Yanmar 6HYM-WET 700HP Diesel Marine Engine – Power, Reliability & Efficiency by JB Marine GmbH

JB Marine GmbH, Germany’s trusted supplier of Yanmar marine diesel engines, proudly introduces the Yanmar 6HYM-WET 700HP Diesel Marine Engine, a powerhouse designed for commercial vessels, offshore workboats, fishing fleets, and luxury yachts.

Delivering 700HP (515 kW) at 2100 RPM, the 6HYM-WET combines Yanmar’s legendary engineering reliability with modern fuel efficiency and emissions compliance. Built for durability under extreme marine conditions, this engine ensures consistent performance, lower fuel consumption, and minimal environmental impact.

Overview – Precision Engineering for Demanding Marine Applications

The Yanmar 6HYM-WET is a 6-cylinder, in-line marine diesel engine designed for heavy-duty applications.
With direct injection, a turbocharger with an intercooler, and a heat exchanger cooling system, it delivers high power output with exceptional fuel economy.

Ideal for operators who demand long-term reliability, the 6HYM-WET meets IMO Tier II emissions standards, and optional upgrades make it fully compliant with IMO Tier III regulations.

Why Choose the Yanmar 6HYM-WET Diesel Marine Engine?

High-Powered, Consistent Performance

Produces 700HP at 2100 RPM, providing the torque and reliability required for demanding commercial and offshore operations.

Superior Fuel Efficiency

Equipped with Yanmar’s direct injection system and turbo-intercooled design, the 6HYM-WET maximizes power output while minimizing fuel usage — reducing operational costs and extending range.

IMO Tier II Environmental Compliance

The advanced combustion system reduces emissions and ensures compliance with International Maritime Organization (IMO) standards. Optional Tier III upgrades are available for eco-sensitive zones.

Rugged Durability Under Heavy Load

A robust engine block, reinforced crankshaft, and heat exchanger cooling system ensure long service life, even under continuous operation in harsh marine conditions.

Compact & Flexible Configuration

Compact design and flexible gearbox options make it suitable for new installations or repowering older vessels without major structural modifications.

Certified Global Reliability

Type-approved by leading marine classification societies, including NK, ABS, BV, RINA, and CCS, ensuring proven reliability and global operational approval.

Technical Specifications – Yanmar 6HYM-WET

Complete Engine Package by JB Marine GmbH

Each Yanmar 6HYM-WET Diesel Marine Engine supplied by JB Marine GmbH comes as a complete, installation-ready package that includes:

• Yanmar 6HYM-WET Engine

• Marine Gearbox: YXH-170L or YXH-240L (configured per vessel)

• Turbocharger + Intercooler

• Heat Exchanger Cooling System

• Fuel Pre-Filter with Water Separator

• Flexible Engine Mounts

• Exhaust Mixing Elbow

• Alternator (24V / 60A)

• Starter Motor (24V / 5.0kW)

• Freshwater Expansion Tank

• NMEA2000 Engine Monitoring System

• Belt Safety Cover

• Comprehensive Installation & Maintenance Manual

Optional Accessories

Enhance your vessel’s performance and operational flexibility with genuine Yanmar accessories, available through JB Marine GmbH:

• High-Riser Exhaust Mixing Elbow

• Secondary Alternators (24V–80A / 12V–125A)

• Fuel Polishing System

• Hot Water Kits with Cocks

• Extended Wiring Harness

• Spare Parts Kit for onboard maintenance

• IMO Tier III Compliance Kit

All accessories are factory-tested and certified for full compatibility with Yanmar systems.

Warranty & After-Sales Support

Your Yanmar 6HYM-WET Diesel Marine Engine is protected by a 5-year manufacturer’s warranty, covering defects in materials and workmanship.

JB Marine GmbH enhances your investment with:

• Authorized Yanmar service and certified installation

• Genuine spare parts availability across Europe

• Technical support and maintenance programs

• Fast, secure global shipping

We ensure your Yanmar engine continues performing at peak efficiency throughout its lifecycle.

Applications – Built for Power and Endurance

The Yanmar 6HYM-WET is designed to meet the needs of diverse marine sectors:

• Commercial Workboats: Reliable torque and power for continuous-duty applications.

• Fishing Vessels: High pulling strength for trawling, hauling, and towing.

• Luxury Yachts: Smooth, quiet propulsion for premium comfort and performance.

• Offshore Support Vessels: Built to withstand demanding offshore environments and extended operational hours.

Whether for industrial power or leisure cruising, the 6HYM-WET offers efficiency, strength, and reliability at sea.

Frequently Asked Questions (FAQs)

What types of vessels can the 6HYM-WET engine power?
Ideal for commercial boats, fishing vessels, offshore support craft, and high-end yachts requiring powerful and efficient propulsion.

How fuel-efficient is the Yanmar 6HYM-WET?
Its direct injection and turbo-intercooled design ensure optimized combustion and excellent fuel economy under heavy load.

Does it comply with emissions regulations?
Yes, it meets IMO Tier II standards and can be upgraded for Tier III compliance.

Can this engine handle long operational hours?
Absolutely — built for continuous duty with high endurance and minimal maintenance requirements.

What’s included in the package?
Engine, gearbox, turbocharger, alternator, exhaust components, and complete installation manual.

What’s covered by the warranty?
Defects in materials and workmanship for 5 years, backed by Yanmar and JB Marine GmbH’s service guarantee.

Is it suitable for repowering projects?
Yes — compact, adaptable, and ideal for retrofits and vessel upgrades.

Why Choose JB Marine GmbH – Yanmar Diesel Experts in Germany

At JB Marine GmbH, we specialize in delivering complete Yanmar propulsion systems and professional marine solutions.
Our clients benefit from:

• Authorized Yanmar dealership and service center

• Factory-certified engineers and technicians

• Competitive pricing and expert consultation

• Fast European distribution and spare parts logistics

• Dedicated after-sales support for every vessel class

We ensure every installation meets Yanmar’s strict quality and performance standards.

Contact JB Marine GmbH – Order Your Yanmar 6HYM-WET 700HP Diesel Marine Engine

Equip your vessel with the unmatched power and reliability of the Yanmar 6HYM-WET 700HP Diesel Marine Engine.
Contact JB Marine GmbH today for pricing, configuration options, and technical consultation.