HMS Indus was a very big boat that was used by the British Navy a long time ago. It was called a ship of the line because it had lots of big cannons on it that could shoot really far. The ship was built to be very strong and tough so it could go out into the ocean and fight other ships.
When sailors lived on the ship, they had to sleep in hammocks because there wasn't much space. They also had to work very hard to keep the ship running properly. They had to climb up high ropes and crawl through small spaces to fix things that were broken.
HMS Indus traveled all over the world, from Europe to Africa to Asia. It had a very important job to protect British trade routes and fight against enemies who also had big ships with lots of cannons.
Eventually, the ship became too old and was retired from service. Today, you can visit HMS Indus in a museum and imagine what it would have been like to live and work on such a big and powerful ship.