Port Antonio, Jamaica

Port Antonio, Jamaica: Submarine Cable Landing Point

Port Antonio is the capital of the parish of Portland, situated on the northeastern coast of Jamaica approximately 100 kilometres from Kingston. As a coastal town and one of the island's significant ports, Port Antonio serves as a landing point for international submarine cable infrastructure connecting Jamaica to neighbouring territories in the Caribbean. One submarine cable lands at Port Antonio, linking Jamaica directly to the Cayman Islands via an undersea connection that spans the western Caribbean corridor.

The single cable landing here, the Cayman-Jamaica Fiber System, establishes a direct inter-island link between Jamaica and the Cayman Islands. This places Port Antonio within the broader Caribbean regional submarine cable network, contributing to connectivity between two British Overseas Territory and independent island jurisdictions in the northwest Caribbean Sea.

Cables Landing at Port Antonio

The Cayman-Jamaica Fiber System (CJFS) is the sole submarine cable landing at Port Antonio. Spanning approximately 1,197 kilometres, this cable reached ready-for-service status in 1997, making it among the earliest submarine cable deployments in Jamaica. The CJFS connects Jamaica and the Cayman Islands, forming a direct bilateral link between these two island destinations across the Caribbean Sea. Its 1997 commissioning date coincides with the earliest recorded submarine cable deployment in Jamaica's national cable history.

Regional Context

Within Jamaica's submarine cable geography, Port Antonio is one of seven landing points distributed across the island. Bull Bay and Montego Bay each host four cables, while Ocho Rios serves three, making them the more densely connected landing points in the country. Port Antonio shares its single-cable status with Black River, Copa Club, and Harbour View, positioning it among the smaller landing points in the Jamaican submarine cable network by cable count.

Network Role

Port Antonio functions as a single-cable terminus rather than a multi-cable hub, hosting the CJFS as its exclusive submarine connection. Through this cable, Port Antonio enables a direct inter-island route between Jamaica and the Cayman Islands, a corridor that represents one of several bilateral Caribbean links within Jamaica's national cable infrastructure. The cable's 1997 ready-for-service date means this landing point has been part of Jamaica's connected submarine network since its earliest phase.

With Jamaica's overall submarine cable infrastructure comprising six cables across seven landing points, Port Antonio's role is that of a specialised terminal node serving a specific inter-island route. Its presence in the northeastern corner of Jamaica, geographically distinct from the more heavily cabled landing points elsewhere on the island, reflects the distributed nature of Jamaica's approach to submarine cable landing infrastructure across its coastline.