Protests erupted outside Beijing’s embassy in Seoul on Tuesday after one South Korean Coast Guard officer was killed and another wounded while intercepting an illegal Chinese fishing boat on Monday . . . the captain of the boat allegedly stabbed the two officers after they attempted to seize the boat and detain the crew . . . the Coast Guard had to use tear gas and rubber bullets on another boat of Chinese fishermen in October who were armed with clubs and shovels . . . around 430 Chinese ships have been seized for illegal fishing in the Yellow Sea this year, with arrests and detentions increasing about 25 percent from last year . . . the region the boats have been seized is part of South Korea’s exclusive economic zone and is rich in crabs and anchovies . . . the Chinese government offered a muted apology for the death of the coast guard officer . . . Seoul is expected to add additional funding, ships, and manpower to its Coast Guard as it toughens its response to illegal fishing by Chinese vessels . . . the government may pursue homicide charges against the captain, who has claimed innocence . . . strained relations with Beijing could prompt South Korean President Lee Myung-bak to reconsider a planned visit to China next month.