SEOUL, Jan. 17 (Yonhap) South Korea will deploy 12 additional maritime choppers by 2022 to better counter growing North Korean submarine threats, the state defense procurement agency said Tuesday.

The Defense Acquisition Program Administration (DAPA) said the military plans to invest about 900 billion won (US$768 million) to pick a helicopter model for future service in the country's Navy. The three models being considered are AgustaWestland's AW-159, Sikorsky's MH-60R, and NHIndustries' NH-90.
                                                               
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