Hawaii Island Fibre Network (HIFN)

Overview

The Hawaii Island Fibre Network (HIFN) is a domestic submarine cable system that connects multiple islands within the Hawaiian archipelago, all part of the United States. Spanning 529 kilometers, the cable plays a critical role in linking communities across six major islands: Oahu, Maui, the Big Island of Hawaii, Kauai, Lanai, and Molokai. Operational since 1997, HIFN facilitates intra-island telecommunications, providing essential infrastructure for connectivity in a region where terrestrial alternatives are limited by the oceanic geography. The system ensures reliable communication and data transfer within the state of Hawaii, supporting both local residents and businesses.

HIFN is a vital component of Hawaii's telecommunications framework, bridging the physical gaps between islands and enabling seamless communication. Its design and operation reflect the unique geographic challenges of an island state, where undersea cables are indispensable for maintaining robust and efficient connectivity. The network's relatively short length compared to transoceanic systems highlights its specific focus on regional connectivity rather than international data traffic.

Route and Landings

The Hawaii Island Fibre Network connects seven landing points distributed across six islands in the Hawaiian archipelago, all within the United States. On Oahu, the cable lands at two locations: Koko Head on the eastern side and Makaha on the western side. The island of Maui is served by a landing at Kihei, a town on its southwestern coast. The Big Island of Hawaii, the largest in the chain, is connected via a landing at Kawaihae, a port town on its northwestern shore. Kauai, the northernmost major island, is linked through a landing at Lihue, its principal town and commercial center. The smaller islands of Lanai and Molokai are reached at Manele Bay and Kaunakakai, respectively.

This configuration ensures comprehensive coverage of Hawaii's primary islands, enabling efficient inter-island communication. The cable's route traverses the Pacific Ocean's shallow and deep waters, navigating the volcanic topography of the Hawaiian Ridge. By connecting these diverse locations, HIFN supports the flow of telecommunications traffic across the state, bypassing the need for satellite links or reliance on external cable systems.

Ownership and History

The Hawaii Island Fibre Network is jointly owned by Hawaiian Telcom and Lumen. Hawaiian Telcom is the leading telecommunications provider in the Hawaiian Islands, offering a range of services tailored to the unique needs of the local population. Lumen, previously known as CenturyLink and Level 3 Communications, is a major U.S.-based network operator with extensive domestic and international infrastructure. This partnership combines local expertise with national-scale resources, ensuring the cable's operational reliability and integration with broader telecommunications networks.

HIFN was ready for service in 1997, marking a significant milestone in Hawaii's telecommunications history. By providing a dedicated undersea link for intra-island communication, the cable has played a key role in the state's economic and social development. Its construction addressed the challenge of connecting a geographically dispersed population spread across multiple islands, where terrestrial networks are not feasible.

What Our Measurements Show

Our monitoring indicates that the Hawaii Island Fibre Network continues to perform reliably, maintaining stable data transmission across its 529-kilometer length. The cable's design and engineering have ensured resilience against the unique challenges posed by its location, including seismic activity and potential undersea volcanic disturbances. The system's multiple landing points allow for redundancy and flexibility, minimizing the risk of service disruptions even in the event of localized issues.

Probes have shown that the cable's performance metrics, including latency and bandwidth capacity, remain consistent with its original design specifications. This stability is critical for supporting Hawaii's telecommunications needs, from internet access and phone services to government and emergency communications. By facilitating efficient data transfer between islands, HIFN continues to be a cornerstone of Hawaii's digital infrastructure, underscoring its importance in connecting the state's communities and integrating them into the broader U.S. telecommunications network.