Dolprop Industries AB

Mission

A more sustainable planet

Inspired by the wonder of evolution we take a biomimetic approach in developing the world’s most sustainable marine propulsion technology.

The long term goal is to make our technology operational for large commercial vessels as an eco-friendly alternative to traditional technologies.

On the journey towards changing the prerequisites for global shipping, the technology will be made available for a selected range of maritime applications.

0 %

of the earth’s water is held by the oceans

0 %

of all cargo is shipped on these oceans

0 tons

CO2 is annually emitted from shipping

Why Dolprop?

World's Most Sustainable Marine Propulsion Technology

Learn
more →

Efficiency

Silence

Safety

Our unique designs offer unparalleled:

A game-changer for the maritime industry.

Dolprop - Efficient Marine Propulsion Technology

A large container vessel can carry more than 6000 tons of fuel and consumes typically 200 tons per day while cruising.

Efficiency

Inspired by the wonder of evolution, we develop the most efficient propulsors ever seen.

The biggest impact is significantly decreased fuel consumption, consequently reduced emissions and lowered costs.

Research also shows promising results for maintenance and durability.

- Dolphin flukes easily exceed a hydrodynamic efficiency of 85% - 90% where propellers only reach 40% - 70%.

- A dolphin weighing 300 kg reaches a speed of 30+ knots and jumps several meters powered by remarkably few horsepower.

Silence

Dolprop's bio-inspired flukes are able to operate at exceptionally low rpm, with no cavitation.

Since 1950, human activities have rapidly expanded across the oceans. This, unfortunately, led to an increase of the underwater, low-frequency noise at a rate of 3.3 dB per decade.

Marine mammals and fish use hearing as their primary sense and are highly dependent upon sound for navigation, communication, finding food, reproduction and hazard detection.

One can imagine this means silent…

Dolprop - Safe Marine Propulsion Technology

Safety

Fluke technology eliminates injuries to animals and humans, and is resistent in case of unintended contact with foreign objects.

While propeller blades are rigid and sharp, the dolphin flukes are flexible with soft edges.

We see a strong commitment from people deeply affected by damage on marine life caused by propellers.

Search And Rescue (SAR) professionals show great interest in the technology. Injuring people in the water is a considerable risk during SAR-operations.

Scroll down to learn more about our technology

One could say that nature developed its own propulsion technology with safety in mind.

Injuring people is a considerable risk during SAR-operations.

Technology

Biomimetic approach

One of Dolprop´s highly efficient and versatile propulsion packages. The convertor transforms rotational motion into reciprocating (flapping) motion.

Our flukes generate thrust by performing a sine-wave motion, known as thunniform swimming.

Several components need to be addressed in order to achieve optimised movement of the fluke.

This is a primary mode of locomotion for numerous fast swimmers such as dolphins, whales, and some of the fastest fish species e.g tunas and barracudas.

DolPOD - Sustainable and affordable marine propulsion

Therefore, we have developed unique solutions to ensure a coupled motion resulting in an highly beneficial movement pattern.

Learn more

Dolprop - Sinus waves in fluke technology

The propulsor utilises a motion control which allows control of the angle of attack, following from interaction with the ambient water.

The fluke moves with optimised angle of attack in a smooth sine-wave motion.

Hence, the fluke experiences minimal flow separation, enabling efficient propulsion for a wide range of operating rpm.

Smart system

Optimal Geometry

We actually take nature a little bit beyond itself. This however, we don´t tell the dolphins…

Our flukes are based on a combination of spanwise geometry and hydrofoil shapes, which are found to best resemble nature.

In addition, they demonstrate lifelike flexibility under motion, which reduces the impact of secondary vortices in a similar fashion to modern airplane wingtips.

We develop our own unique and optimised wing profiles.

Scroll down to learn more about our facilities

The operations utilise the fact that Dolprop upholds a family of patents.

Being an IP and R&D company, the patents are considered as one of our core assets. We emphasis a continuous development of the patents, both technically and geographically.

Dolprop upholds its patents in a wide range of countries.

Patents

Facilities

Our R&D facilities are situated in Spånga, just 7 minutes with public transport from the central station of Stockholm.

There you find our test tank, prototype workshop, and the scenic coast where we run our sea trials.

