When I get a chance I'll see if the statistics given are statewide or Lake referenced. Most of the rest of the article is clearly referenced to the Lake.
But let's assume for arguments sake that the stats were only for Winnipesaukee. Given the annual boating traffic that occurs there the number of accidents per boat/boaters remain statistically insignificant.
If the numbers are for Statewide incidents then the numbers are even more interesting. Given that hundreds of thousands of boaters visit the entire State (and don't forget our coastal waters which also fall under NHMP coverage along with the USCG) these numbers would reflect that horror stories aside boating in New Hampshire remains an extremely safe form of activity!
Anyway I'll put a call in and see if I can get an answer....