The Coast Guard Administration (CGA) announced Thursday that two crewmen were killed and three others were injured two days earlier when their vessel sank off Oluanpi, Taiwan's southernmost tip. The three injured crewmen were saved by helicopters in a joint Taiwan-Japan rescue mission, while another 20 remained missing as the search and rescue mission continued, the CGA said. The 25-member crew was all Chinese, it added. The Panama-registered ship, carrying 55,000 tons of iron ore, went down in heavy seas 180 nautical miles southwest of Oluanpi, Pingtung County, while sailing from Indonesia to Lianyun Port in China's Jiangsu Province, the CGA said. 