Pumps are essential components of a boat's plumbing and fluid management systems, responsible for moving various fluids onboard, including freshwater, wastewater, bilge water, and fuel. They play a critical role in maintaining the vessel's functionality, safety, and comfort. Here's an overview of common types of marine pumps and their functions:

1. Freshwater Pumps
2. Bilge Pumps
3. Wastewater Pumps
4. Fuel Pumps
5. Other Marine Pumps:      

o   Coolant Circulation Pump: A pump used to circulate engine coolant through the engine's cooling system, ensuring proper temperature regulation and engine performance.

o   Livewell Pump: A pump used to aerate and circulate water in livewells or baitwells, maintaining oxygen levels and keeping bait or catch alive

6. Engine Pumps