The Sierra Madre, deliberately marooned by the Philippines in 1999, is crumbling but repair is being made impossible by an effective blockade by Beijing

It is perhaps the most unlikely kind of military base. For more than two decades, a second world war-era ship, BRP Sierra Madre, has stood deliberately grounded in the remote, shallow waters of the fiercely contested South China Sea, carrying the Philippine flag and guarding against Chinese expansion.

But its future is increasingly precarious, and the ship has become a growing flashpoint in one of the world’s most disputed waters.

Latest in long history of nautical intimidations by Beijing, which lays unrecognised claim to almost all of the South China Sea

The Philippines has accused China’s coast guard of firing water cannon at its vessels in the disputed South China Sea, describing it as illegal and dangerous.

The Philippine coast guard said its vessels had been carrying food, water, fuel and other supplies for Filipino military personnel stationed at Second Thomas Shoal in the Spratly Islands on Saturday.

The Philippines accused a Chinese coastguard ship of directing a ‘military-grade laser light’ at one of its vessels, temporarily blinding a crew member

Philippine president Ferdinand Marcos has summoned the Chinese ambassador to express serious concern over the “increasing frequency and intensity of actions” by China against Philippine vessels.

The meeting came a day after the Philippines accused a Chinese coastguard ship of directing a “military-grade laser light” at one of its vessels, temporarily blinding a crew member and disrupting a mission in the South China Sea.

Philippines coastguard says crew member temporarily blinded and mission disrupted in South China Sea

The Philippines has accused a Chinese coastguard ship of directing a “military-grade laser light” at one of its vessels, temporarily blinding a crew member and disrupting a mission in the South China Sea.

The Chinese ship shone a green laser light twice towards the boat as it sought to deliberately block a resupply mission, the Philippine coastguard said. It also accused the Chinese vessel of making “dangerous manoeuvres by approaching about 150 yards from the vessel’s starboard quarter”.