People have been building boats for at least 10,000 years, making them one of the oldest types of transportation. They're a big part of history, which is why there are many expressions about boats.
If you have the same problems or are in the same situation as someone else, you can say you are "in the same boat." This expression comes from the fact that people on the same boat are all affected if the boat gets into trouble while at sea.
For example, if your friend told you they had lost their job, and you had also lost your job, you could say "Looks like we're in the same boat — I lost my job too!"
If a person is doing something too much or in an extreme way, you can say they are "going overboard" with it. This expression comes from the 1600s when boats were mostly made of wooden boards, and going overboard meant falling into the water.
So if your friend kept calling the same company to ask for a job, you could say, "Don't go overboard! If you keep calling them they won't hire you."
If someone misses out on something, especially because they were late or too slow, you can say they have "missed the boat." This expression refers to being late to board a boat that departed at a specific time.
So your friend might say, "I just want to make sure I'm the first person they call when they're hiring. I don't want to miss the boat!"