Mich. Comp. Laws § 570.410
Any person having any interest in, or claim against the water-craft seized may intervene to protect such interest or collect such claim by filing a complaint as hereinbefore provided, entitled an intervening complaint and the complainant or any other person interested may defend any complaint by filing an answer as hereinafter provided, and giving security to the satisfaction of the court to pay any costs arising from such defense; and upon filing any such intervening complaint a summons as hereinbefore provided shall issue; and if the same shall be returned not served, notice by publication shall be given as aforesaid; and several intervening complaints may be united with each other or the original in 1 notice, providing that due filing of 1 intervening complaint shall be deemed the commencement of a separate suit, except that but 1 entry fee need be paid.
MCL 570.410