Sleipner As
Sleipner AS is a Norwegian marine equipment manufacturer that designs and produces thrusters, stabilizers, hydraulic steering systems, and anchor windlasses for leisure boats and commercial vessels, distributed globally through dealers and direct e-commerce.
- Company typePrivate
- Founded1908
- HeadquartersFredrikstad, Norway
- Headcount101–250
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What Sleipner As does
Sleipner AS is a Norwegian marine technology company headquartered in Fredrikstad, Norway, that designs, manufactures, and distributes marine thrusters, stabilizers, hydraulic steering systems, and anchor windlasses for both leisure boats and commercial vessels. The company operates a vertically integrated business spanning product design, engineering, and manufacturing, with a portfolio built around four core product lines (Thruster Systems, Stabilizers, Steering Systems, and Anchor Windlasses) supported by a proprietary S-Link™ CAN-based control system that enables cross-product communication onboard a single vessel. Its technology stack includes the patented Vector Fins™ stabilizer design (concave hydrodynamic shape delivering up to 95% roll reduction while cruising and 50% efficiency gains at anchor), Q-Prop™ propeller upgrades, Variable Speed Control, and Intelligent Power Control, with a miniaturization advantage of up to 75% more compact actuators than competitors.
The company monetizes through hardware sales via two channels: a global authorized dealer network providing sales, installation, and service, and a direct-to-consumer e-commerce platform with a thruster system builder tool. Pricing is dealer-mediated and not publicly disclosed. Customer segments are split between leisure boat owners (recreational boating, yacht ownership, pleasure cruising) and professional/commercial vessel operators (work boats, commercial maritime), with no named-end-user customer logos disclosed. The company was formerly known as Side-Power and rebranded to Sleipner Group around 2023 while maintaining product continuity. It maintains localized websites across seven European countries (Norway, Sweden, Denmark, UK, Germany, Finland, Italy) and operates with 101-250 employees. The company is privately held with no disclosed parent company, institutional investors, or funding rounds.
Sleipner As firmographics
Firmographics- Name
- Sleipner As
- Legal name
- Sleipner As
- Website
- https://www.sleipnergroup.com
- Company type
- Private
- Founded year
- 1908
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Sleipner AS is a Norwegian marine equipment manufacturer that designs and produces thrusters, stabilizers, hydraulic steering systems, and anchor windlasses for leisure boats and commercial vessels, distributed globally through dealers and direct e-commerce.
- Ownership category
- akta.pro rank
Sleipner As industry classification
Industry- Product category
- Marine Equipment Manufacturing
- NAICS
- Ship Building and Repairing (336611), Ship and Boat Building (33661), Ship and Boat Building (3366), Fluid Power Pump and Motor Manufacturing (333996)
- SIC
- Ship & Boat Building & Repairing (3730), Engines & Turbines (3510), Pumps & Pumping Equipment (3561)
- akta.pro primary industry
- Bow & Stern Thrusters (Tunnel/Retractable) (IMAJAHAG)
- akta.pro secondary industries
- Propulsion Cooling, Lubrication & Auxiliaries (Pumps, heat exchangers, filters) (IMAJAHAL), Propellers & Waterjets (IMAJAHAE), Marine Generators, Alternators & Power Electronics (Gen-sets, VFDs, converters) (IMAJAHAI), Propulsion MRO, Spares & Field Service (Overhauls, retrofits, upgrades) (IMAJAHAN)
Keywords
Where Sleipner As is headquartered
LocationHeadquarters
- HQ city
- Fredrikstad
- HQ country
- Norway
- HQ region
- Europe
Offices1 record
Markets served
Sleipner As business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales
Revenue model
- Marine Equipment Sales: Sale of thrusters, stabilizers, steering systems, and anchor windlasses for leisure and commercial boats. Products sold through dealers and direct-to-consumer e-commerce.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Dealer-mediated pricing |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels8 records
Sleipner As product offering
Product offeringCore offering
Sleipner As designs, develops, and manufactures marine propulsion and stabilization equipment, including bow and stern thrusters, Vector Fins™ stabilizer systems, hydraulic steering systems, and anchor windlasses. The company supplies these products to leisure boat owners and commercial vessel operators through a global dealer network and direct e-commerce channels.
Product overview
Sleipner Group (formerly Side-Power) is a Norwegian marine technology company that creates world-leading technical solutions for boats, consistently improving safety and comfort at sea. The company offers a comprehensive product portfolio comprising four core product lines: Thruster Systems (including bow and stern thrusters with tunnel, external, and retractable options, plus control units and upgrades like Q-Prop™ and Intelligent Power Control), Stabilizers featuring the patented Vector Fins™ technology (available in both electric and hydraulic variants with various sizes from 0.65m² to 1.95m² for vessels from 52ft to 141ft), Steering Systems (hydraulic steering including power steering, helm pumps, and cylinders), and Anchor Windlasses (with controlled free-fall systems). The products are designed for both leisure boats and commercial/professional vessels, with supporting technologies like S-LINK™ for inter-product communication. The company is transitioning from the legacy Side-Power brand to Sleipner while maintaining product continuity.
