this month is the third anniversary

26 this month is the third anniversary of the cheonan incident. 17. South Korea's yonhap news agency quoted some south Korean military officer as saying that south Korean troops are ready to deal with north Korea "provocation", "occupation" such as the north, the south island west coast of the Korean peninsula.

"Attacks by north Korea's military might, it is the biggest concern," a south Korean military officer said.

These officers believe that north Korea's submarine force action and coastal artillery training increased, may strengthen the secret of infiltration. Since last year, they say, the north land, sea and air forces improved amphibious training, focus on against the west coast of the Korean peninsula "northern limit line" near the south island, including Bai Ling, xiaoqingdao island, the island, large Qingdao and outlying islands. The DPRK may aim at the islands for as many as 1000.

"Northern limit line" unilaterally set by South Korea, north Korea has not admitted.

In addition, South Korea, found that since late last year, north Korea datong - "B" type half submarine activities more frequently. This boat is equipped with two torpedo tubes, difficult to radar.

South Korean military said north Korea using submarine infiltration increased 3 to 4 times according to the number of exercises. North Korea in waters north of the "northern limit line" gather the equipment torpedo submarine 13 and 360 small combat ship.