1. What is a Pontoon Boat Speed Calculator?

Definition: This calculator estimates the theoretical maximum speed of a pontoon boat based on engine horsepower, boat displacement, and hull constant.

Purpose: It helps boat owners and designers understand the performance potential of their pontoon boat configuration.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( S \) — Boat speed (mph)
• \( C \) — Hull constant (typically 150 for pontoons)
• \( P \) — Engine horsepower (hp)
• \( D \) — Displacement weight (lbs)

Explanation: The speed is proportional to the square root of the power-to-weight ratio, scaled by a hull-specific constant.

3. Importance of Speed Calculation

Details: Understanding potential speed helps in engine selection, fuel efficiency planning, and safety considerations.

4. Using the Calculator

Tips: Enter the hull constant (default 150), engine horsepower, and total displacement (including boat, passengers, and gear). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical hull constant for pontoons?
A: Most pontoon boats have a constant between 135-150. Performance models may approach 180.

Q2: How do I find my boat's displacement?
A: Add the boat's dry weight, engine weight, fuel weight, and total passenger/gear weight.

Q3: Why is this a theoretical maximum speed?
A: Actual speed may be lower due to water conditions, hull cleanliness, wind, and other factors.

Q4: Does this account for multiple engines?
A: Yes, use the total horsepower of all engines combined in the calculation.

Q5: How accurate is this calculation?
A: It provides a good estimate (±10%) for planning purposes, but real-world testing is recommended.