To who ever might be reading this, I am looking for an estimant on a submaine that is compatable with ICS (Iron Clad System) And my SEC Micro Fox avatar, I am just looking for an estimant on one that has basic periscope and torpedo functions, along with a compase rose, speed indicater, and four degrees of turn, dive and rise. Free is GREAT! But I am not afraid to pay when I have the money around.