The rule of thumb is based on weight alone, and says you should have between 40 and 25 pounds of weight for each horsepower. For example, a 5,000-pound boat could have an engine with between 125 and 200 horsepower.
How big of a motor can I put on my boat?
The rule of thumb guidelines based on weight alone would be between 40 and 25 pounds of weight per 1 hp. In other words a 5,000 lb boat fully loaded could have a 125 to 200 hp engine. The wide range, based on weight alone, is due to the variety in design and handling characteristics of a given boat.
How much HP does my boat need?
For every forty pounds of boat weight, you need one horsepower to motor along over smooth waters at 20 miles per hour. So for a 4,000-pound boat, that’s 100 horsepower for smooth, steady cruising. For an 8,000 pound boat, that’s 200 horsepower. And so on.
How much horsepower does a 16 foot boat need?
It can have a range of 50-300 horsepower motors for maximal efficiency. This range already considers the boat’s size and usage. For a standard 16-foot aluminum boat, a 60 horsepower motor will suffice. On average, it can have a speed of about 25-30 miles per hour.
What is the biggest motor you can put on a 12 foot boat?
For example, a twelve-foot boat with a four-foot transom width translates into a maximum engine size of fifteen horsepower.
What size motor do I need for a 20 foot boat?
Tips for selecting the right size hp for portable outboard motor for your boat.
|Motor HP||Boat length (feet)||Boat length (metres)|
|5hp – 15hp||8′ – 14′||up to 4.2m|
|9hp – 20hp||11′ – 16′||up to 4.5m|
|20hp – 40hp||13′ – 18′||up to 5.0m|
|40hp – 75hp||14′ – 20′||up to 5.5m|
How fast does a 10 hp boat motor go?
View Full Version : 10 H.p. = 1.5 M.p.h.
How fast can a 115 hp boat go?
You could go as fast as 25 miles per hour on a standard pontoon boat with a 115 HP engine and a medium load. A 30-foot pontoon boat with a 115 HP engine can go up to 15 miles per hour.