What Jastram does

Jastram GmbH & Co. KG is a fourth-generation, family-owned German manufacturer headquartered in Hamburg, founded in 1889 with marine thruster production dating to 1950. The company designs and produces transverse thrusters (50 kW–1,200 kW), rudder propellers (50 kW–450 kW), variable frequency drive systems (50 kW–1.2 MW), and integrated control electronics used for ship maneuvering. Jastram's product portfolio is anchored by a proprietary Active Noise Reduction (ANR) technology that reduces cavitation noise by up to 15 dB(A), and the company holds DNV Type Approval, ES-TRIN compliance, and ISO 9001 certification, with a guaranteed service life exceeding 40 years and lifelong spare-parts availability.

The technology platform spans mechanical propulsion hardware and the drive-and-control electronics that govern it, supported by computational engineering using CFD and FEM. Jastram's installed base exceeds 4,000 thrusters across luxury yachts, government/defense vessels, inland navigation, offshore/service vessels, and commercial marine segments, with end-customers including shipyards, vessel operators, and government agencies.

Jastram generates revenue through B2B direct sales supplemented by a global distributor and channel-partner network spanning EMEA, APAC, and AMER (anchored by its Canadian subsidiary, Jastram Technologies Ltd.). Monetization combines hardware sales, aftermarket service and spare parts, engineering consulting, and integrated logistic support (ILS) documentation. The business is privately held with no external funding rounds, and revenue, headcount, and customer-level financial detail are not publicly disclosed.

Name

Jastram

Legal name

Jastram GmbH & Co. KG

Website

https://jastram.net

Company type

Private

Founded year

1950

Operating status

Operating

Headcount range

11–50 employees

Short description

Jastram GmbH & Co. KG is a fourth-generation, family-owned Hamburg-based manufacturer of marine propulsion and control systems, producing low-noise transverse thrusters, rudder propellers, and variable frequency drives for luxury yachts, government vessels, inland, and commercial marine markets worldwide.

Ownership category

akta.pro rank

Product category

Marine Propulsion Systems

NAICS

Ship Building and Repairing (336611), Ship and Boat Building (33661)

SIC

Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Bow & Stern Thrusters (Tunnel/Retractable) (IMAJAHAG)

Keywords

• Marine propulsion systems
• Transverse thrusters
• Rudder propellers
• Marine drive controls
• Ship maneuvering technology

Headquarters

HQ city

Hamburg

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Marine Propulsion Equipment Sales: Jastram generates primary revenue from the sale of marine drive and control systems including transverse thrusters, rudder propellers, and integrated propulsion solutions. Products range from standard solutions to highly specialized individual systems for various vessel types.
2. Aftermarket Services and Spare Parts: Revenue from comprehensive service offerings including spare parts supply with lifelong availability, repair, maintenance, commissioning, and training services. The company guarantees 40+ year product lifespan support.
3. Engineering Support Services: Technical consulting and engineering support during design phases, including CFD/FEM optimization, noise and vibration measurements, and customized system design services.
4. Integrated Logistic Support (ILS): Documentation and logistics services for configuration, maintenance, servicing, and spare part procurement according to individual shipyard standards or international guidelines.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Jastram designs, manufactures, and services marine drive and control systems for ship maneuvering, including low-noise transverse thrusters with proprietary Active Noise Reduction, fixed-pitch transverse thrusters from 50 kW to 1,200 kW, 360-degree rudder propellers from 50 kW to 450 kW, and complete variable-frequency drive and control panels from 50 kW to 1.2 MW. The company delivers engineered propulsion solutions to shipyards and vessel operators across yachts, government, inland navigation, offshore, and commercial marine segments, backed by 40+ year product lifespans and global service support.