Differentiator
Problem solved
Functional benefit
Brands
- Side-Power: Former brand name; the company has rebranded from Side-Power to Sleipner while maintaining the same products.
Products and services
- Thruster Systems
- Stabilizers (Vector Fins™)
- Steering Systems
- Anchor Windlasses
Quantifiable outcome
- Up to 50% more efficient at anchor compared to flat fins
- +4 more outcomes
Companies that use Sleipner As
Customer profileSegments2 records
Ideal customer profiles2 records
Sleipner As technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
Sleipner As partnerships and signals
Strategic signalScale indicators1 record
Recent moves6 records
Expansion highlights5 records
Sleipner As competitors and assessment
Company assessmentDirect peers
- Naiad Dynamics: Naiad Dynamics is a US-based specialist in marine stabilization systems, including fin and gyro stabilizers. It is a direct competitor to Sleipner's Vector Fins™ stabilizer product line, particularly in the larger yacht and commercial segments.
- Quick Group: Quick Group is an Italian marine equipment manufacturer offering bow thrusters, windlasses, and onboard systems. It directly competes with Sleipner in thrusters and anchor windlasses for the leisure and small commercial segments.
- Maxwell Marine: Maxwell Marine is a New Zealand-based manufacturer of anchor windlasses, capstans, and related deck equipment. It directly competes with Sleipner's windlass product line for leisure and commercial vessels.
- Humphree: Humphree is a Swedish manufacturer of interceptors, stabilizers, and dynamic motion-control systems for boats. It directly competes with Sleipner's Vector Fins™ stabilizer line in the leisure and commercial vessel market.
- CMC Marine: CMC Marine is an Italian maker of marine stabilization systems (Stabilis Electra) and bow/stern thrusters. It is a direct competitor to Sleipner in stabilizers and adjacent thruster products for yachts and light commercial vessels.
- Vetus: Vetus is a Dutch marine equipment manufacturer producing bow thrusters, steering systems, and engine solutions for recreational and small commercial vessels. It directly competes with Sleipner in thrusters and steering for the leisure boat market.
- Lewmar: Lewmar is a UK-headquartered marine equipment manufacturer producing windlasses, thrusters, winches, and steering systems for leisure and commercial boats. It directly competes with Sleipner across thrusters, windlasses, and steering.
Broad incumbents
- ZF Friedrichshafen (ZF Marine): ZF is a global Tier-1 supplier of marine propulsion, driveline, and control systems including thrusters and steering. It is comparable to Sleipner in the thruster and steering categories but operates at much larger scale and across many marine segments beyond leisure.
- Twin Disc: Twin Disc is a US manufacturer of marine transmissions, propulsion, and power-take-off systems. It is a broader incumbent in marine propulsion and driveline, with overlapping mechanized-component capabilities comparable to Sleipner's gearboxes and thruster drives.
Emerging players
- ABT-TRAC: ABT-TRAC develops active trim and stabilization systems for boats. It overlaps with Sleipner's stabilization and motion-control offerings, particularly in the smaller-to-mid-size leisure boat segment.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Sleipner As social profiles
Digital presenceSleipner As financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sleipner As leadership team
Management profileNumber of profiles
Sleipner As funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sleipner As M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sleipner As
What does Sleipner As do?
Sleipner As designs, develops, and manufactures marine propulsion and stabilization equipment, including bow and stern thrusters, Vector Fins™ stabilizer systems, hydraulic steering systems, and anchor windlasses. The company supplies these products to leisure boat owners and commercial vessel operators through a global dealer network and direct e-commerce channels.
Is Sleipner As a public or private company?
Sleipner As is a private company. It is classified as unknown and is currently operating.
When was Sleipner As founded?
Sleipner As was founded in 1908. It employs 101 to 250 people.
Where is Sleipner As based?
Sleipner As is headquartered in Fredrikstad, Norway, in the Europe region.
How does Sleipner As make money?
One revenue line is on record: marine Equipment Sales.
Who are Sleipner As's main competitors?
Direct peers on record are Naiad Dynamics, Quick Group, Maxwell Marine, Humphree, CMC Marine, Vetus and Lewmar. Broad incumbents are ZF Friedrichshafen (ZF Marine) and Twin Disc. ABT-TRAC is listed as an emerging player.
Does Sleipner As have an API?
No public API is recorded for Sleipner As.
What industry is Sleipner As in?
Sleipner As's product category is Marine Equipment Manufacturing. Its primary akta.pro industry code is IMAJAHAG, Bow & Stern Thrusters (Tunnel/Retractable), with a secondary code of IMAJAHAL, Propulsion Cooling, Lubrication & Auxiliaries (Pumps, heat exchangers, filters). Its NAICS code is 336611 and its SIC code is 3730.