Sorsogon-Samar Submarine Fiber Optical Interconnection Project (SSSFOIP)

Overview

The Sorsogon-Samar Submarine Fiber Optical Interconnection Project (SSSFOIP) is a domestic submarine cable system located entirely within the Philippines. Spanning 21 kilometres, it connects two points across the San Bernardino Strait, linking the Bicol Region on the island of Luzon with the island of Samar in Eastern Visayas. The cable serves an intra-national corridor rather than an international one, functioning as a regional link within the Philippine archipelago.

Route and Landings

The Philippines is the sole country on the route, with landing points at two locations. One terminal is situated at Allen, in Northern Samar. The other is at Santa Magdalena, in Sorsogon province on the southern tip of Luzon. These two landings anchor the cable across the narrow strait that separates the two islands.

Ownership and Operators

SSSFOIP is owned and operated by the National Grid Corporation of the Philippines (NGCP), the company responsible for operating the country's high-voltage electricity transmission network. The cable reflects NGCP's interest in establishing reliable communications infrastructure to support grid operations across geographically separated islands.

Status and Timeline

The cable became ready for service in 2019 and has been operational for approximately seven years. No end-of-service date has been announced.

Regional Context

The Philippines hosts a substantial number of submarine cables, with landings spread across dozens of coastal sites nationwide. SSSFOIP is distinctive within this environment due to its short length of 21 kilometres and its purely domestic scope. The regional peers that also land in the Philippines — including EAC-C2C, the Asia-America Gateway Cable System, JUPITER, and Bifrost — are international systems ranging from roughly 14,500 to 36,500 kilometres in length. SSSFOIP sits at the opposite end of the scale, purpose-built for a specific inter-island crossing rather than transoceanic connectivity. At 21 kilometres, it is shorter than all other cables sharing the same national corridor.

Strategic Role

SSSFOIP provides a direct fibre optic connection between Luzon and Samar, two islands separated by the San Bernardino Strait. By linking Allen and Santa Magdalena, the cable supports communications between the Bicol Region and Eastern Visayas. Owned by the national grid operator, it serves the specific operational and connectivity requirements of infrastructure management across the Philippine archipelago's fragmented geography.