Navy boosts anti-sub capabilities in wake of Cheonan

North Korea carried out a torpedo attack on the South Korean corvette Cheonan, which sank off the coast of the northwestern island of Baengnyeong, taking with it 46 sailors.

Since then, the South Korean Navy has updated its patrol combat corvettes, increased anti-submarine exercises in the West Sea and made changes to its operations to better prepare for submarine attacks.

Previous to the incident the Navy’s anti-submarine efforts were mostly concentrated in the East Sea, the deeper waters of which provide a more suitable environment for submarine operations. A

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