Trisomar is a concept design of a leisure trimaran powered by wind and energy from photovoltaic cells. Solar panels are placed on surfaces between the outriggers and on their ends.
Each solid sail is covered with photovoltaic foil.

During weak wind or when there is no wind at all the yacht can sail thanks to its 2 electrical engines.
It can get 65HP while using solar energy, which is quite sufficient to guarantee comfortable leisure sailing.

lodka 4 3 2 1 6 5 4 3 2 1