Military officers and sailors stand in formation as the Chinese Navy "Peace Ark" hospital ship arrives in Port of Spain, Trinidad and Tobago, Nov. 8, 2011. The Chinese Navy "Peace Ark" hospital ship arrived in Trinidad and Tobago for a seven-day medical services and goodwill visit. (Xinhua/Zha Chunming) 

Overseas Chinese welcome the Chinese Navy "Peace Ark" hospital ship in Port of Spain, Trinidad and Tobago, Nov. 8, 2011. The Chinese Navy "Peace Ark" hospital ship arrived in Trinidad and Tobago for seven-day medical services and goodwill visit. (Xinhua/Zha Chunming)

Overseas Chinese welcome the Chinese Navy "Peace Ark" hospital ship in Port of Spain, Trinidad and Tobago, Nov. 8, 2011. The Chinese Navy "Peace Ark" hospital ship arrived in Trinidad and Tobago for a seven-day medical services and goodwill visit. (Xinhua/Zha Chunming)