During 2020 & 2021, Tillberg Design of Sweden (TDoS) performed extensive research and numerous executive interviews in the cruise and yacht industry. In summary, the research clearly verified the critical and imminent need to focus equally on Sustainability and Profitability when developing new vessels. 

True progress will require unified and optimized development processes. It needs to include financing and business models, through design, construction, delivery – and eventually upcycling, once the ship or yacht ends its service life. 

The Viken Group has been established to gather other leading and passionate companies, with similar ideas and business ethics, under one umbrella. This enables us to provide a full range of completely aligned and comprehensive design, naval architecture and project management services. All these proficiencies will be available to both our cruise line and yacht clients, as well as to our customers within hotel, resorts and private island developments.

The “Better Together” vision is materialized by complementing our first brand TDoS, with a number of new acquisitions and preferred partnerships. We are determined to be Better Together for our clients (including their guests and staff), for the environment and for our employees. 

Footnote: The Viken Group’s name refers to the small village of Viken in Sweden where TDoS once was founded by its pioneer Robert Tillberg.

Footnote: The Viken Group’s name refers to the small village of Viken in Sweden where TDoS once was founded by its pioneer Robert Tillberg.


Tillberg Design of Sweden (TDoS) has long been one of the major players in cruising design, since founder Robert Tillberg made the ocean and cruise liner and  Kungsholm a showcase of bespoke Scandinavian style in 1964. Today TDoS specializes in design concepts for cruise ships and yachts, while also providing graphic design and branding for a variety of clientele. Lightness and luminosity of spaces is a trademark of TDoS, all in all with a purposeful design that is firmly grounded in history, and with a future-proof timelessness. 

Based in Trieste, Italy, Thalia Marine is a full-service project management firm providing technical design expertise ranging from design consultancy, quantity surveys, on-site inspections and much more for the cruise ship and yacht building industries. Its team of experienced naval architects, interior designers and marine surveyors offer competencies across newbuilds and refits for yachts and cruise ships.



Columbia blue is one of the main driving forces for change in the leisure, lifestyle and asset management sectors. They set new standards in customized service delivery, state-of-the-art technology, sustainability and performance efficiency.


Established in 1964, Shanghai Merchant Ship Design and Research Institute (SDARI) stands out as one of China’s largest merchant ship design institutes, with the vastest variety of ship types, and world’s leading technical edge. SDARI today boasts a team of more than 600 employees with a full range of professions, providing services including Ship Design, Consultancy, Digital Operation Support, Marine Equipment and Ship Performance Testing.




Småbåthamnen 24
Höganäs Sweden

+46 42 23 80 90


Stefan R Nilsson

Partner & Group CEO

+46 76 722 30 90

Madelene Hall

CEO of TDoS,
Partner & Deputy CEO Viken Group

+46 76 118 70 16

Michal Jackiewicz

Executive Director TDoS, Partner & Board Member Viken Group

+46 70 609 84 98

Peter Tan

General Manager Asia

+86 139 1852 2142

Fredrik Johansson

Executive Director TDoS, Partner & Board Member Viken Group

+46 70 643 00 68

Maurizio Eliseo

Partner and CEO Thalia

+39 329 277 71 97