At the observation post he was briefed on the plan for the test-fire and gave an order for it.

As soon as the order was issued, the submarine submerged as low as the biggest depth of waters for launching and fired the ballistic missile.

The test-fire was aimed to confirm the stability of the underwater ballistic launching system in the maximum depth of waters, flying kinetic feature under the vertical flight system of the ballistic missile powered by the newly developed high power solid fuel engine, the reliability of the phased heat separation and the working accuracy of nuclear detonating device of warhead at the preset altitude.

It fully confirmed and reinforced the reliability of the Korean-style underwater launching system and perfectly met all technical requirements for carrying out the Juche-based underwater attack operation.

He noted with great satisfaction that Juche Korea had access to one more means for powerful nuclear attack as required by the strategic intention of the Party Central Committee. He highly praised the officials, scientists and technicians in the field of national defence science and munitions factories for having successfully rounded off the technology of underwater launching of ballistic missile from a strategic submarine at a higher level.

The successful test-fire would help remarkably bolster up the underwater operational capability of the KPA navy, he said, adding that it is now capable of hitting the heads of the south Korean puppet forces and the U.S. imperialists anytime as it pleases.

This eye-opening success constitutes one more precious labor gift the defence scientists and technicians are presenting to the great leaders and the motherly Party.

He called on the reliable defence scientists and technicians to uphold through scientific practices the Party's strategic intention to react to nuclear weapons in kind. He urged them to step up the project for bolstering the nuclear force to mount nuclear attacks on the U.S. imperialists and the south Korean puppet group of traitors any time when the Party is determined to do.

He had a photo session with the defence scientists and service personnel of the navy who took part in the test-fire in celebration of the successful day.