According to the United States Coast Guard (USCG), there were 12,746,126 registered in the States and Territories. Millions safely use these vessels for recreational boating activities each year without incident. While the numbers aren't overwhelming, injuries from boat propeller strikes are very traumatic and greatly preventable.
Using USCG safety data for 2006, there were 8 fatalities and 98 injuries related to propeller strikes.
The Texas Experience - Centers for Disease Control (CDC) published findings of a study in Texas that addressed propeller related injuries in boaters. There were 600,000 boats registered in the State during the study year of 1997. Researchers monitored hospital admissions near four major lakes during the active boating season. During the study period, 13 people suffered prop injuries and 3 died.
Using this information, it is apparent that propeller related injuries are under reported at the national level. The most common cause of prop injuries found in the study were climbing into or out of the boat and participating in activities like water skiing or use of personal watercraft.
Recommendations for Reducing Propeller Related Injuries - Safety researchers and the Coast Guard have developed a number of recommendations on how to avoid prop strike injuries:
Propeller injuries are some of worst traumatic injuries that can be witnessed and cause terrible injuries. Propeller related injuries are also among the easiest to avoid accidents for boaters.
Changes in technology offer solutions to the problem as well. Advances have been made in jet drives, propeller guards, man overboard alarms, wireless tethers, and ignition interlocks. Nationally a group called Stop Propeller Injuries Now (SPIN) has been established to lobby for regulations that will lower the chance of further injuries.