The South China Sea is a major world shipping route bordered by a number of countries including China, the Philippines, Taiwan, Malaysia, all of whom have staked claims to various zones in this vast expanse of water.

But tensions have grown in recent years between China who claim the majority of the South China Sea for themselves and the Philippines. Lately these tensions have escalated into a series of dangerous encounters as the two countries seek to enforce their right to disputed reefs and outcrops in these contested waters.

At the heart of this particular dispute lies a rusting warship, which belongs to the Philippine navy. It has been berthed on a submerged reef, the Second Thomas Shoal, since 1999, an outpost that the Philippine government claim belongs to them. The Sierra Madre is manned by a small Filipino crew who need a continual supply of provisions from the mainland, but the supply ships are encountering increasingly dangerous stand-offs with the Chinese coast guard in the South China Sea. The Chinese claim these encounters are just aimed at blocking an ‘illegal transportation’ of supplies. But there are concerns that this regional dispute could spark a wider conflict between China and the US, who are treaty-bound to come to the defence of the Philippines, should it come under attack.

So, on this week’s Inquiry, ‘What can a rusting warship tell us about tensions in the South China Sea?’

Contributors: Dr Hasim Turker, independent researcher, Istanbul, Turkey Professor Steve Tsang, director SOAS China Institute, London Professor Jay Batongbacal, director, Institute for Maritime Affairs and Law of the Sea, U.P. Law Centre, Philippines Gregory Poling, director South East Asia Programme and the Asia Maritime Transparency Initiative, Centre for Strategic and International Studies, USA Presenter: Tanya Beckett Producer: Jill Collins Researcher: Katie Morgan Technical producer: Richard Hannaford Production co-ordinator: Tim Fernley Editor: Tara McDermott

(Photo: The Philippine ship BRP Sierra Madre in the disputed Second Thomas Shoal in the South China Sea. Credit: Lisa Marie David/Getty Images)