What Steerprop Ltd does

Steerprop Ltd is a Finnish privately held designer and manufacturer of azimuth marine propulsion systems, headquartered in Rauma, Finland, with subsidiaries in the United States (Steerprop Inc., Conroe TX) and Singapore (Steerprop Asia PTE. LTD.) and additional offices in Vantaa and Jyväskylä. Founded in 1999/2000, the company builds five core product families — contra-rotating propellers (CRP and CRP ECO), Arctic propulsors (ARC and PULL ARC), tunnel thrusters (TT), retractable azimuth thrusters (R), and ducted Pushing units — covering power ranges from roughly 500 kW to 15,000 kW, with variants integrating permanent magnet motors (LM). It is one of the few suppliers qualified for polar-class icebreakers, with one in three azimuth icebreakers worldwide using Steerprop technology and 600,000+ operational hours accumulated on first-generation Arctic thrusters.

The company operates a project-based enterprise sales model with dedicated segment directors for Arctic & Naval, Cruise & Ferry, Offshore, and Tugs & Workboats, supported by regional sales managers and channel partners across Europe, North America, Asia, and the Middle East. Revenue is generated primarily through customized hardware sales (built-to-order propulsors for specific vessels), supplemented by original spare parts, 24/7 field service and technical support, subscription-based Steerprop Care condition monitoring, and recently announced simulator-based training via Aboa Mare. Customers include the Alfred Wegener Institute, Canadian Coast Guard, Jan De Nul, Maersk, DOF Group, Celebrity Cruises, TS Laevad, Østensjø Rederi, and major shipyards such as TKMS, Seaspan, and GONDAN. Recent major contracts include the propulsion package for Germany's new Polarstern polar research icebreaker (world's largest mechanical azimuth propulsors, 9 MW per unit) and the Canadian Coast Guard Multi-Purpose Vessels program covering six PC4 vessels.

Pricing is project-specific and not publicly disclosed. The company leverages decades of in-house expertise in ice-class mechanics, hydrodynamics, electrical engineering, and certification, alongside a global 24/7 service network, to position propulsion systems around 30-year service life, low underwater radiated noise, and predictive maintenance. With 101-250 employees, two wholly-owned international subsidiaries, and a diversified customer base spanning government, research, offshore, cruise, ferry, tug, and naval end markets, Steerprop operates as a mid-sized specialty OEM competing in a concentrated niche where qualification barriers and lifecycle service obligations materially shape customer choice.

Name

Steerprop Ltd

Legal name

Steerprop Ltd.

Website

https://steerprop.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

101–250 employees

Short description

Steerprop Ltd is a Finnish privately held OEM designing and manufacturing azimuth marine propulsion systems — CRP, Arctic ARC/PULL ARC, tunnel, and retractable thrusters — for icebreakers, cruise and ferry, offshore, tug, and naval vessels globally.

Ownership category

akta.pro rank

Product category

Marine Azimuth Propulsion Systems

NAICS

Engine, Turbine, and Power Transmission Equipment Manufacturing (33361), Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing (333612)

SIC

Engines & Turbines (3510)

akta.pro primary industry

Azimuth Thrusters & Podded Propulsion (IMAJAHAF)

akta.pro secondary industries

Marine Hybrid & Electric Propulsion Systems (IMAJAHAC), Propellers & Waterjets (IMAJAHAE), Marine Generators, Alternators & Power Electronics (Gen-sets, VFDs, converters) (IMAJAHAI), Propulsion, Power & Energy Systems Design (Diesel, Hybrid, Electric, Alternative Fuels) (IMAJAGAE), Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades) (IMAJAHAN)

Keywords

• Azimuth propulsion systems
• Contra-rotating propellers
• Marine thruster manufacturing
• Ice-class propulsion
• Tunnel thruster systems

Headquarters

HQ city

Rauma

HQ country

Finland

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

1. Propulsion Systems Hardware Sales: Sale of customized azimuth propulsion units including CRP, tunnel thrusters, retractable thrusters, and ARC arctic propulsors. Products are built to order for specific vessel applications with power ranges from 500 kW to 15,000+ kW.
2. Original Spare Parts: Aftermarket supply of original spare parts for installed propulsion systems. Direct sales and logistics support through service team.
3. Steerprop Care Condition Monitoring: Subscription-based condition monitoring service providing continuous data on propulsor health and performance. Enables predictive maintenance and lifecycle cost optimization.
4. Field Service and Technical Support: 24/7 global service support, installation, commissioning, and maintenance services. Includes factory acceptance tests and operator training.
5. Simulator-Based Training Services: Cooperation with Aboa Mare for tailored simulator training services covering vessel handling, maneuvering and operational decision-making for vessels equipped with Steerprop propulsion.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels8 records

Core offering

Steerprop designs, manufactures, and services azimuth propulsion systems for commercial and naval marine vessels. Its product portfolio includes contra-rotating propellers (CRP/CRP ECO), Arctic propulsors (ARC/PULL ARC), tunnel thrusters (TT), retractable azimuth thrusters (R), and ducted pushing units, with power ranges from 500 kW to 15,000 kW. The company delivers custom-engineered propulsion packages including main propulsion, auxiliary thrusters, and hydrodynamic integration, supported by a 24/7 service network and Steerprop Care condition monitoring.

