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REINTJES Hybrid System

RHS Hybrid System

60 – 630 kWe

A complete hybrid propulsion package — REINTJES gearbox, integrated electric motor / generator, frequency converter, and coupling. PTI, PTO, Boost, and Diesel modes deliver silent low-speed running, shaft generation, and emission-free maneuvering for fixed-pitch propeller vessels.

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REINTJES WAF/LAF 344 - 573 HS hybrid gearbox
REINTJES WAF/LAF 344 - 573 HS hybrid gearbox, alternate view
REINTJES WAF/LAF 665 - 1143 HS hybrid gearbox
REINTJES WAF/LAF 665 - 1143 HS hybrid gearbox, alternate view
REINTJES WVS/WLS 730 - 930 HS hybrid gearbox
REINTJES WVS/WLS 730 - 930 HS hybrid gearbox, alternate view

WAF/LAF 344 - 573 HS

Approved Quality

Two Decades of Hybrid Expertise

For more than 20 years REINTJES has supplied hybrid-ready gearboxes with a special PTO/PTI function for a wide range of applications. In 2011 the powertrain specialist took a step forward with a complete Hybrid System — integrating the gearbox, the electric motor and generator, the frequency converter, and the couplings into one engineered package.

REINTJES Hybrid Marine Propulsion System diagram

REINTJES Hybrid Marine Propulsion System

The REINTJES Hybrid System Includes

  • REINTJES gearbox
  • Integrated electric motor / generator
  • Frequency converter 60 - 630 kWe
  • Coupling
  • Compatible with various electric grids and configurable for different applications
Operation modes icon

Operation Modes

  • PTI mode - electric motor only
  • PTO mode - diesel engine for propulsion and shaft generator
  • Boost mode - electric motor and diesel engine combined for higher speed and thrust
  • Diesel mode - diesel engine only
  • Optimum design point of electric motor and diesel engine for propulsion power
Low speed icon

Low Speed

  • Easy dynamic positioning mode (DP), especially with FPP
  • Patrolling at low and very low speed (below idle engine speed) with excellent fuel economy and without limitation in time
Comfort icon

Comfort

  • Low noise and vibrations at low electrical speed
  • Night cruising in full comfort, energy from battery or high performance sound shield genset
Emission icon

Emission

  • Significant CO₂, SOₓ and NOₓ reduction due to high performance genset (IMO Tier III and EPA Tier 4)
  • Maneuvering in harbors without emissions by energy from battery
Maintenance icon

Maintenance

  • Better combustion in the main engine, no longer used for very low speed - resulting in less maintenance and longer working periods
  • Worldwide service
Operation Modes

Four Ways to Drive the Ship

To achieve maximum performance the REINTJES Hybrid System offers different operation modes. Easy switching between the electric motor / generator, the main engine, the genset, or both — by means of the hydraulically operated clutches — lets the ship use its power optimally and take full advantage of the entire power train.

PTI mode - Electric Motor only
PTI Mode

Electric Motor Only

The PTI (Power Take In) mode provides maximum comfort at slow speed. With the diesel engine not operating, the electric motor drives the ship for normal cruising, maneuvering and reversing. Noise and energy consumption are reduced to a minimum, with power coming from the genset or any other electric source onboard.

PTO mode - Diesel Engine for Propulsion and Shaft Generation
PTO Mode

Diesel Engine for Propulsion & Shaft Generation

In the PTO (Power Take Off) mode the electric motor is operated as a generator. It feeds electric power into the ship's grid and assists the existing generator sets. Optionally, the remaining energy can be fed into batteries and used later.

Boost mode - Electric Motor and Diesel Engine in Combination
Boost Mode

Electric Motor & Diesel Engine Combined — Higher Speed & Thrust

The Boost mode is an additional operating mode within PTI operation. It uses all the power of both the diesel engine and the electric motor together to drive the propeller — providing maximum thrust and/or supporting the diesel engine across different load conditions.

