BBMS Swanwick LTD

phone - 01489 580250 or fax 01489 580251


Alpha One Stern Drive

Technical Specification

Maximum Power Capacity 400 HP (295 kW)

Lower Unit Design Extended Length Strut

Maximum Propeller Diameter 2 X 16"

Water Inlet Location Strut

Clutch Type High-Strength Smooth-Shift Cone Clutch with F-N-R

Available Gear Ratios 1.81, 2.00, 2.20, 2.43:1

Counter-Rotation Twin Prop

Upper Unit Gear Set Precision Shimmed Assembly with Near-Net Forged Helical Gears

Lower Unit Gear Set Precision Shimmed Assembly Forged Bevel Gears with Twin Counter Rotating Propshafts for Bravo Three

Propshaft Material Heat-Treated Stainless Steel

Standard Exhaust Outlet Through Propeller

Required Propeller Hub None for Bravo Three

Recommended Lubricant Mercury High-Performance Gear Lube

Monitoring System Engine-Mounted Lube Monitor w/Audio Warning or Engine Guardian®

Corrosion Warranty 3-Year, Limited

Housing Construction Corrosion Resistant XK 360 Aluminum Low-Copper Alloy

Corrosion Protection Tri-Paint, Anodes & MerCathode® Electronic Corrosion Prevention

Anode Type Ultra-Pure Aluminum Anodes or Magnesium Anode Kit

Speedometer Pick-up Integrated Into Lower Housing, Digital Output Optional

Steering System Single Cylinder Power Steering with Anti-Feedback

Steering Range 56° Range Stop to Stop, Digital Output Optional

U-Joint Type Permalube® Virtually Maintenance-Free

Power Trim System Twin-Cylinder Hydraulic Featuring Power Trim XD® Kick-up Return

Typical Trim Range -2° to 14°

Trim Limit Switch Adjustable Limit Analog or Digital - Engine Dependant

Trailer Limit 51°

Trim Hinge Pin Design Permanently Lubricated - No Maintenance Required

Hydraulic Trim Lines Stainless Steel Braided Armor

Drive Coupler Greaseable From Inside Boat

Drive Weight 148 lbs. (67 kg)