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.

An aluminum boat that is 16 feet long needs to have a **60 horsepower** motor. Once equipped, it can have a speed of 25 to 30 miles per hour.

## How big of an outboard 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.

**15 to 25 HP engine**

They are an excellent choice for: 10 to 14 feet (3 – 4.5 m) long inflatable boat. 12 to 16 feet (3.65 – 5 m) long Jon boat, fiberglass boat, and aluminum fishing boat.

**How do I know what size motor for my boat? – Related Questions**

## How much hp does a 14ft boat need?

Some 14’s are wide and deep and could handle a 25 while others are narrow and shallow and would be scary at any higher speed or even sitting still with all that weight. A **15 hp** is a good compromise, same weight as a 9.9 and enough speed.

The max rated horsepower for most 14′ boats is **15hp unless they are the wider ones**. I have a 1452 with a 25 that is great. Also have a 1436 that does well with an 8hp but rated up to an 15 and would be very dangerous with a 25.

## How much weight can a 14 ft jon boat hold?

An average 160 pounds (72.5 kg) heavy and 14 feet (4.3 m) long Jon boat without an engine can hold **610 pounds (277 kg)** of gear and passenger.

## How fast does a 9.9 boat motor go?

Assuming this is a light 14′ utility boat and a standard 9.9, Mercury would recommend a 8.5 to 9.5 pitch prop for the OP’s application and predicts a top speed around **20 mph**.

## How fast does a 4hp boat motor go?

With the throttle all forward and with the waves pushing the stern, the boat planes and reaches a speed of **12 knots**.

## How much HP does my boat need?

The safest way to determine how much horsepower you need for your boat is to know the total weight of your boat. The rule of thumb is to have **25-40 pounds of weight per 1 horsepower**. If your boat weight is 800 pounds you would need a 32-20 horsepower engine.

## How big of a boat will a 9.9 push?

To answer the question posted “Best size aluminum boat for 9.9hp 2-stroke?” **A 12ft** would provide the best performance with a 9.9. If you want more boat space then a 14ft would be better but would perform best with a larger motor.

## How fast will a 90HP outboard go?

21-foot pontoon boat with a 90 HP engine could hit **25 miles per hour**.

## How fast will a 25hp outboard go?

A 25hp Pontoon boat will not be very fast, with an expected maximum speed of **between 5 and 10 mph**. Most commercially accessible pontoon boats tend to average between 18 and 25 mph, although there are a few very quick production boats on the marketplace, plus some altered ones that have recently set world records.

## Is 25 hp enough for 16 ft boat?

You have to check the specs on the dry weight of the hull. A thinner gauge hull,such as the Lund Rebel 16′ with a . 065 aluminum only weighs in at 400 some pounds. add your people and gear and A 25 hp will move that **around just fine**.

## How fast does a 40 hp boat motor go?

A 40hp Pontoon boat with an average load of people can expect to reach speeds of around **10 – 15 mph**.

## How fast can a 12 ft jon boat go?

12-foot jon boats have an average weight capacity of 420 pounds and an average maximum horsepower of about 5 to 7 HP, however, **some models allow up to 10 HP**. A 5 HP motor is expected to have a top speed of 10mph. 7 HP could have 15mph or more. This speed is great when riding in slower moving rivers and streams.

## What is the biggest motor you can put on a 14ft jon boat?

You don’t need anything larger than 25 hp.

## How fast can a 10 hp boat motor go?

10 HP Outboard: Speed & Runtime

Power (Watt) |
Speed (mph/kph) |
Range (mile/km) |

**1000** |
**5/8** |
**45/72** |

**2000** |
**6.7/10.8** |
**30.2/48.6** |

3000 |
8/13 |
24/39 |

4000 |
11.5/18.5 |
25.9/41.7 |

## Can you stand in a 12-foot jon boat?

No, it’s not as comfortable as standing on the carpeted decks of my Skeeter, but it works. When standing as high as possible is a fishing advantage, such as looking for shallow-water cruising bass during spring, **one angler can stand on the seats of my 12-foot jon boat and still have decent stability.**

## Do jon boats tip easy?

**A jon boat which is unstable on the water is definitely unsafe for use because it could easily tip over**. However, almost all things that can make a jon boat unstable can be controlled. Some examples include exceeding the boat’s carrying capacity and uneven distribution of weight in the boat.