North Korea's 600mm multiple launch cannon fires for the first time... Launch vehicle modified to six-barrel, four-axle wheeled model

North Korea revealed on the 13th that the missile it had launched the previous day was a test firing of a new 600mm multiple launcher. The Rodong Sinmun newspaper said on the same day that, “The Defense Industrial Enterprises under the Second Economic Committee are
"We have developed and produced a new 600mm multiple launch gun carriage with improved performance in response to the operational requirements of the military," said Chairman of the State Affairs Commission Kim Jung Eun, adding, "The newly developed gun carriage has improved maneuverability and
The previous day, South Korea's Joint Chiefs of Staff reported that North Korea had fired a short-range missile into the Sea of Japan from the Pyongyang area at around 7:10 a.m.
The missiles flew about 360 kilometers before falling into the Sea of Japan. According to North Korean reports, the new 600mm multiple launch gun is a replacement for the existing
It appears to have been upgraded from a four-barreled to a six-barreled. The mobile launcher (TEL) has also been upgraded from a tracked type to a four-axle wheeled type, which is believed to have enhanced maneuverability.
Yoo Young, a member of the National Assembly's Defense Committee and a member of the People's Power Rep., said, "The existing four-axis, four-barreled wheeled super-large multiple launcher is limited in terms of continuous firing due to the shaking of the vehicle body caused by the impact of firing.
"At the time of development, the launch interval was 17 to 19 minutes, and attempts to launch consecutive missiles resulted in crashes during the ascent phase," he said.
He continued, "The new four-axis, six-barreled wheeled rocket launcher has increased the payload and is highly stable.
"It appears that its mobility and simultaneous strike capability have been improved," it said. In particular, it analyzed that "the mobile launcher has been upgraded from a tracked type to a four-axle wheeled type, enhancing its mobility."