## How do I find the HP rating of my boat?

The boat’s capacity plate will list the maximum horsepower for your boat and can usually be found located near to the helm, steering area, and in full view of the captain. This what a capacity plate looks like (image credit boaterexam.com) and where you can find it on a typical boat.

## Why do boats have a max hp rating?

It seems obvious that the maximum horsepower rating is to keep us from speeding out of control with an oversized engine and, since these ratings are mandated by the U.S. Coast Guard, it’s a logical assumption that these capacities are the result of their testing.

**What is a rating on a boat?**

IRC is a rating rule Each boat’s rating (her ‘handicap’) is calculated using measurements of the boat; her length, weight, draft, rig size, sail area, and specific characteristics and features. The resulting time corrector, the boat’s ‘TCC’, is her handicap.

### What is maximum HP rating on hull plate?

(iii) The maximum horsepower capacity determined in accordance with § 183.53(b) must not exceed 40 horsepower.

### How do you read a boat capacity plate?

Look for a capacity plate near the operator’s position or on the transom of the boat. This plate indicates the maximum weight capacity and/or the maximum number of people that the boat can carry safely in good weather. You should not exceed either the stated maximum weight capacity or the maximum number of people.

**Can you exceed the HP rating on a boat?**

The maximum horsepower capacity marked on a boat must not exceed the horsepower capacity determined by the computation method discussed in paragraph (a) of this section, or for certain qualifying boats, the performance test method discussed in paragraph (b) of this section.

#### Can you overpower a boat?

If you decide to ignore the boat’s maximum horsepower and overpower it, you’re exposing every part of your boat to pressure above and beyond what it was designed to endure, risking significant damage to the hull of your boat.

#### What does a capacity plate indicate?

Always check the capacity plate usually near the operators position or on the boats transom. This plate indicates the maximum weight capacity or the maximum number of people that the boat can safely carry.

**What type of boat must have a capacity plate?**

Federal Law mandates that all powerboats less than twenty feet in length need to carry this information in the form of a Capacity Plate. Each Capacity Plate includes the maximum number of adult persons, the maximum gross load, and the maximum size of engine, in horsepower, that your boat can legally carry.

## How many people is my boat rated?

If your boat does not have a capacity plate, the U.S. Coast Guard recommends the following formula for calculating maximum occupancy: multiply the boat’s length times its width and divide by 15. For example, a 6-foot wide, 18-foot boat can carry up to seven people safely.

## Can you go over the HP rating on a boat?

**How much HP can my boat handle?**

You multiply your boat length by the transom width. Then you take that number, which is known as the “factor,” and match it to a horsepower capacity according to the Code of Federal Regulations Table 183.53 — Outboard Boat Horsepower Capacity, shown below.

### What info is on a capacity plate?

Each Capacity Plate includes the maximum number of adult persons, the maximum gross load, and the maximum size of engine, in horsepower, that your boat can legally carry. The next time you’re around a boat, look for its Capacity Plate; it should be permanently fastened near the steering area, or the helm.

### What does the capacity plate indicate?

A Boat’s Capacity Always check the capacity plate usually near the operators position or on the boats transom. This plate indicates the maximum weight capacity or the maximum number of people that the boat can safely carry.

**What happens if you put too big of a motor on a boat?**

If one were to put a larger than rated motor on the boat there would be pressure and stresses applied that may be over the acceptable range for the boat and serious damage could occur.

#### What happens when you overpower a boat?

#### Can you put a bigger outboard than rated?

**How do you calculate the maximum capacity of a boat?**

## What is the hull number on a boat?

On November 1, 1972 the federal government enacted regulations which require a standardized hull number format on any boat that is manufactured for domestic consumption. The number must be 12 characters long and arranged in such a way that it shows the manufacturer’s code, a production number, and the production date or model year.

## Do all boats have capacity plates?

No, not all boats do, although it’s essential to have to ensure the safety of the passengers and the crew. According to the US Coast Guard, the capacity plate is only legally required for boats less than 20 feet in length.

**How to determine the maximum number of passengers on a boat?**

You have to know the maximum weight capacity before you can determine the maximum number of passengers. Try sections 183.35, then 183.41. However, you will need a new capacity plate reflecting the correct limits for your boat because any agency that inspects your boat is going to use whatever is displayed.