Today, bilge pumps are efficient electrical devices that do not require manual 'rescue'. Modern pumps use sensors that turn the pump on when needed and turn it off when the water runs out. The function of a bilge pump is to remove water from the bilge.
The bilge pump is the bottom of the boat below the lowest floor, up to the hull. This is where water accumulates, which is often mixed with marine debris and oil/fuel. Rule's pumps are designed to be non-sparking, so the water/oil mixture does not burst into flames.
Image Source: Google
One of the many types of bilge systems, the electric submersible pump is by far the most popular. They are extremely easy to install and only require a battery and pipes to discharge the water. If a sensor malfunction or the pump switch is left on, Rule pumps are designed to run dry for up to two hours.
To prevent the pump from burning prematurely, a float switch is recommended to keep it from working when there is no water in the bilge. It is very important to buy quality pumps that will not let you down.
It seems like an exaggeration, but a reliable and efficient pump could one day save your life. The bilge pump is often the first line of defense when it comes to flooding and will increase the amount of time you have to react to an emergency.