Westerbeke 30B Three Marine Diesel Engine

The Westerbeke 30B Three is a compact, dependable, and fuel-efficient inboard marine diesel engine delivering 30 HP, designed specifically for sailboats and small cruising vessels. Known for its smooth operation and long service life, the 30B Three has earned a strong reputation among sailors and marine professionals seeking reliability and simplicity.

Engine Design & Construction

The engine features a 3-cylinder, 4-stroke diesel configuration with mechanical fuel injection, providing consistent power delivery and dependable torque across a wide RPM range. Built with durable marine-grade components, the Westerbeke 30B Three is engineered to withstand continuous use in harsh marine environments.

A freshwater cooling system with heat exchanger helps maintain stable operating temperatures while protecting internal components from corrosion, significantly extending engine life. Its compact footprint makes installation easy, even in limited engine spaces.

Performance & Efficiency

Producing 30 HP, the Westerbeke 30B Three offers smooth and responsive propulsion for cruising, docking, and maneuvering. Its strong low- and mid-range torque characteristics make it especially suitable for displacement hulls and auxiliary sailboat propulsion.

The engine’s mechanical injection system ensures efficient fuel consumption, making it economical for long passages and routine marine use.

Marine Integration

The Westerbeke 30B Three is compatible with marine gearboxes and traditional shaft-drive systems, allowing flexible integration into various boat designs. Its balanced 3-cylinder layout minimizes vibration and noise, enhancing onboard comfort during extended operation.

Ease of Maintenance & Reliability

Designed for straightforward maintenance, the 30B Three provides easy access to filters, belts, and service points. Its simple mechanical design reduces maintenance complexity and operating costs. Westerbeke long-standing presence in the marine industry ensures reliable parts availability and service support.

Ideal Applications

The Westerbeke 30B Three Marine Diesel Engine is ideal for:

Sailboats and auxiliary propulsion systems
Small cruising yachts
Coastal and inland waterways
Owners seeking a compact, reliable, and fuel-efficient marine diesel engine

Key Advantages

Proven Westerbeke marine diesel reliability
Compact and space-saving design
Fuel-efficient 3-cylinder diesel engine
Freshwater cooling with heat exchanger
Smooth operation with reduced vibration and noise
Easy maintenance and long service life

Technical Specifications

General

Model: Westerbeke 30B Three
Engine Type: 4-stroke, vertical, water-cooled marine diesel
Fuel System: Mechanical fuel injection
Aspiration: Naturally aspirated
Number of Cylinders: 3 inline

Displacement & Combustion

Displacement: Approx. 1.1 liters
Bore × Stroke: Approx. 76 mm × 73 mm
Combustion Chamber: Indirect injection diesel

Performance

Rated Power: 30 HP (22.4 kW) @ 3,600 RPM
Rated Speed: 3,600 RPM
Torque Characteristics: Strong low- to mid-range torque for auxiliary propulsion
Fuel Consumption: Economical, dependent on load and propeller matching

Cooling & Lubrication

Cooling System: Freshwater cooling with heat exchanger
Lubrication System: Forced lubrication with oil pump
Engine Oil Capacity: Approx. 4.5 liters
Recommended Oil Type: Marine-grade diesel engine oil

Electrical System

Starting System: 12 V electric start
Alternator: 12 V marine alternator

Dimensions & Weight

Overall Dimensions (L × W × H): Approx. 840 × 480 × 580 mm
Dry Weight: Approx. 180–195 kg (engine only, excluding gearbox)

Drive & Installation

Rotation (Crankshaft): Counter-clockwise (viewed from flywheel end)
Drive Type: Inboard shaft drive
Compatible Gearbox: Westerbeke marine transmission
Mounting: Flexible marine engine mounts

Service & Adjustment

Valve Clearance (Cold): Intake: 0.20 mm / Exhaust: 0.25 mm
Firing Order: 1 – 2 – 3
Maintenance Access: Easy access to filters, belts, and routine service points

Westerbeke 30B Three

Westerbeke 30B Three Diesel Engine Sale