Submarine
Channel: English Unpacked
Date: 2024-01-08

A submarine is a type of watercraft that is designed to operate underwater. It is equipped with a hull that allows it to stay submerged and is propelled by engines and propellers. Submarines are used for various purposes such as military operations, scientific research, and underwater exploration. They are capable of carrying a crew and can travel for extended periods underwater, providing a means of transportation and a platform for various activities beneath the surface of the water.