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.
WAF/LAF 344 - 573 HS
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
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
- 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
- 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
- Low noise and vibrations at low electrical speed
- Night cruising in full comfort, energy from battery or high performance sound shield genset
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
- Better combustion in the main engine, no longer used for very low speed - resulting in less maintenance and longer working periods
- Worldwide service
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.
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.
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.
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 TodayDuty 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.
Continuous Duty
Medium Duty
Light Duty
Pleasure Duty
Super Pleasure Duty
Specifications
WAF/LAF 344 - 573 HS
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.
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
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.
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 PDFREINTJES Product Guide 2026
Complete REINTJES marine gearbox product guide including hybrid system options.
Download PDFPlanning a Hybrid Propulsion Project?
Contact Karl Senner for full RHS Hybrid System support — from sizing and selection to complete integration.
Or call us directly: +1 (504) 469-4000