for service in 2026, addressing the unique connectivity needs of Hawaii's geographically dispersed communities.

HIFL is positioned to play a critical role in supporting Hawaii’s digital infrastructure by improving data transmission speeds and reliability between islands. Its deployment will enable better access to communication services for residents, businesses and institutions, ensuring that even the smaller and more remote islands are integrated into a high-capacity fiber network.

Route and Landings

The Hawaiian Islands Fiber Link has six landing points, all located within the state of Hawaii, United States. The cable connects Barber’s Point on Oahu, Hilo on the Big Island, Kahului on Maui, Kaunakakai on Molokai, Lihue on Kauai, and Manele Bay on Lanai. This configuration reflects the cable’s role as a dedicated inter-island network, ensuring that each major island in the Hawaiian chain is directly linked by high-speed fiber infrastructure.

Geographically, the cable traverses the Pacific Ocean waters surrounding the Hawaiian Islands, which are spread across approximately 2,400 kilometers of ocean. The landing points were strategically chosen to serve population centers and key economic hubs. For example, Barber’s Point on Oahu is near Honolulu, the state’s capital and largest city, while Hilo serves as a major urban center on the Big Island. Similarly, the landings at Kahului, Kaunakakai, Lihue and Manele Bay ensure connectivity for Maui, Molokai, Kauai and Lanai, respectively, islands that are vital to Hawaii’s tourism, agriculture and local economies.

Ownership and History

HIFL is jointly owned by Ocean Networks and the University of Hawai’i. This partnership highlights the dual-purpose nature of the cable: it is designed to serve both commercial and academic needs. Ocean Networks brings expertise in submarine cable deployment and operations, while the University of Hawai’i’s involvement underscores the cable’s role in supporting research and education initiatives across the state. By linking the islands with fiber-optic technology, HIFL is expected to facilitate academic collaboration, data-intensive research and digital learning opportunities for the university’s campuses and research facilities.

The cable was conceived to address Hawaii’s unique geographic challenges, where inter-island connectivity has historically relied on a mix of older submarine cables and satellite links. HIFL represents a significant upgrade, offering modern, high-capacity fiber-optic connectivity. The planned ready-for-service date of 2026 marks a milestone in the state’s digital infrastructure development, with deployment activities currently underway.

What Our Measurements Show

Our monitoring of the Hawaiian Islands Fiber Link will focus on its performance once operational, particularly in terms of latency, bandwidth capacity and reliability. The cable’s relatively short length of 740 kilometers suggests that it will deliver low-latency connections between the islands, a critical factor for applications such as real-time communication and cloud-based services. The design of the system, with six landing points, ensures redundancy and resilience, reducing the risk of service disruption for any single island.

Our probes will also evaluate how effectively HIFL supports the diverse needs of its users, from residential internet access to research data transfer. The cable’s strategic landings on smaller islands like Lanai and Molokai are expected to significantly improve connectivity for these less-populated areas, which have historically faced challenges in accessing high-speed internet. By bridging the islands with a modern fiber network, HIFL is poised to enhance digital equity across Hawaii, fostering economic growth and innovation throughout the state.