There are a number of situations which can result in peril for boats and persons on board. Among these is boating too close to dam spillways, where turbulence and strong currents can result in loss of control of the vessel. These areas as well as other hazardous areas are usually marked. DO NOT ignore such markers.
Additionally, there may be potentially hazardous situations that can adversely affect boating. These include weather conditions, operating in shallow water where underwater navigational gear may be damaged, or boating in bodies of water that include weeds and other growth that can foul the boat operations. These flora can foul your boat engine, restrict water intake to the engine (causing overheating), and restrict the propellers to such an extent that it causes a vibration that can damage the engine and drive train.