Contra-Rotating Propulsion
Counter-Rotating Propeller Systems with up to 15% Higher Efficiency
Contra-rotating propulsion recovers swirl energy with two counter-rotating propellers to improve hydrodynamic efficiency by up to 15%. MPSI engineers contra-rotating systems for ferries, coastal craft and offshore utility vessels seeking lower fuel consumption and reduced cavitation.
Propulsion Families
Azimuth Thrusters
360-degree steerable propulsion delivering maximum maneuverability and high bollard pull for tugs, ferries, and workboats.
Engineering & Design Overview
Engineered for extreme reliability and hydrodynamic efficiency, MPSI Azimuth Thrusters combine heavy-duty bevel gears with precision steering mechanisms available in Z-drive and L-drive configurations.
Suitable Vessel Applications:
Standard Models & Parameters
View All Datasheets & GA »| Model SKU | Power Range | Propeller Dia. | Installation | Drive Type | Action |
|---|---|---|---|---|---|
| MPSI-ZT-2500 | 1200.00 – 2500.00 kW | 1800.00 – 2600.00 mm | Z-Drive Well Installation | Diesel Direct / Electric Motor | Select » |
Bow & Tunnel Thrusters
High-thrust auxiliary maneuvering systems designed for precise harbor docking, station keeping, and dynamic positioning.
Engineering & Design Overview
Available with fixed pitch (FPP) or controllable pitch (CPP) propellers, driven by electric motors, diesel engines, or hydraulic drives with robust tunnel integrations.
Suitable Vessel Applications:
Standard Models & Parameters
View All Datasheets & GA »| Model SKU | Power Range | Propeller Dia. | Installation | Drive Type | Action |
|---|---|---|---|---|---|
| MPSI-TT-1000 | 200.00 – 1000.00 kW | 900.00 – 1600.00 mm | Transverse Hull Tunnel | Electric / Hydraulic / Diesel | Select » |
Contra-Rotating Propulsion
Dual-propeller counter-rotating systems providing up to 15% improved hydrodynamic efficiency and superior thrust recovery.
Engineering & Design Overview
Ideal for high-efficiency coastal vessels, passenger ferries, and offshore utility craft seeking optimal fuel economy and reduced cavitation.
Suitable Vessel Applications:
Standard Models & Parameters
View All Datasheets & GA »Fixed Pitch Propellers
Custom-designed marine propellers manufactured in high-grade nickel-aluminum bronze (Cu3) for commercial and utility vessels.
Engineering & Design Overview
Hydrodynamically optimized blade geometries engineered through computational fluid dynamics (CFD) to maximize open-water efficiency while mitigating vibration.
Suitable Vessel Applications:
Standard Models & Parameters
View All Datasheets & GA »Deck-Mounted Thrusters
Self-contained propulsion units installed directly on deck for barges, dredgers, engineering pontoons, and shallow draft vessels.
Engineering & Design Overview
Features integrated diesel engine drive, elevation tilting mechanism for shallow water maintenance, and 360-degree azimuth steering.
Suitable Vessel Applications:
Standard Models & Parameters
View All Datasheets & GA »| Model SKU | Power Range | Propeller Dia. | Installation | Drive Type | Action |
|---|---|---|---|---|---|
| MPSI-DMT-600 | 150.00 – 600.00 kW | 800.00 – 1400.00 mm | Deck Bolted / Elevation Jack | Direct Diesel Engine Package | Select » |
Rudder Propellers
Integrated propulsion and steering solution replacing conventional rudder-shaft arrangements with enhanced steering response.
Engineering & Design Overview
Combines propulsion thrust and directional steering into a single compact unit for agile maneuvering in congested waterways.
Suitable Vessel Applications:
Standard Models & Parameters
View All Datasheets & GA »Specialized Thruster Systems
Customized maneuvering thrusters including active rudders, retractable thrusters, and specialized DP systems.
Engineering & Design Overview
Tailored engineering packages built to meet bespoke vessel geometries and demanding offshore operational envelopes.
Suitable Vessel Applications:
Standard Models & Parameters
View All Datasheets & GA »Active Rudder Thrusters (ART)
Active rudder thruster (ART) is an active propulsion device integrating propeller function and rudder function. Its underwater part can provide efficient rudder thrust through active ± 42 degree rotation.
Engineering & Design Overview
Active rudder thruster (ART) is an active propulsion device integrating propeller function and rudder function. Its underwater part can provide efficient rudder thrust through active ± 42 degree rotation. The device integrates the forward and reverse functions of the gearbox, the reduction ratio, the thrust of the propeller and the function of the rudder. The long shaft of the conventional propeller arranged horizontally in the hull is arranged vertically, the power engine room is placed behind, and the main engine room and the steering engine room are combined into one, so as to improve the ship's storage capacity and simplify the design and installation of the ship's propulsion power. It truly realizes the power modular design of conventional ships.
Suitable Vessel Applications:
Standard Models & Parameters
View All Datasheets & GA »| Model SKU | Power Range | Propeller Dia. | Installation | Drive Type | Action |
|---|---|---|---|---|---|
| MPSI-ART-1000 | 200.00 – 1000.00 kW | 1000.00 – 1800.00 mm | Integrated Rudder Well | Electric Motor / Diesel Direct | Select » |
| MPSI-ART-2500 | 1000.00 – 2500.00 kW | 1800.00 – 2800.00 mm | Integrated Rudder Trunk | Diesel Geared / Hybrid Electric | Select » |
Contra-Rotating Propulsion (CRP): Hydrodynamic Fuel Savings & Power
Contra-rotating propulsion (CRP) systems employ two coaxial propellers rotating in opposite directions. The aft propeller recovers rotational energy lost in the propeller slipstream slip from the forward propeller, converting rotational swirl into productive forward axial thrust.
This counter-rotation principle yields between 10% and 15% net hydrodynamic fuel efficiency improvements compared to conventional single-screw arrangements, dramatically lowering operational fuel expenditure (OPEX) and reducing greenhouse emissions.
MPSI supplies contra-rotating propulsion packages from 300 kW to 4,000 kW for passenger ferries, fast utility craft, and coastal supply vessels demanding extended operating ranges and reduced propeller-induced hull vibration.
Contra-Rotating Propulsion: Frequently Asked Questions
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