1998 Sokcho submarine incident
The 1998 Sokcho submarine incident occurred on 22 June 1998, offshore of the South Korean city of Sokcho. == Capture == On 22 June, a North Korean Yugo-class submarine became entangled in a fishing driftnet in South Korean waters approximately 18 kilometres (11 mi) east of the port of Sokcho and 33 kilometres (21 mi) south of the inter-Korean border.
Source: Wikipedia — 1998 Sokcho submarine incident (CC BY-SA 4.0)