Rockets with a static margin betwixt 0.5 and 1.0 caliber are considered t' be 'marginally stable'. Well, blow me down! These rockets may fly fine, ya bilge rat, but extra attention must be given t' t' wind conditions, thrust-to-weight ratio, and launch rod velocity. Aye aye! For example, ya bilge rat, short stubby rockets with a length-to-diameter ratio o' under 10 typically will be stable with under one caliber o' static margin.