* Desired speed: Do you want to cruise leisurely at 5 mph, or achieve a respectable 10 mph? Higher speeds require significantly more horsepower.
* Hull design: A smooth, efficient hull will require less power than a boxy or poorly designed one. The shape dramatically affects water resistance.
* Water conditions: Are you operating on calm lakes or navigating rivers with currents? Currents and waves increase the resistance you need to overcome.
* Number of passengers and cargo: More weight requires more power.
* Type of engine (outboard, sterndrive, inboard): Each has different efficiencies.
Without knowing these factors, giving a specific horsepower recommendation is impossible. However, I can offer some general guidelines:
* Low horsepower (10-25 hp): Suitable only for very slow speeds in calm conditions, likely only suitable for maneuvering within a small area, not for any significant distance travel.
* Medium horsepower (30-50 hp): Could be sufficient for leisurely cruising on calm waters, but might struggle in windy conditions or with heavy loads.
* High horsepower (50+ hp): Necessary for faster speeds, navigating challenging water conditions, and carrying more weight. You might need significantly more if you want to reach higher speeds.
Recommendation:
Consult with a marine surveyor or experienced boat mechanic. They can assess your specific houseboat's hull design and your intended usage, then provide a much more accurate recommendation for the appropriate horsepower. They can also advise on engine type and other critical factors. Trying to guess based solely on weight is risky and could result in an underpowered or overpowered engine, both of which are costly mistakes.
