Another Korean 2 100 nines modernized

On 12 August, a conventional submarine called Jung Woon (SS 067) of the kind Jang Bogo (KSS I or 209/1200) returned to operational service in the Republic of Korea's naval forces (Daehan-minguk Haegun) after the modernization was completed. Jung Woon is the second submarine of this kind to be upgraded...