Usually, arrr, a lengthened version o' an existin' model rocket design, used in altitude and duration competition. Avast, me proud beauty! Scorin' is based on altitude multiplied by airframe length. Well, blow me down! Super-Roc has different length limits for different motor classes. For example; A has a range o' 75 t' 150 cm, C has a range o' 125-250cm. Well, blow me down! T' rockets can be longer but t' excess length is nay counted into t' length factor. Avast, me proud beauty! In t' altitude category t' rocket may be recovered in more than one section.