Product overview

Steerprop Ltd is a Finnish designer and manufacturer of azimuth propulsion solutions comprising multiple product lines: CRP/CRP ECO (contra-rotating propellers, 500-15,000 kW), ARC/PULL ARC (arctic propulsors up to 12,000 kW), TT (tunnel thrusters, 500-7,000 kW), R (retractable azimuth thrusters, 900-3,500 kW), and Pushing (ducted azimuth units). Key variants include LM units with integrated permanent magnet motors and SP series models (SP 50 W D dual-end, SP 40 TT ARC tunnel thrusters, SP 160 PULL ARC). The portfolio is complemented by Steerprop Care condition monitoring service. Products serve diverse vessel segments including icebreakers, cruise, ferries, offshore, tugs, workboats and naval applications, with notable recent launches including the world's largest mechanical azimuth propulsors for the Polarstern research icebreaker.

Differentiator

Problem solved

Functional benefit

Brands

• Steerprop Care: Condition monitoring service for propulsion units enabling predictive maintenance and lifecycle support.
• Steerprop CRP
• Steerprop ARC / PULL ARC
• Steerprop TT
• Steerprop R

Products and services

• Steerprop CRP (Contra-Rotating Propeller)

Quantifiable outcome

• 600,000+ operational hours without bearing replacement or gearbox opening on first Arctic thrusters
• +3 more outcomes

Named customers16 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• Aboa MarecoreStrategic or Co-development Partner · 30 March 2026Cooperation agreement covering simulator-based training services for vessels equipped with Steerprop propulsion systems. Steerprop can order tailored simulator training from Aboa Mare focusing on vessel handling, maneuvering and operational decision-making. Training programmes support safe and efficient operation across range of operating conditions and vessel types.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• ABB Marine & Ports: ABB's Azipod is the most recognized integrated azimuth propulsion system globally, serving cruise, offshore, and ice-class vessels. Directly competes with Steerprop in azimuth thrusters but operates at much larger scale across the full marine electrical scope.
• Kongsberg Maritime: Large marine technology group offering thrusters, propulsion controls, and integrated vessel systems. Competes with Steerprop in offshore and naval vessel markets as part of a much broader marine portfolio.
• Wärtsilä Corporation: Finnish marine technology incumbent producing engines, propulsion systems (including controllable pitch and waterjets), and integrated ship solutions. Comparable in geography and customer base but operates at significantly larger scale with broader portfolio.
• Rolls-Royce (Kamewa / Bergen) marine propulsion: Heritage supplier of marine propulsion (formerly Kamewa) including waterjets and controllable-pitch propellers for naval and commercial vessels. Comparable in ice-class and naval propulsion engineering, though Rolls-Royce's marine portfolio is broader and includes engines.
• Hyundai Heavy Industries (HiMSEN): South Korean marine engine and propulsion manufacturer supplying engines, propellers, and integrated systems to Asian shipbuilders. Competes with Steerprop in commercial vessel segments served by Korean yards, though at much larger volume.
• MAN Energy Solutions: Major marine engine and propulsion system supplier (two-stroke marine engines, propellers, turbochargers) for commercial shipping and naval. Comparable customer base in naval and large commercial vessel segments, though focused on the engine side rather than azimuth thrusters.
• Caterpillar Marine: Supplies marine engines, propulsion controls, and integrated systems for tugs, workboats, and offshore vessels. Comparable in tug/workboat segment but competes at the propulsion system level rather than the specialized azimuth thruster level.

Direct peers

• Brunvoll AS: Norwegian manufacturer of azimuth thrusters, tunnel thrusters, and complete propulsion packages for offshore, naval, and cruise vessels. Closest direct peer to Steerprop with overlapping product portfolio and customer base in northern European shipyards.
• Schottel GmbH: German maker of azimuth thrusters (SCHOTTEL propulsors) and rudderpropellers for tugs, offshore, and naval applications. Directly competes with Steerprop across tugs/workboats and naval segments with comparable product specifications.
• Nakashima Propeller Co. Japanese manufacturer of marine propellers and integrated propulsion systems for commercial and naval vessels. Comparable product scope in fixed-pitch and controllable-pitch propeller systems serving similar shipyard customers in Asia.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xtwitter.com/SteerpropLtd
• YouTubeyoutube.com/@steerpropltd.2946
• LinkedInlinkedin.com/company/steerprop

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries2 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Steerprop Ltd