Courtesy flag

Okay kiddo, have you ever noticed a flag that is flown on a boat that is different from the country's flag where the boat is from? That flag is called a courtesy flag.

So, when a boat travels to a different country, it's like visiting a new place. And just like how we behave differently when we visit new places, boats also have to follow some rules when they visit a new country. One of those rules is to hoist a courtesy flag.

The courtesy flag is a sign of respect that shows that the boat is visiting and honoring the laws and rules of the new country. It helps the authorities of the country to identify which boats are visiting, so they can keep a track of the boats in their waters.

In simpler words, a courtesy flag is like a 'welcome' sign for boats when they visit a new country, and it's an important way to show respect for the country and its rules.