Regulator 31
Powered by Twin Yamaha F350 V6 4.3L Engines
Real-World Offshore Performance Insights
The Regulator 31 delivers the legendary ride quality the brand is known for—deep-V stability, smooth offshore handling, and premium construction. Paired with twin Yamaha F350s, this boat offers powerful acceleration, strong mid-range cruising, and excellent top-end capability for serious Gulf and offshore anglers.
Performance Data
RPM | MPH | GPH | MPG |
|---|---|---|---|
| 1000 | 6.4 | 2.6 | 2.49 |
| 1500 | 8.6 | 4.4 | 1.98 |
| 2000 | 10.0 | 7.4 | 1.34 |
| 2500 | 13.6 | 12.2 | 1.11 |
| 3000 | 17.6 | 15.5 | 1.13 |
| 3500 | 26.1 | 18.6 | 1.40 |
| 4000 | 35.2 | 25.3 | 1.39 |
| 4500 | 40.5 | 30.8 | 1.32 |
| 5000 | 45.7 | 39.8 | 1.15 |
| 5500 | 51.3 | 54.2 | 0.95 |
| 6100 | 56.6 | 62.8 | 0.90 |
Regulator 31
| Length | 31' 4" |
|---|---|
| Beam | 10' 4" |
| Dry Weight (Boat Mfr. Pub) | 9,400 lbs |
| Maximum HP | 900 hp |
| Fuel Capacity | 300 gal |
| Weight as Tested | 12,158 lbs |
LF350XSA2 / F350XSA2
| Horsepower | 350 hp |
|---|---|
| Induction | EFI/VCT/DOHC |
| Displacement | 4.3L |
| Weight (Estimated) | 629 - 629 lbs |
| Gear Ratio | 1.75:1 |
Engine Mounting Height
| Mounting Hole Position | #3 |
|---|---|
| Ventilation Plate Height | 4" Above Boat Bottom |
Propeller(s)
| Series | Saltwater Series II |
|---|---|
| Diameter x Pitch | 15 x 20 |
| Yamaha Part # | 6CF-45932-20-00 / 6CE-45932-20-00 |
| Propeller Material | Stainless Steel |
Test Conditions
| Number of People | 2 |
|---|---|
| Air / Water Temperature (Fahrenheit) | 91° F / 87° F |
| Elevation (in feet above sea level) | 0' |
| Wind Velocity | 5-10 MPH |
⚡ Confident Offshore Acceleration
Twin Yamaha 350s provide the torque needed for a heavy 31’ deep-V hull.
Yamaha performance numbers:
0–30 MPH: 7.46 seconds
This means:
Strong lift with passengers, fuel, and gear
Quick response in the open Gulf
Predictable handling in rougher water
🚀 Solid Top-End Speed
In Yamaha’s certified testing, the Regulator 31 reached:
➡️ Top Speed: 55.1 MPH at 5,950 RPM
Ideal for:
Running far offshore quickly and efficiently
Staying ahead of incoming weather
Enjoying smooth, high-speed cruising when the seas allow
⛽ Offshore-Ready Cruising Efficiency
For a large offshore center console with twin 350s, the Regulator 31 delivers strong and consistent mid-range fuel economy.
Tested cruising numbers:
3,000 RPM → 30.4 MPH → 1.84 MPG
3,500 RPM → 39.8 MPH → 1.79 MPG
4,000 RPM → 46.7 MPH → 1.59 MPG
What this means for you:
Optimal cruising in the 30–40 MPH range
Predictable fuel burn for offshore trips
Great balance between speed, efficiency, and comfort
🌊 Built for True Bluewater Confidence
The Regulator 31 is designed for serious offshore use:
Deep-V hull slices through challenging seas
Wide beam (over 9’) provides added stability and deck space
Massive cockpit layout ideal for anglers and gear
Yamaha’s V6 4.3L F350s deliver smooth torque and quiet thrust
Whether you’re running to wrecks, reefs, or deep-water pelagics, this model provides the confidence and ride quality that define Regulator.
🔧 Yamaha-Optimized Test Setup
Yamaha tested this boat with:
15″ × 21″ Saltwater Series II props
Mounting height set at 2 7/8″ above the bottom
Two-person onboard test load
Actual performance can vary depending on:
Fuel load
Gear & ice weight
Number of passengers
Bottom cleanliness
Propeller choice and rigging setup
This bulletin serves as a trusted benchmark for what this boat can deliver under ideal rigging and conditions.
💡 What This Means for You
Choosing the Regulator 31 with twin Yamaha F350s provides:
✔ Strong 55+ MPH offshore performance
✔ Fast, confident acceleration
✔ Practical cruise economy in the 1.6–1.9 MPG range
✔ One of the best-riding 31’ hulls in the offshore category
✔ Yamaha reliability and long-term durability