Welcome to the catamaran design website of Derek Kelsall.

With over 40 years of specialising in Catamarans and composites, and developing the KSS (Kelsall Swiftbuild Sandwich) custom build process for professional and home boat builders, Kelsall Catamarans is the world leader in this field.
Build with KSS and achieve an

Efficient
Practical
Logical
Stylish
No compromise

BUILD SOLUTION

Design Plans

Arrangements

Resin Infusion

Frames for
Half Hull

Shaping and
Lamination

Modular
Assembly

Part One of Derek Kelsall's Story in Latest Issue of Australian Multihull World Magazine

Kelsall Catamarans & KSS Newsletter

More Pictures of Interest

Resin Infusion of KSS 58 Saloon Top by Ballotta, Peru


Click here to view more pictures of the KSS 58 by Ballotta, Peru.

Click here to view pictures of the latest KSS46 Catamarans built by Ballotta, Peru.

Customised KSS 46. The Gillaroo, launched in Northern Ireland.




Two Golden Oldies (30+). VSD (won Transat En Double) and Catmarine

See the Kiss Kat range.
For a trailer sail catamaran that is simpler, better and more convenient.
www.kelsall.com/kisskat

See our representative's web site in Brazil.
We invite South American clients to contact direct www.kelsall.com.br