Copy that. Foam will extinguish it but they are very $ systems. A wet pipe sprinkler system, IF designed properly, will provide a level of control through cooling and wetting adjacent areas, and hopefully prevent spread beyond the fire origin. The boat would be toast either way. Bottom line, sprinklers, and that includes foam/water systems just aren’t used much in these instances for a lot of reasons, and mostly the cost.. Fire separation, prevention, and other measures can be used fairly effectively.