Description

Cummins QSM11 700HP Marine Diesel Engine

The Cummins QSM11 700HP Marine Diesel Engine is a high-performance inboard marine propulsion engine engineered for vessels that require maximum power output, high torque, and dependable operation under continuous marine duty cycles. Built on the proven Cummins QSM11 marine engine platform, this 10.8-liter inline six-cylinder turbocharged diesel engine delivers exceptional propulsion power and reliability for offshore sportfishing yachts, commercial fishing vessels, patrol boats, passenger ferries, and heavy-duty offshore service vessels.

The Cummins QSM11 series is widely recognized for its advanced electronic fuel system, heavy-duty internal construction, and high horsepower capability. The platform delivers a power range of approximately 295 to 705 horsepower, positioning the 700HP configuration among the highest-output ratings available in this engine family for high-performance marine propulsion applications.

At Coastal Wave Marine, the Cummins QSM11 700HP marine diesel engine is supplied as a brand-new genuine Cummins marine propulsion engine, complete with standard manufacturer accessories and configuration options suitable for new vessel construction, commercial marine fleets, and marine repower installations worldwide.

Engine Architecture and Performance

The Cummins QSM11 700HP marine propulsion engine features a four-stroke inline six-cylinder configuration with a displacement of 10.8 liters, engineered to deliver powerful torque and dependable propulsion performance across the engine’s operating range.

A key feature of the engine is the High-Pressure Common Rail (HPCR) electronic fuel injection system, which precisely controls fuel delivery to each cylinder. This system improves combustion efficiency, fuel economy, throttle response, and reduced exhaust emissions, ensuring optimal engine performance in demanding marine environments.

The engine also utilizes a turbocharged and seawater-aftercooled air intake system, which increases intake air density entering the combustion chamber. This allows the engine to generate 700 horsepower of dependable propulsion power while maintaining stable operating temperatures and improved combustion efficiency.

Integrated Cummins Quantum electronic engine management continuously monitors critical parameters such as engine speed, fuel pressure, load conditions, and temperature. This intelligent control system ensures optimized engine performance, improved diagnostics capability, and enhanced protection for internal engine components.

Because of its high torque output, durable marine construction, and excellent reliability, the Cummins QSM11 700HP inboard diesel engine is widely selected by shipyards and vessel operators searching for Cummins marine engines for sale, 700HP marine diesel engines, high-performance marine propulsion engines, or Cummins boat engines for vessel repower projects.

Cummins QSM11 700HP Marine Engine Specifications

SpecificationDetails
Engine ModelCummins QSM11 Marine Diesel
Rated Power700 HP
Engine ConfigurationInline 6-Cylinder, 4-Stroke Diesel
Displacement10.8 Liters (661 cu in)
Bore × Stroke125 mm × 147 mm
AspirationTurbocharged and Aftercooled
Fuel SystemHigh-Pressure Common Rail (HPCR)
Electronic ControlCummins Quantum ECM
Rated Engine SpeedApprox. 2300 RPM
Peak TorqueUp to ~2,300 Nm depending on rating
Cooling SystemHeat Exchanger with Seawater Cooling
Approx. Dry Weight~1188 kg (≈2620 lb)
ApplicationInboard Marine Propulsion
Engine ConditionNew
ManufacturerCummins Marine

The QSM11 marine platform is designed with heavy-duty marine components and can produce torque levels exceeding 2,300 Nm, enabling strong propulsion performance for heavy vessels and offshore applications.

Technical Features and Advantages

High-Output Marine Propulsion

The Cummins QSM11 700HP diesel engine provides powerful acceleration and sustained propulsion performance for high-speed offshore vessels and commercial marine applications.

High-Pressure Common Rail Fuel Injection

The HPCR fuel system ensures precise fuel atomization and combustion efficiency, improving fuel economy, throttle response, and reduced smoke emissions.

Advanced Electronic Engine Management

The Cummins Quantum ECM monitors engine performance parameters and provides real-time diagnostics to optimize engine operation and reliability.

Turbocharged Aftercooled Air System

The turbocharger and aftercooler increase intake airflow density, allowing the engine to maintain consistent horsepower output even under heavy marine loads.

Heavy-Duty Marine Construction

The engine incorporates marine-grade cast-iron components, corrosion-resistant materials, and heavy-duty cooling systems, designed to withstand continuous marine operation and harsh offshore environments.

Typical Vessel Applications

The Cummins QSM11 700HP marine diesel engine is commonly installed in:

  • Offshore sportfishing yachts

  • High-performance cruising vessels

  • Commercial fishing boats

  • Patrol and security vessels

  • Offshore service and supply boats

  • Passenger transport vessels

Buyers searching online for Cummins marine engines for sale, 700HP marine diesel engines, Cummins inboard propulsion engines, or Cummins QSM11 marine engines for repower projects frequently choose the QSM11 platform because of its strong torque output and proven reliability in demanding marine environments.

Global Supply from Coastal Wave Marine

Coastal Wave Marine supplies new Cummins marine propulsion engines, marine generators, marine gearboxes, and complete propulsion systems to shipyards, vessel owners, and commercial marine fleets worldwide.

Our marine engine supply services include:

  • Worldwide export shipping and logistics coordination

  • Professional export crating for sea or air freight

  • Marine transmission pairing options

  • Engine configuration consultation

  • Support for marine repower and new vessel construction

If you are looking to buy a Cummins QSM11 700HP Marine Diesel Engine, Coastal Wave Marine provides genuine Cummins propulsion engines with worldwide delivery and professional marine supply support. Contact our team to request pricing, configuration options, and shipping arrangements for your vessel or marine fleet.