North Korea occupies the northern portion of the Korean Peninsula which extends about 1,000 kilometres (620 mi) southward from the northeast Asian continental landmass. The 8,460 kilometres (5,260 mi) coastline of Korea is highly irregular, and North Korea accounts for 2,495 kilometres (1,550 mi) of this, roughly one-third. To the west of North Korea are the Yellow Sea and Korea Bay, and to its east lies Japan across the Sea of Japan (East Sea of Korea). Most of the islands of North Korea are on its west coast.
According to the Constitution of the Republic of Korea, its territory consisting of "the Korean Peninsula and its adjacent islands,"[1] which in turn, all of the islands are wholly claimed by the ROK.
Ŏjŏkto (어적도 Eojeokdo; 於赤島) (Ŭiju County) - reclamation of the former Sŭngado (승아도 Seung'ado; 勝阿島; written Sŭngaedo [승애도 Seung'aedo; 勝艾島] on a 1917 map)
Pidansŏm (비단섬 Bidanseom; 緋緞島 Bidando) (Sindo County) — formed by a 1958 reclamation project from Sindo (신도; 薪島) and Maando (마안도; 馬鞍島); Maando is the westernmost point in Korea
Ryuch'odo (류초도 Ryuchodo; 柳草島) (Sinŭiju City)
Sugudo (수구도; 水口島) (Ŭiju County)
Tajido (다지도 Dajido; 多智島) (Ŭiju County) — formed by a reclamation project from Kŏmdongdo (검동도; 黔同島), Nanjado (난자도; 欄子島), Tajido (다지도; 多智島), Mado (마도; 麻島)