North Danger Reef

North Danger Reef (11°25′N 114°21′E / 11.417°N 114.350°E / 11.417; 114.350Coordinates: 11°25′N 114°21′E / 11.417°N 114.350°E / 11.417; 114.350) is one of the seven major reefs / banks / etc. in the Spratly Islands area of the South China Sea. It is the most North Western of the features of the Spratly Islands, located to the NW of Dangerous Ground.

The reef is a large (8.5 nautical miles) approximately circular atoll with a central lagoon (~20m deep) circled by a number of features.

Features of North Danger Reef

Landsat 7 image (2000)

Nautical chart (1911)

Commencing in the NE and travelling anti-clockwise to the SW:

• North Reef (11°28′N 114°23′E / 11.467°N 114.383°E / 11.467; 114.383)
  • North Pass
• Northeast Cay (11°27′N 114°21′E / 11.450°N 114.350°E / 11.450; 114.350) - light on NE side
• Shira Islet
  • Middle Pass
• Southwest Cay (11°26′N 114°20′E / 11.433°N 114.333°E / 11.433; 114.333) - marked by a light
  • West Pass - N
• Jenkins Patches
  • West Pass - S
• South Reef (11°23.3′N 114°17.9′E / 11.3883°N 114.2983°E / 11.3883; 114.2983) - SW of the Reef
  • South Pass

Continuing anti-clockwise to the East and NE:

• Sabine Patches
• Farquharson Patches
  • East Pass
• Day Shoal - NE of reef
• Iroquois Ridge - central N of reef

See also

• List of maritime features in the Spratly Islands

References

• US NGA (15 Nov 2014). "Pub. 161, Sailing Directions (Enroute) South China Sea and the Gulf of Thailand, Fifteenth Edition, 2014" (PDF). msi.nga.mil. pp. 8–9, (Sections 1.21 & 1.22).
• NGA Chart 93044 shows the area NW of Dangerous Ground
• NGA Chart 93042 shows the detail of North Danger Reef