| Primary cause of accident | Accidents | Fatalities |
|---|---|---|
| Loading of passengers or gear | 514 | 91 |
| Hull failure | 77 | 10 |
| Machinery / machinery system failure | 272 | 18 |
| Equipment / equipment system failure | 141 | 9 |
| Operation of vessel | 2,867 | 336 |
| Environment | 621 | 108 |
| Ignition of spilled fuel or vapor | 36 | 0 |
| Other | 166 | 42 |
| Unknown | 273 | 96 |
| Total | 4,967 | 710 |
SOURCE: U.S. Department of Homeland Security, U.S. Coast Guard, Boating Statistics, 2006; available at: http://www.uscgboating.org as of Mar. 24, 2008.