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A Factual Report From Mercury Marine

Boat House Bulletin Review

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Performance Summary

Best Fuel Economy (MPG@RPM) Best Fuel Economy (KM/L@RPM) Best Fuel Economy (L/nm@RPM)
  • 2.4 @ 3500
  • 1.0 @ 3500
  • 0.6 @ 3500
Top Speed (MPH@RPM) Top Speed (KPH@RPM) Top Speed (kts@RPM)
  • 51.1 @ 4800
  • 82.2 @ 4800
  • 44.4 @ 4800
Acceleration 0 - 20 MPH (seconds)
  • 5.35
Acceleration 0 - 30 MPH (seconds)
  • 7.91
RPM Range Speed (MPH) Speed (KPH) Speed (KN) Fuel (GPH) Fuel (LPH) Fuel (MPG) Fuel (KM/L) Fuel (NM/L) Range (miles) Range (km) Range (nm) Sound (dBA)
1000 6.4 10.3 5.6 2.3 8.7 2.8 1.2 0.6 - - - -
2000 11.5 18.5 10.0 7.3 27.6 1.6 0.7 0.4 - - - -
3000 29.2 47.0 25.4 12.9 48.8 2.3 1.0 0.5 - - - -
3500 36.5 58.7 31.7 15.1 57.2 2.4 1.0 0.6 - - - -
4000 42.8 68.9 37.2 19.8 75.0 2.2 0.9 0.5 - - - -
4500 48.1 77.4 41.8 25.6 96.9 1.9 0.8 0.4 - - - -
4800 51.1 82.2 44.4 30.8 116.6 1.7 0.7 0.4 - - - -

Performance Curve

GPH MPH MPG
LPH KPH KML
LPH KN NML

Test Conditions

Test Date
  • 2013-09-06
Test Conductor
  • DH/SS
Air Temperature
  • 88 °F
  • 31 °C
Wind Velocity
  • 8 - 10 MPH
  • 13 - 16 KPH
  • 7 - 9 kts
Water Type
  • Salt
Fuel Level at Testing
  • 27 gallons
  • 102 liters
Boat Weight as Tested
  • 4880 lbs
  • 2214 kg

Engine Specifications

Number of Engines
  • Single
Engine
  • 8.2 MAG ECT Mercury® MerCruiser®
HP / kW
  • 380 / 283

Boat Specifications

Manufacturer
  • Cobalt
Website
Boat Model
  • R 5
Boat Type
  • Runabout - open bow
Material
  • Fiberglass
Length
  • 25 ft 8 in
  • 7.8 m
Beam
  • 8 ft 6 in
  • 2.6 m
Max HP Capacity
  • 430
Fuel Tank Capacity
  • 50.0 gallons
  • 189 liters
Steering Type
  • MerCruiser Power Steering
Dry Boat Weight
  • 4880 pounds
  • 2213.5 kg
Mounting Bolt Hole
  • n/a

Propeller Specifications

Part Number
  • 8M8022400
Mercury Name
  • Bravo Three®
Material
  • Stainless Steel
Diameter / Pitch
  • 15.75 / 22.5
Number of Blades
  • 4
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