In addition to the naval fortifications, there is also a lighthouse built in 1994 located near Da Tay B Islets (geographic coordinates recorded at the light station are 8°50′41″N 112°11′42″E / 8.84472°N 112.19500°E / 8.84472; 112.19500).

There is an underground tank right under the membrane house floor to collect all rainwater at the roofs and concrete roads to store for irrigation of vegetables and livestock.

West Reef East Island has a lock of about 16.5 hectares that can accommodate about 200 fishing boats to avoid storms safely.

[12] On West Reef East Island, there is "House of Great Unity of Vietnamese Ethnic Groups" built in 2019.

On December 2, 1987, the HQ-604 ship of the 125th Brigade brought the marines and engineers along with materials to build a class-3 house on West London Reef (Da Tay B Islets).