1.   He joined a small team that was landed by submarine on the islands off the coast of Thailand to monitor the Japanese fleet.

2.   The last serious naval infiltration occurred in September, when a North Korean submarine landed off the South Korean coast and more than two dozen spies sneaked ashore.

3.   A North Korean submarine briefly landed three espionage agents in South Korea before being captured last week, the Defense Ministry said Monday.

4.   The submarine landed the five spies Sunday and stayed in South Korean waters to pick them up two days later, the officials quoted the captive as saying.

5.   The submarine landed five spies Sunday and stayed in South Korean waters to pick them up two days later, the officials quoted the captive as saying.