North Korean Submarine

Kim Jong-un on North Korean submarine
(North Korea)

Kim Jong-un, the "Supreme Leader" of North Korea, offered navigation tips and issued stern battle orders during a proud tour of a Romeo class submarine of the People's Navy.

Designed in the 1950s, the vessel was in production for the Soviet Union for only 48 months until being succeeded by nuclear-powered submarines 53 years ago. Every other navy in the world then gave up on the Romeo, with its noisy and easily detectable diesel engine - apart, that is, from North Korea's.

For the normally ultra-secretive North Korea to broadcast submarine footage is perplexing.