Planning a Hybrid Propulsion Project?

Contact Karl Senner for full RHS Hybrid System support — from sizing to integration

Contact Our Sales Team Today
Operating Profiles

Duty Cycles

REINTJES rates every marine gearbox against five duty profiles — from continuous commercial service to super-pleasure use — matched to how hard and how often the vessel runs.

C

Continuous Duty

Engine HoursUnlimited
OperationContinuous, little or no variation in speed & power
Hull FormsDisplacement
ApplicationsCommercial vessels
M

Medium Duty

Engine Hours4,000 hrs/year
OperationIntermittent, some variation in speed & power
Hull FormsPlaning, semi-planing, displacement, catamaran
ApplicationsPrivate, charter & commercial craft, naval & governmental ships
L

Light Duty

Engine Hours2,500 hrs/year
OperationIntermittent, large variation in speed & power
Hull FormsPlaning, semi-planing, displacement
ApplicationsPrivate, charter, sport & pleasure craft, naval & governmental ships
P

Pleasure Duty

Engine Hours500 hrs/year
OperationIntermittent, very large variation in speed & power
Hull FormsPlaning, semi-planing
ApplicationsPrivate, non-commercial sport & leisure activities
SP

Super Pleasure Duty

Engine HoursUnder 500 hrs/year
OperationIntermittent, very large variation and very low full-power share
Hull FormsPlaning, semi-planing
ApplicationsPrivate, non-commercial sport & leisure activities
Technical Data

Specifications

WAF/LAF 344 - 573 HS

Motor and Drive Supply

The electric motors and frequency converters shown here are a highlight of what we supply, not an all-inclusive list. Karl Senner also offers electric motors, drives for electric motors, AC switchboards, inverters for batteries and propulsion control systems, among others.

If the motor or drive you need is not in these tables, we can almost certainly source it — get in touch and we will find you what you need.

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Equipment

Versions

  • Reverse-reduction gearbox with controllable PTO / PTI
  • Hydraulically operated multi-disc clutches
  • Integrated electric motor / generator
  • Elastic couplings
  • Frequency converter (60 – 630 kWe)
  • Vertically offset configuration
  • Helical, case-hardened gearing
  • Compatible with various electric grids & configurable per application
  • Shaft BrakeA hydraulically operated multi-disc brake to assist reversing manoeuvres or to fix / stop the shaft on twin-screw vessels.
  • Trailing PumpMechanical or electric pump driven by the propeller shaft for regular, unlimited trailing operation — lubricates discs and bearings even when the input shaft isn't rotating.
  • Different Offset ConfigurationsWAF-RHS and WVS-RHS are available in vertical as well as horizontal offset configuration.
  • Power Take Off (PTO)The gearboxes can be fitted with additional Power Take Off for hydraulic pumps.
Real-World Applications

Where Hybrid Power Earns Its Keep

Harbour manoeuvring, slow-speed transits and running below main-engine idle — the RHS lets a vessel do all three on electric power, then hand back to the diesel when it is time to make way.

Geo Focus survey vessel underway
Geo Focus during survey operations, using hybrid propulsion for quieter, more efficient low-speed running.
Harbor Breeze Cruises passenger vessel El Escudo underway
El Escudo demonstrates RHS hybrid operation in passenger service, using electric power during harbor maneuvering and low-speed operation to reduce onboard noise and emissions.
Resources

Downloads

REINTJES Hybrid System Brochure

RHS Hybrid System 60 - 630 kWe — system overview, operation modes, WAF-RHS & WVS-RHS dimensions, frequency converter data, and options.

Download PDF

REINTJES Product Guide 2026

Complete REINTJES marine gearbox product guide including hybrid system options.

Download PDF

Planning a Hybrid Propulsion Project?

Contact Karl Senner for full RHS Hybrid System support — from sizing and selection to complete integration.

Request a Quote Service Inquiry

Or call us directly: +1 (504) 469-4000