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© 2001-2019 Sealegs International Ltd. The Sealegs logo, Sealegs wordmark and Hydrasol wordmark are registered Trademarks of Sealegs. The Sealegs amphibious craft is a registered design. The Sealegs amphibious system is patented. All drawings, photographs, text and 3D renders are copyright of Sealegs. All rights reserved. Sealegs protects its trademarks, patents, copyright, designs and IP rights vigorously.

Sealegs International Limited is part of the Future Mobility Solutions Group.
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The donor hull is the name given to a potential design being fitted with a Sealegs Amphibious Enablement System (AES). There are some specifications that need to be met, but we help you through all of those. 

Sealegs steps you through the whole process and provides you with the all documentation, training and support you may need. It all starts with:

Technical specifications and drawings

The technical specifications give us an idea of how the AES will integrate with your boat, and how much modification will be required.

The drawings let us help you with design, ensuring the kit is fitted at the right height and that any strengthening that is required is designed to suit.

Weight calculation

The size and weight of the donor hull will determine the appropriate AES. System selection is decided in part by adding the gross vehicle weight and calculated payload together.  

The gross vehicle weight is calculated by summing the collective weights of the selected Sealegs AES, base dry weight of a donor hull, inboard or outboard, full complement of fuel and the heaviest combination of any additional options.

We know the process of Sealegs integration may seem daunting, which is why Sealegs offer full and comprehensive technical support before, during and after your project is successfully completed.



Sealegs has developed AES for a wide range of craft sizes and weights. Check the table below for specifications of our Enablement Systems.

System 70 is available with a minimum order quantity of five for the integration craft at the design stage. Please get in touch with the details of your design and application

Once the size of Amphibious Enablement System has been determined, the next task to decide on the best choice of inboard powerpack integration to choose: the Hydrapak or the Hydrasol.


Learn more below >>




With technical specifications, drawings and weight analysis, Sealegs can begin to assist with technical feasibility analysis, design and prototyping. A successful integration between Sealegs and your boat is the ultimate goal, so we encourage our partners to make use of our expertise, technology and patents. 




For boat owners

  • Get the amphibious boat you want from the boat builder of your choice

  • Customise your boat and enjoy all the benefits of being amphibious

  • Make the most of your investment and enjoy more time on the water in your ideal craft




For boat builders

  • Open new markets

  • Increase revenues and products

  • Improve existing products

  • Differentiate your brand

Boat builders who have transformed their boats with Sealegs AES

Contact us now to learn how you can benefit from Sealegs amphibious technology




THE HYDRAPAK can be delivered as an on-deck pack which can be  mounted near the transom of the boat. The powerpack height works well as a seat for pilot or passengers and allows for any console size or placement.


THE HYDRASOL can be delivered within an all-aluminium console, making installation easier and reducing the modification required on the donor hull. This option utilizes patent pending through-hull wet exhaust technology for improved power output.



If neither the hydrasol or hydrapak solution is suitable for your design, work with Sealegs to design your own bespoke integration solution.