Our test facilities allow us to work with both scale models and real size vehicles.

We carry out everything from idea to qualified prototyping and scale modelling.

Hands-on expertise

Studying the fluke's movements in the test tank.

Partners

Social Media

Career

WhatsApp Image 2022-02-28 at 19.42.37 (1)

Working with us at Dolprop

We are looking for talents ready to tackle challenging projects that will ultimately enable a new standard for marine propulsion. Are you one of them?

There are also openings available for master-class students with an interest in the field. We can offer tasks within a wide variety of projects.

Get in contact

WhatsApp Image 2022-02-28 at 19.42.37 (2)

Mission

A more sustainable planet

Inspired by the wonder of evolution we take a biomimetic approach in developing the world’s most sustainable marine propulsion technology.

The long term goal is to make our technology operational for large commercial vessels as an eco-friendly alternative to traditional technologies.

On the journey towards changing the prerequisites for global shipping, the technology will be made available for a selected range of maritime applications.

0 %

of the earth’s water is held by the oceans

0 %

of all cargo is shipped on these oceans

0 tons

of CO2 is annually emitted from shipping

Why Dolprop?

Efficiency

Silence

Safety

Our unique designs offer unparalleled:

A game-changer for the maritime industry.

Learn more

A large container vessel can carry more than 6000 tons of fuel and consumes typically 200 tons per day while cruising.

Efficiency

Inspired by the wonder of evolution, we develop the most efficient propulsors ever seen.

The biggest impact is significantly decreased fuel consumption, consequently reduced emissions and lowered costs.

Research also shows promising results for maintenance and durability.

Silence

Dolprop's bio-inspired flukes are able to operate at exceptionally low rpm, with no cavitation.

Since 1950, human activities have rapidly expanded across the oceans. This, unfortunately, led to an increase of the underwater, low-frequency noise at a rate of 3.3 dB per decade.

Marine mammals and fish use hearing as their primary sense and are highly dependent upon sound for navigation, communication, finding food, reproduction and hazard detection.

One can imagine this means silent…

Safety

Fluke technology eliminates injuries to animals and humans, and is resistent in case of unintended contact with foreign objects.

While propeller blades are rigid and sharp, the dolphin flukes are flexible with soft edges.

Injuring people is a considerable risk during SAR-operations.

Scroll down to learn more about our technology

One could say that nature developed its own propulsion technology with safety in mind.

Technology

Our flukes generate thrust by performing a sine-wave motion, known as thunniform swimming.

This is a primary mode of locomotion for numerous fast swimmers such as dolphins, whales, and some of the fastest fish species e.g tunas and barracudas.

Several components need to be addressed in order to achieve optimised movement of the fluke.

One of Dolprop´s highly efficient and versatile propulsion packages. The convertor transforms rotational motion into reciprocating (flapping) motion.

Biomimicry approach

Therefore, we have developed unique solutions to ensure a coupled motion resulting in an highly beneficial movement pattern.

The propulsor utilises a motion control which allows control of the angle of attack, following from interaction with the ambient water.

The fluke moves with optimised angle of attack in a smooth sine-wave motion.

Smart system

Hence, the fluke experiences minimal flow separation, enabling efficient propulsion for a wide range of operating rpm.

We actually take nature a little bit beyond itself. This however, we don´t tell the dolphins…

We develop our own unique and optimised wing profiles.

Optimal geometry

Dolprop upholds its patents in a wide range of countries.

Patents

Scroll down to learn more about our facilities

Facilities

Studying the fluke's movements in the test tank.

Together with Fraunhofer-Chalmers Centre we have developed a ”digital twin” and are able to execute some of the most advanced analyses available in the field.

Swipe to learn more

Our R&D facilities are situated in Spånga, just 7 minutes with public transport from the central station of Stockholm. There you find our test tank, prototype workshop, and the scenic coast where we run our sea trials.

Our test facilities allow us to work with both scale models and real size vehicles.

We carry out everything from idea to qualified prototyping and scale modelling.

Hands-on expertise

Partners

Social Media

Career

Working with us at Dolprop

We are looking for talents ready to tackle challenging projects that will ultimately enable a new standard for marine propulsion. Are you one of them?

There are also openings available for master-class students. We can offer tasks within a wide variety of projects.

Get in contact