Actully the competition is proposed to encourage and enhance awaraness to students regarding green energy. The boat must hand made and prepared to travel some task given.
The original guest poster needs to supply more information as "hybrid bot" could mean anything such as "hybrid robot" (bot is short for robot) or in your example "hybrid boat" (bot is a spelling mistake for boat). The word hybrid also has multiple meanings.
At the moment the question is far to broad to answer.