We’ve written here in the past about the ArrowCat family of power catamarans, described as the next generation of powercats due to their targeting of the family boating niche. Here’s a YouTube video showing one of these midsized New Zealand powercats in action. The video also includes a tour of the interior of the ArrowCat.

The SeaBob is a combination of a personal jet-ski and bodyboard. This simple device designed in Stuttgart, Germany is powered by a rechargeable electric motor and uses an impeller propulsion system to travel at speeds up to 15km/h. The SeaBob can be used to bodysurf through the waves or to explore the underwater world. It was created with safety in mind — the motor stops almost immediately if you let go of the controls. An LCD display shows engine power, battery life, water temperature and also includes a depth gauge. See it in action in this YouTube video: