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A Factual Report From Mercury Marine

Boat House Bulletin Review

Engine:

8.2 MAG ECT Mercury® MerCruiser®

Boat:

Cobalt - R 7

Prop:

Bravo Three®

8.2 MAG ECT
Select Units:

Performance Summary

Best Fuel Economy (MPG@RPM) Best Fuel Economy (L/100km@RPM)
  • 2.6 @ 3000
  • 90.5 @ 3000
Top Speed (MPH@RPM) Top Speed (kts@RPM)
  • 49.8 @ 4800
  • 43.3 @ 4800
Acceleration 0 - 20 MPH (seconds) Acceleration 0 - 32 kts (seconds)
  • 4.97
Acceleration 0 - 30 MPH (seconds) Acceleration 0 - 48 kts (seconds)
  • 7.25
RPM Range Speed (MPH / kts) Speed (KPH / kts) Fuel (GPH) Fuel (LPH) Fuel (MPG) Fuel (L/100km)
1000 5.9 / 5.1 9.5 / 5.1 2.5 9.5 2.4 98.0
2000 11.6 / 10.1 18.7 / 10.1 6.8 25.7 1.7 138.4
3000 28.3 / 24.6 45.5 / 24.6 10.7 40.5 2.6 90.5
3500 34.7 / 30.2 55.8 / 30.2 14.1 53.4 2.5 94.1
4000 40.5 / 35.2 65.2 / 35.2 18.2 68.9 2.2 106.9
4500 45.3 / 39.4 72.9 / 39.4 25.6 96.9 1.8 130.7
4800 49.8 / 43.3 80.1 / 43.3 28.7 108.6 1.7 138.4

Performance Curve

GPH MPH MPG
LPH KPH L/100km

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
  • 45 gallons
  • 170 liters
Boat Weight as Tested
  • 5200 lbs
  • 2359 kg

Engine Specifications

Engine
  • 8.2 MAG ECT Mercury® MerCruiser®

Boat Specifications

Manufacturer
  • Cobalt
Website
Boat Model
  • R 7
Boat Type
  • Runabout - open bow
Material
  • Fiberglass
Length
  • 27 ft 6 in
  • 8.4 m
Beam
  • 8 ft 6 in
  • 2.6 m
Max HP Capacity
  • 430
Fuel Tank Capacity
  • 77.0 gallons
  • 291 liters
Steering Type
  • MerCruiser Power Steering
Dry Boat Weight
  • 5200 pounds
  • 2358.7 kg
Mounting Bolt Hole
  • n/a

Propeller Specifications

Part Number
  • 8M8022400
Mercury Name
  • Bravo Three®
Pitch
  • 22.5
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