Marine Engines

Yanmar diesels are the lightest, most dependable inboard engines available for sailboats. Smooth and quiet, packed with industry-leading technology, Yanmar engines are underpinned by the goal to develop more power for less weight.

Product range for Yanmar sailing engines includes:

• GM/YM Series Shaftdrive 9-29 mhp
• GM/YM Series Saildrive 9-29 mhp
• JH5 Series Shaftdrive 39-54 mhp
• JH5/4T Series Saildrive 39-75 mhp
• JH3/4(T) Series Shaftdrive 75-125 mhp

Yanmar engines are built to cope with extreme conditions on the water. Because Yanmar manufactures virtually all its own components, you can be assured its engines are produced to the strictest tolerances and highest quality.

Product range for Yanmar powerboat engines includes
Shaft and jet drive models:

• LHA Series 160-240 mhp
• LPA  Series 315 mhp
• BY3 series 150-260 mhp
• 8LV series 320-370 mhp
• LY2 Series 330-440 mhp
• LY3 Series 380-480 mhp

Sterndrive models:

• LHA Series 240 mhp
• BY3 Series 150-260 mhp
• 8LV Series 320-370 mhp

Yanmar delivers reliable power with exceptional fuel economy, lower emissions and quiet operation. Owners of commercial fishing boats, fishing charters, and tourist vessels choose Yanmar for these reasons, as well as for overall lower operating costs.

Product range for Yanmar commercial engines includes:

• GMY Series 13.2 mhp
• JHY Series 35 mhp
• CH3 Series 78-280 mhp
• 6CXB Series 360-509 mhp
• 6HA2 Series 278-405 mhp
• 6HY Series 500-700 mhp
• 6AY Series 659-911 mhp
• 12AY Series 1200-1822 mhp

Torqeedo’s high-tech outboard motors sustainably convert battery energy into clean, powerful performance. All motors are equipped with integrated onboard computers.

From 1 to 80hp, Torqeedo motors achieve best overall efficiency in their class. Batteries and motors are waterproofed to IP67. Dramatically reduce air and water pollution with advanced Torqeedo technology. Sustainable charging options include a solar charging device and a solar charging controller.

Torqeedo’s superior drive technology means more options, greater range, lower carbon footprint for electric boats. Plus: lower engine weight means lower operational power requirement!

Torqeedo’s six-tier safety system is the most comprehensive safety regime in the marine industry.

(NZ release first quarter 2017)

Optimised for reducing life-cycle cost, Oxe diesel is a favoured solution for government services, coastguard, search and rescue operations and commercial applications such as fishing, oil and gas.
Robust Oxe turbo-charged diesel outboards offer a patented high torque belt drive, lower fuel consumption and surprisingly quiet running. Additionally, Oxe is highly rated for fire safety, low speed control and cabin heating.

If one does not know to which port one is sailing, no wind is favourable.

Lucius Annaeus Seneca

PowerTech™ 4045D Marine Engine

Smart and durable, this 4-cylinder, 4.5L diesel engine has a compact design for easy installation. Fewer external connections means fewer hoses or fittings that could leak or break. Internal balancers offer low noise and vibration for crew comfort.

• Watercooled Exhaust Manifold
• Replaceable Wet-type Cylinder Liners
• Internal Balancers
• Corrosion Resistant Components

PowerTech™ 4045T Marine Engine

Smart and durable, this 4-cylinder, 4.5L diesel engine has a compact design for easy installation. Fewer external connections means fewer hoses or fittings that could leak or break. Internal balancers offer low noise and vibration for crew comfort.

• Watercooled Exhaust Manifold
• Replaceable Wet-type Cylinder Liners
• Internal Balancers
• Corrosion Resistant Components

PowerTech™ 6068T Marine Engine

Designed for efficiency, this 6-cylinder, 6.8L diesel engine delivers higher torque at a low-rated rpm to turn larger propellers at lower speeds.

• Watercooled Turbocharger and Exhaust Manifold
• Replaceable Wet-type Cylinder Liners
• Corrosion Resistant Components
• Either-side Service

PowerTech™ 6.8L Marine Engines

The 6.8L six-cylinder engine is offered as either a propulsion or gen drive engine in either keel cooled or heat exchanger configurations. The engines are either turbocharged, non-aftercooled, turbocharged with jacket water aftercooling or turbocharged with seawater after cooling. The propulsion engines feature constant power to 400 rpm below rated speed, making these engines an excellent choice for launches, work boats, trawler yachts, and patrol craft.

