Mischief Reef
Concerns about the Chinese incursion to the sea features claimed by the Philippines and other Southeast Asian states were arises after the Chinese construction of a military outpost at the Mischief Reef on 1995. As a response, the Philippine Navy dispatched the BRP Sierra Madre and deliberately ran it aground in the Second Thomas Shoal, 5 miles from the Chinese facility and south of the rumored oil-rich Reed Bank, which it maintains as its own station today.