In North Korea, four people were stopped by the police. This is because a ship did not work well. Kim Jong Un said it was a big mistake.

North Korea does not often punish its officials for bad weapon tests. But Kim arrested four officials. This means he is very serious about his army plan and wants people to follow rules.

On Wednesday, a big ship was hurt when it fell during a party in Chongjin. Kim was there. The ship is now on its side in the water.

Kim was very angry. The ship is important for his navy. Kim said it was the fault of the soldiers, scientists, and people at the ship factory. He said they were not careful and did not do their jobs well.

On Monday, North Korea said they caught Ri Hyong Son. He works for the Workers Party. He said he was very sorry for the bad rocket launch.

KCNA said on Sunday that the police caught three people from Chongjin Shipyard because of a problem. They were the main engineer, the boss of the ship part, and a manager.

Hong Kil Ho works at the shipyard. KCNA said before that he was asked questions.

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

When Kim started to rule, he killed many important people. He did this to be very strong. Now, he is very strong, like his father and grandfather. So, he does not kill many people now.

Kim helps scientists who make weapons. He wants more nuclear weapons and missiles. Kim gave them new homes in Pyongyang. Last year, a satellite launch did not work. Kim told the scientists it was okay. He said, "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 wants them because he thinks the U.S. and its friends are a bigger danger.

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

North Korea said the ship was not badly hurt. They said it had a scratch and some water got in.

North Korea said on Friday it needs about 10 days to fix things. But many people think the damage is bigger than they said.