The HSMB designates three categories of commemoration: nationally significant Sites, Events, and Persons. While the HSMB had recommended Dochet Island National Historic Site in 1958, it was unclear whether the HSMB's later recommendation, in 1968, was to name it a Site or an Event. This was clarified in 2008. Relying on a 1960 HSMB decision that naming national historic sites outside Canada should be avoided, and in light of policy that Events and Persons outside the country may be designated, it decided that Dochet Island had been designated a national historic event in 1968.