Hat Island, WA, United States

Hat Island, WA: Submarine Cable Landing Point

Hat Island is a landing point located in Washington State, on the Pacific coast of the United States. As an island location, it connects to the broader submarine cable network through a short intra-national link. One submarine cable lands at Hat Island, the Whidbey Island–Hat Island cable, which runs between two points within the United States. This cable represents a domestic, inter-island connection rather than an intercontinental or transoceanic corridor.

The cable landing at Hat Island is among the shorter submarine links recorded in the United States network, reflecting its role as a local connectivity solution rather than a long-haul international route. The connection links Hat Island to Whidbey Island, both located within Washington State, supporting localized data and communications traffic across a narrow stretch of water.

Cables Landing at Hat Island

The Whidbey Island–Hat Island cable is the single submarine cable landing at Hat Island. Measuring 4 km in length, it is one of the shortest submarine cable segments recorded in the United States. The cable reached ready-for-service status in 1999 and connects Hat Island exclusively to Whidbey Island, another landmass within Washington State. Both endpoints of this cable are located within the United States, making it a purely domestic intra-island link.

Regional Context

Within the United States submarine cable landscape, Hat Island sits at the modest end of the scale by cable count. The country hosts 113 submarine cables across 160 landing points, with major hubs such as Boca Raton, FL and San Juan, PR each landing eight cables, and sites like Hermosa Beach, CA, Kapolei, HI, and Myrtle Beach, SC hosting five cables each. With a single cable, Hat Island ranks in the top 69% of United States landing points by cable count, reflecting its role as a local terminus rather than a multi-cable hub.

Network Role

Hat Island functions as a single-cable terminus, providing a submarine link between Hat Island and Whidbey Island within Washington State. At just 4 km, the Whidbey Island–Hat Island cable addresses a local connectivity need, bridging two island communities across a short marine gap. This type of short domestic link plays a distinct role within the broader United States submarine cable inventory, which has an average cable length of 4,957 km, underscoring just how localized the Hat Island connection is by comparison.

In the wider submarine cable graph, Hat Island represents a category of landing point that ensures basic island-to-island connectivity within a single country, complementing the major international corridors that define the United States' global cable network.