• Watercooled Exhaust Manifold
• Replaceable wet-type cylinder liners
• Corrosion Resistant Components
• Either-side Service

PowerTech™ 6.8L Marine Engine

The 6.8L six-cylinder engine is offered as either a propulsion or gen drive engine in either keel cooled or heat exchanger configurations. The engines are either turbocharged, non-aftercooled, turbocharged with jacket water aftercooling or turbocharged with seawater after cooling. The propulsion engines feature constant power to 400 rpm below rated speed, making these engines an excellent choice for launches, work boats, trawler yachts, and patrol craft.

• High-Pressure Common Rail Fuel System
• John Deere Electronic Controls
• Watercooled Turbocharger and Exhaust Manifold
• Replaceable Wet-Type Cylinder Liners

PowerTech™ 9.0L Marine Engine

The 9.0L marine engine is cooled by sea water through a heat exchanger. It is turbocharged and aftercooled and has a water jacketed exhaust manifold and turbocharger housing. The propulsion engines feature constant power to 400 rpm below rated speed making these engines an excellent choice for patrol craft, launches, work boats, fishing boats, trawler yachts and sport fishing boats.

• Watercooled Turbocharger and Exhaust Manifold
• Directed Top-liner Cooling
• Replaceable Wet-type Cylinder Liners
• Gear Auxiliary Drive

PowerTech™ 13.5L Marine Engine

If you have a high horsepower marine application you’ll definitely want to check out our new 13.5L engine. It delivers reliable and durable power up to 559 kW (750 hp) in a compact, heat exchanger cooled configuration with side or front service locations.

More horses in the engine room aren’t the only things you’ll like about our new 13.5L. Like all John Deere marine engines, it also features low noise, low vibration, and excellent fuel economy. And with high torque at low RPM, you get excellent vessel control and manoeuvring. Enjoy all this, along with more power and flexibility, with our new 61 35SFM75 marine engine.

• Watercooled Turbocharger and Exhaust Manifold
• Directed Top-liner Cooling
• Replaceable Wet-type Cylinder Liners
• Heat Exchanger

REVOLUTIONARY ‘SPACEBALL’ DESIGN

MINIMISES ENGINE WEAR.

For its size, Dtorque’s unique 800cm3 reciprocating two-cylinder diesel powerhead design produces an impressive 50hp. More important is its 111Nm torque output, which outstrips that of most of the latest 70hp petrol outboards on the market. But what’s most impressive is minimal vibration.

The secret behind that is the company patented ‘Spaceball’ design. The aluminium cylinder block houses dual crankshafts which rotate in opposite directions to absorb the considerable vibration that a conventional small two-cylinder diesel engine would normally generate.

For the user, the benefits are immediately apparent. Less vibration, less noise, and lighter boat handling without having to continually wrestle with the tiller to correct for torque steering all mean less operator fatigue – and less stress on the engine, too.

The engineering refinement doesn’t end there. Common-Rail fuel injection — rare indeed in diesel engines as small as this one — and turbocharging with integrated charge air cooling are just two of a list of features which contribute to performance, fuel saving and lower emissions.

All of the moving parts of the vertically-mounted Dtorque engine are clearly seen in this CADCAM screen display. Central to the assembly are the dual crankshafts with their miniature counterrotating flywheels. Light weight connecting rods are connected to crankshafts by two inline pistons, while aspiration is provided by four camshaft-driven valves per cylinder.

This two-dimensional diagram shows clearly how the two reciprocating pistons complement each other at the full extent of their up and down strokes. It may look simple, but the asymmetric engine cycle with its short compression stroke, longer intake stroke and shorter expansion stroke required particular attention from the Dtorque engineering design team. The benefit, however, is improved thermal efficiency with an extended piston work stroke.

The end result of Dtorque´s engineering design and development work is a remarkably neat and compact engine package, as seen in this overhead rendering. As in the tradition of the finest Swiss mechanical watch making, all of the vital components fit together with in a beautifully elegant and intricate symmetry.