[1/2] A Philippine flag flutters onboard the BRP Sierra Madre, a marooned transport ship which Philippine Marines used as a military outpost, in the disputed Second Thomas Shoal, part of the Spratly Islands in the South China Sea March 30, 2014. REUTERS/Erik De Castro/File PhotoPUERTO PRINCESA, Philippines Aug 11 (Reuters) - The Philippines is looking at several options to strengthen its hold on the disputed Second Thomas Shoal in the South China Sea including refurbishing a grounded and rusting warship it uses as a military outpost, a move that would likely anger Beijing. The Philippines intentionally grounded the World War Two-era warship Sierra Madre in 1999 as part of its sovereignty claim to the Second Thomas Shoal, which lies within its exclusive economic zone, and rotates a handful of troops through the ship. China has urged the Philippines to fulfill a "promise" to tow away the grounded vessel, but Manila denied striking any agreement to abandon the shoal, which it calls Ayungin. The Philippines won an international arbitration award in 2016 against China's South China Sea sovereignty claim, after a tribunal ruled Beijing's sweeping claim had no legal basis, including at the Second Thomas Shoal.

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Persons: Thomas Shoal, Erik De Castro, Alberto Carlos, Romeo Brawner, Thomas, Ayungin, Carlos, Ramsey Gutierrez, Gutierrez, Karen Lema, Michael Perry Organizations: flutters, BRP, BRP Sierra Madre, Philippine Marines, REUTERS, Philippine Western Command, Chinese Coast Guard, Philippines, China's, Thomson Locations: BRP Sierra, Spratly, South, PRINCESA, Philippines, South China, Beijing, Sierra, China, Manila, Japan, France, South Korea, United States, Philippine, Thomas Shoal . China, Vietnam, Malaysia, Brunei, Indonesia