Union Banks (; ; ) is a large drowned atoll in the center of Dangerous Ground in the Spratly Islands in South China Sea, west of the Philippine coast, containing islands and reefs whose ownership remains disputed and controversial. The closest atoll is Tizard Bank, due north of Union Banks. There are only two natural islands on the rim of the reef, Sin Cowe Island and Sin Cowe East Island.
The atoll is long from Johnson South Reef in the southwest to Whitson Reef in the northeast, and up to wide. Its total area measures . The central lagoon is up to deep.Atoll Area, Depth and Rainfall, rock.geosociety.org
Islands and reefs comprising Union Banks
Union Banks consists of the following islands and reefs, clockwise starting in the southwest corner:- Version dated 19 August 2011 is available at:
Key: yellow = occupied by PRC; violet = occupied by Vietnam Feature Location Johnson South Reef (Chìguā Jiāo) (Mabini Reef) (Đá Gạc Ma) Collins Reef/Johnson North Reef (Guǐhǎn Jiāo) (Roxas Reef) (Đá Cô Lin) Đá Tam Trung (Huá Jiāo) (Burunyugan 7 Reef) (Đá Nghĩa Hành) (Jíyáng Jiāo) (Burunyugan 6 Reef) (Đá Sơn Hà) Sin Cowe Island/Sinh Ton Island (Jǐnghóng Dǎo) (Rurok Island) (Ching-hung Tao) (Đảo Sinh Tồn) Đá Nhạn Gia --> (Nánmén Jiāo) (Burunyugan 5 Reef) (Đá Bình Khê) /Kennan Reef (Xīmén Jiāo) (Đá Ken Nan) Đá Bia Hughes Reef (Dōngmén Jiāo) (Tung-men Chiao) (Burunyugan 4 Reef) (Đá Tư Nghĩa) (Ānlè Jiāo) (Burunyugan 3 Reef) (Đá Bình Sơn) * (Chángxiàn Jiāo) (Burunyugan 2 Reef) (Đá Bãi Khung) (Zhǔquán Jiāo) (Burunyugan 1 Reef) (Đá Đức Hòa) * Whitsun Reef/Whitson Reef (Niúè Jiāo) (Julian Felipe Reef) (Đá Ba Đầu) (Rǎnqīngdōng Jiāo) (Burunyugan 15 Reef) (Đá An Bình) Grierson Reef/Sin Cowe East Island (Rǎnqīng Shāzhōu) (Jan-ch'ing Chiao) (Burunyugan 14 Reef) (Đảo Sinh Tồn Đông) (Lóngxiā Jiāo) (Burunyugan 13 Reef) (Đá Vị Khê) (Biǎncān Jiāo) (Burunyugan 12 Reef) (Đá Ninh Hòa) [Unnamed reef] (Burunyugan 11 Reef) (Zhāngxī Jiāo) (Burunyugan 10 Reef) (Đá Văn Nguyên) /Higgen Reef (Qūyuán Jiāo) (Burunyugan 9 Reef) (Đá Phúc Sĩ) Lansdowne Reef (Qióng Jiāo) (Burunyugan 8 Reef) (Chi'ung Chiao) (Đá Len Đao) Đá Trà Khúc -->
See also List of maritime features in the Spratly Islands
References