Mamu, China

Mamu, China: Submarine Cable Landing Point

Mamu is a submarine cable landing point located in China. As a coastal landing site, it serves as a terminus for undersea cable infrastructure connecting points within Chinese territory. One submarine cable lands at Mamu, making it a single-cable landing point within China's broader network of 24 submarine cable landing points spread across the country.

The cable landing at Mamu facilitates a domestic intra-national connection, linking locations within China rather than spanning international corridors. This positions Mamu as a domestically oriented landing point, supporting regional connectivity between Chinese coastal and island communities rather than providing intercontinental reach.

Cables Landing at Mamu

The Ningbo-Zhoushan Cable is the sole submarine cable landing at Mamu. Spanning 35 kilometres, this cable reached ready-for-service (RFS) status in 1999 and carries a draft status designation. Both endpoints of the Ningbo-Zhoushan Cable are located within China, confirming its role as a domestic intra-country link. The cable's relatively short length of 35 kilometres reflects its function as a nearshore or inter-island connection between points in the Ningbo-Zhoushan area of coastal China.

Regional Context

Among China's 24 submarine cable landing points, Mamu ranks in the top 63 percent by cable count, hosting one cable. This places it alongside the lower end of China's landing point hierarchy, well behind major hubs such as Chung Hom Kok and Tseung Kwan O, each of which hosts six cables, and Chongming and Nanhui, each hosting four. Compared to peers such as Lantau Island, which also hosts two cables, Mamu's single-cable footprint reflects a more focused, localised role within China's submarine cable geography.

Network Role

Mamu functions as a single-cable terminus rather than a multi-cable hub, with its connectivity entirely directed at domestic Chinese destinations via the Ningbo-Zhoushan Cable. The 35-kilometre cable length suggests this landing point serves a specific short-haul coastal or inter-island connectivity purpose within the Ningbo-Zhoushan region, distinct from the longer international cables—averaging over 10,800 kilometres—that characterise much of China's submarine cable portfolio.

Within China's submarine cable graph, Mamu represents a specialised domestic node that complements the country's larger international-facing landing points. Its presence highlights that not all landing points within a major cable nation serve global corridors; some address targeted local or regional connectivity requirements, filling gaps that terrestrial infrastructure alone may not efficiently serve.