Fighter jets flying in formation during a military parade Thursday evening attended by North Korean leader Kim Jong-un in Pyeongyang's Kim Il-sung Square.
The event was held to mark the end of the eight-day Workers' Party congress.
Going by images released on Friday by the North's state-run Korean Central News Agency, the regime showcased its state-of-the-art weaponry, including a new type of submarine-launched ballistic missile which is presumed to be called the 'Pukguksong-5.'
The report called it the "world's most powerful weapon" that will "overpower the world with strengthened military technology and underwater strategy"."
Experts see advancements in SLBMs as a game-changer in weapons advancement since it's harder to intercept a fired missile from a submarine navigating deep waters.
"It's been about three months since North Korea unveiled the fifth version and it signifies that it's trying to diversify its SLBMs. The diameter of the latest version has certainly been made bigger. It also looks like it can carry a heavier payload."
Other weapons seen during the parade were modified versions of Russia's Iskander-class short-range ballistic missiles one of the North's so-called "strategic weapons" that the regime claims can evade South Korea's missile defense systems.
But unlike the North's last military parade three months ago North Korea did not release images of inter-continental ballistic missiles, which could be aimed at sending Washington a message about its strong military might as denuclearization talks remain in limbo.
South Korea's Joint Chiefs of Staff says the military hardware displayed during the parade is being analyzed.
Kim Ji-yeon, Arirang News.