Parangcho

Parangcho, also known as Dingyan Islet , is a disputed submerged reef about 4.5 km from Socotra Rock in the Yellow Sea. The reef is about 372 m long by 169 m wide and 24 - 27 m below the surface.

In 1999, the reef was named Dingyan Islet by China.

In 2006, it was named Parangcho by the South Korean government. The South Korean Ministry of Maritime Affairs and Fisheries has stated that it will seek to register the reef's name with global organizations and for maps.