Repowering is exactly what it sounds like: getting a new and better power source behind your boat. Whether that is by rebuilding your engine or installing a new one, this cost-efficient option is a great alternative to purchasing a new boat or continuing expensive maintenance on an aging engine. There are many reasons that people choose to repower their boat. Buying a new boat may not be in your budget at the moment or you may simply want a better, more powerful or fuel efficient engine.