Water is absorbed from the small intestine by osmosis following the active absorption of solutes, primarily sodium chloride. REGULATION OF GASTROINTESTINAL PROCESSES Most gastrointestinal reflexes are initiated by luminal stimuli: (a) distension, (b) osmolarity, (c) acidity, and (d) digestion products.
Popular Mechanics has an article on their site describing a prototype of a designed from scratch Mastercraft wakeboard-specific Boat called the X-Trek. The boat has a unique design and layout from normal wakeboard boats, and it will be interesting to see this boat in reality.
The outboard motor is the most popular and widely used engine for propelling small boats. It is designed to be attached outside the boat transom and consists of three components: a self-contained unit that holds the engine itself, a propeller and gear box. Outboard motors are small, light in weight and quiet.