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Performance Bulletin


Engine: Yamaha F300XSB
Boat: Sea Fox 251 Bay Fox
Configuration: Single
Test Date: 7-Aug-2023
Sea Fox® - Sea Fox 251 Bay Fox

Performance Bulletin

48 - Sea Fox 251 Bay Fox

Sea Fox 251 Bay Fox

Length 24' 4"
Beam 8' 6"
Dry Weight (Boat Mfr. Pub) 2,940 lbs
Maximum HP 300 hp
Fuel Capacity 72 gal
Weight as Tested 4,511 lbs

F300XSB

Horsepower 300 hp
Induction EFI/VCT/DOHC
Displacement 4.2L
Weight (Estimated) 611 lbs
Gear Ratio 1.75:1

Engine Mounting Height

Mounting Hole Position #2
Ventilation Plate Height 1/2" Above Boat Bottom

Propeller(s)

Series Saltwater Series II
Diameter x Pitch 15-1/4 x 18
Yamaha Part # 6CE-45934-20-00
Propeller Material Stainless Steel

Test Conditions

Number of People 2
Air / Water Temperature (Fahrenheit) 91° F / 84° F
Elevation (in feet above sea level) 0'
Wind Velocity 15-20 MPH

Comments

Test weight includes 70 gallons of fuel, 2 batteries, safety and test equipment.

YPB#: PB_SFX_251 Bay Fox_LF300XSB_8-7-2023_BAY

Sea Fox® - Sea Fox 251 Bay Fox

Performance Bulletin


Engine: Yamaha F300XSB
Boat: Sea Fox 251 Bay Fox
Configuration: Single
Test Date: 7-Aug-2023
F300XSB

Performance Data

RPM
MPH
GPH
MPG
1000 5.8 1.4 4.14
1500 7.3 2.2 3.40
2000 9.3 3.9 2.42
2500 15.2 5.2 2.91
3000 26.1 6.3 4.13
3500 30.8 8.3 3.71
4000 35.8 11.5 3.12
4500 40.5 15.0 2.71
5000 44.1 19.6 2.25
5500 48.3 25.8 1.87
5800 50.1 26.9 1.86

Time to Plane: 3.40 seconds<br /> 0-30 MPH: 7.10 seconds

Notice To Consumer The information and data contained in this Performance Bulletin is approximate and subject to many different factors and variables. It is provided as a guideline only and should not be relied upon as representative of actual performance. Your boat’s performance may be different than the information contained in this Performance Bulletin due to various factors, including your boat’s actual weight, wind and water conditions, temperature, humidity, elevation, bottom paint, boat options affecting wind/water drag and/or boat weight, and operator ability. Please confirm the specifications and performance data on your specific boat/engine combination with your dealer prior to purchase. Please also keep in mind that the data contained in this Performance Bulletin may or may not have been performed using Yamaha PowerMatched components. Yamaha reserves the right to change the specifications and performance data of this Performance Bulletin or engine without notice. This document contains many of Yamaha’s valuable trademarks. It may also contain trademarks belonging to other companies. Any references to other companies or their products are for identification purposes only, and are not intended to be an endorsement.