Mamu: A Quiet Link in China's Submarine Cable Network
Mamu, China, is a lesser-known landing point in the country's vast submarine cable infrastructure. Hosting just one cable, the
Ningbo-Zhoushan Cable, Mamu stands in contrast to more prominent hubs like Chung Hom Kok and Tseung Kwan O, which each support six cables. Despite its modest role, Mamu plays an important part in regional connectivity, linking the nearby point of
Xiepu via a short 35 km stretch of fiber.
The Ningbo-Zhoushan Cable: A Local Connection
The Ningbo-Zhoushan Cable, operational since 1999, is purely domestic, connecting Mamu to Xiepu, another landing point in China. Unlike international cables that span continents, this cable focuses on stitching together local networks within the country. It provides a reliable pathway for data to flow between these two points, contributing to the broader national infrastructure that supports China's digital economy.
While the cable might not boast the length or international reach of others landing in China-such as those at
Chongming or Nanhui-it serves a specific purpose: ensuring regional connectivity in eastern China. This localized focus is reflected in its relatively short length of 35 km, making it one of the shortest submarine cables in the country.
Latency Insights: Mamu's Performance
GeoCables' own latency measurements reveal interesting details about Mamu's connectivity. Across 31 completed checks from nine source cities, the average round-trip latency to Mamu is 229 ms, with the best observed latency being 69 ms. These figures suggest stable performance for a domestic cable, though Mamu's latency is higher than what might be expected from larger hubs with more extensive infrastructure.
Positioning Mamu Among China's Landing Points
China's submarine cable landscape includes 24 landing points hosting a total of 24 cables. Mamu, with its single cable, ranks in the top 63% of landing points by cable count. While it doesn't compete with major hubs like Chung Hom Kok or Tseung Kwan O, Mamu's role is more focused and localized. This specialization highlights the diversity of China's cable infrastructure, where some points serve as international gateways while others, like Mamu, cater to regional needs.
A Modest Yet Meaningful Role
Mamu may not be a bustling hub of submarine cable activity, but its connection to Xiepu via the Ningbo-Zhoushan Cable ensures that eastern China remains well-connected. In a country where cables average over 10,000 km in length, Mamu's 35 km link might seem minor-but it plays its part in the intricate web of domestic connectivity that supports China's digital infrastructure.