Product overview

Jastram is a fourth-generation manufacturer of marine drive and control systems specializing in low-noise maneuvering technology. The product portfolio centers on three core propulsion products: Low-Noise Thrusters (with proprietary Active Noise Reduction technology reducing noise by 15 dB), Transverse Thrusters (50 kW to 1,200 kW FPP systems with DNV type approval), and Rudder Propellers (360° controllable systems from 50 kW to 450 kW). These core products are complemented by Drive and Control Systems providing complete turnkey solutions from 50 kW to 1.2 MW. Two service add-ons support the product suite: Engineering Support (CFD/FEM-based design optimization and noise/vibration measurement) and Integrated Logistic Support (ILS) for documentation following ASD international standards. The company positions itself as the market leader in active noise reduction for marine vessels, serving yachts, governmental vessels, inland navigation, and offshore applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Low-Noise Thrusters

Quantifiable outcome

• Up to 15 dB(A) noise reduction through Active Noise Reduction system
• +3 more outcomes

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Promarin Propeller- und Marinetechnik GmbHcoreStrategic or Co-development Partner · 1 January 2017Collaborative research partner in the querEVA project (2017-2020), specializing in manufacturing propellers with innovative approaches for cavitation and vibration reduction. Jastram partnered with Promarin to develop full-scale measurement methods and numerical flow simulations for transverse thruster optimization.
• Technical University of Berlin - Dynamics of Maritime SystemscoreStrategic or Co-development Partner · 1 January 2017Research partner in the querEVA project (FKZ 03SX441) funded by BMWi. TU Berlin contributed expertise in maneuvering and numerical flow simulation, developing experimental setup for 1:1 scale transverse thruster measurements in deep-water channel.
• Kiel University of Applied Sciences (Fachhochschule Kiel)minorStrategic or Co-development PartnerCollaborated on research into optimal drive systems for watercraft in extended urban spaces, examining factors influencing shipping design and sustainable waterway utilization for public transport applications.
• LeiQaS Collaborative Research Project (Federal Government)coreStrategic or Co-development PartnerJastram's LeiQiT research project is part of the LeiQaS collaborative initiative funded by the Federal Government. The project optimizes noise reduction processes for transverse thrusters with a broad network of research partners examining structure-borne, airborne, and waterborne noise reduction approaches.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Brunvoll: Norwegian manufacturer of bow and stern transverse thrusters, azimuth thrusters, and rudder propellers for marine vessels. Closely comparable to Jastram in product scope (thrusters + propulsion drives), with similar focus on offshore, naval, and commercial marine customers.
• Thrustmaster of Texas: US manufacturer of marine bow and stern thrusters for offshore, governmental, and commercial vessels. Direct peer in transverse thruster product category with similar mid-size specialty profile.
• Nakashima Propeller: Japanese manufacturer of marine propellers and propulsion equipment. Comparable product category (marine propulsion hardware), primarily serving Japanese and broader APAC shipyards.
• Schottel: German manufacturer of steerable rudder propellers (Schottel RudderPropellers) and transverse thrusters. Direct competitor in rudder propellers and azimuth propulsion, with overlapping customer base in commercial, offshore, and government vessels.

Broad incumbents

• Wärtsilä: Finnish marine technology major offering integrated propulsion solutions including engines, propellers, and ship systems. Competes with Jastram indirectly through shipyard-level integrated tenders in the same vessel categories.
• Hyundai Heavy Industries: Major Korean shipbuilder producing in-house thrusters and propulsion packages. Competes as a vertically integrated alternative to Jastram on large commercial newbuilds in APAC.
• Rolls-Royce Power Systems (MTU): German-UK marine propulsion systems supplier offering engines, propulsion controls, and integrated solutions. Competes in adjacent marine propulsion categories where Jastram's drive systems are specified.
• ABB Marine & Ports: Swiss-Swedish industrial major providing electric propulsion, drives, and Azipod azimuth thrusters. Comparable to Jastram in the marine propulsion drive space and increasingly competes on integrated electric propulsion packages.
• Kongsberg Maritime: Norwegian marine technology supplier providing propulsion, thrusters, and integrated vessel systems. Competes in the same maritime customers as Jastram with significantly broader product portfolio.
• Voith: German-based large industrial group producing Voith Schneider propellers, Voith Inline Thrusters, and complete marine propulsion systems. Comparable product line to Jastram's transverse thrusters and rudder propellers, but operating at far greater scale across multiple industrial segments.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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 Jastram