Kerch, Ukraine

How the Internet Reaches Kerch

Kerch is a city on the Kerch Peninsula in eastern Crimea, Ukraine, positioned at the narrow strait separating the Black Sea from the Sea of Azov. Its geography places it directly at a natural crossing point between Ukraine and Russia, and it is precisely this geographic position that defines how international internet traffic arrives here. Kerch is home to one submarine cable landing point, where a single undersea cable crosses beneath the Kerch Strait to connect Ukraine and Russia.

Ukraine hosts three submarine cable landing points in total, and Kerch is one of them. All international internet traffic arriving in Kerch via submarine cable flows through that single connection across the strait, making the Kerch Strait Cable the sole undersea link serving this city.

The Cable Serving Kerch

The Kerch Strait Cable is a 46 km submarine cable that entered service in 2014. It connects Kerch, Ukraine to Ilyich, Russia, running beneath the Kerch Strait. This relatively short cable serves a specific regional purpose: linking the Ukrainian side of the strait directly to Russian territory on the opposite shore. At 46 km, it is a short-haul crossing rather than a long-distance intercontinental route, designed to carry traffic across this narrow geographic chokepoint between the two countries.

Regional Context

Ukraine's submarine cable infrastructure consists of three cables landing at three separate points, with an average cable length of 481 km across the national network. Kerch is one of those three landing points. The other two are Odessa, on Ukraine's Black Sea coast to the west, and Osoviny, each also served by a single submarine cable. All three of Ukraine's submarine cable connections have been in service since 2014 at the earliest, reflecting a relatively recent development of the country's undersea cable infrastructure.

What This Means for Connectivity

Because Kerch is served by a single submarine cable, all international submarine traffic passing through this landing point flows exclusively through the Kerch Strait Cable. An outage or disruption to that cable would cut the city's only undersea link entirely. The cable connects Kerch directly to Russia via Ilyich, meaning the destinations reachable through this route are those accessible via the Russian side of the connection rather than through broader international cable networks landing elsewhere in Ukraine.

Kerch's situation — a single short-haul cable linking two countries across a narrow strait — illustrates how submarine cable infrastructure at certain locations reflects geography as much as demand. Understanding that Kerch's only undersea link is a 46 km bilateral crossing to Russia, rather than a connection to a wider multi-country cable system, is essential context for understanding the internet topology of eastern Crimea and the regional dynamics of Ukraine's broader submarine cable network.