The development of nuclear-powered ships must consider their impact on the environment.

The agenda of the Security Council is an important issue related to national security and defense.

In our company, we always adhere to the principle of safety first.

He engaged in an extravehicular activity from the spaceship.

He is undergoing training for extravehicular activity.

The shipworm is known for eating wood.

We crossed the sea by catamaran.

The Security Council is the main organization for maintaining international peace and security.

The National Security Council was convened to make important policy decisions.

The United Nations Security Council plays a crucial role in maintaining world peace and security.