North Korea put four people in prison. They tried to launch a ship, but it did not work. Kim Jong Un said they were very careless.

North Korea does not often punish its leaders for bad weapon tests. But Kim put four leaders in prison. This shows that his army plan and rules are very important to him.

A big ship was hurt on Wednesday. Kim was there. A part broke off the ship when they tried to put it in the water at Chongjin port. Pictures show the ship on its side with blue covers. Some of the ship is under water.

Kim was very angry about the warship. It is important for his navy. Kim said it was a very bad thing. He blamed the army, scientists, and people who build ships.

On Monday, the news said police caught Ri Hyong Son. He works for the Workers Party. He said he was very sorry because the rocket did not fly.

KCNA said on Sunday that three people from the Chongjin Shipyard are in trouble. They are the main engineer, the boss of the hull workshop, and a manager.

Hong Kil Ho worked at the shipyard. He was asked questions too, news said.

On Thursday, North Korea said bad people cannot run away. But we don't know their punishment.

At first, Kim killed many important people. He did this to be very strong. Now, he is strong like his father and grandfather. He does not kill many people anymore.

Kim helps scientists who make weapons. He wants more nuclear weapons and missiles. He gave them new homes. Last year, a satellite launch failed. Kim told the scientists, "It is okay to fail. You learn from mistakes."

Experts say Kim wants to make many new weapons. He made this plan in 2021. Kim said North Korea needs more ships and strong weapons. He said this is because the U.S. and its friends are a bigger danger.

Last month, North Korea showed a big new ship. It is a warship. It can carry weapons. The leader of North Korea said it was a big step for their navy.

North Korea said the ship was not badly broken. They said it only had some scratches and a little water got inside.

North Korea said it needs 10 days to fix things. But many people think the damage is worse.