SEOUL—North Korea has long kept its adversaries on their toes with taunting rhetoric and shock weapons tests.

As President-elect Joe Biden prepares to get business, leader Kim Jong Un supplied a sneak peek of Pyongyang’s pipeline of navy components with uncommon element in the course of a scarce Workers’ Celebration Congress conference that ended this 7 days.

The North is producing navy drones, a nuclear-run submarine and surveillance satellites, Mr. Kim said. Missiles will get lesser and lighter. Many others will fly farther.

A hypersonic warhead, which commonly can vacation a mile for each 2nd, is all set for tests and creation, he said. The advice technologies for a multi-warhead rocket, presumed to be for an intercontinental ballistic missile, is at its final stage.

At a Thursday evening navy parade celebrating the Workers’ Celebration conference, the North set a host of navy components on display, which include a submarine-launched ballistic missile that point out media touted as the “world’s most powerful weapon.”