keep the cockpit and cargo areas dry and filled with air. The cluster of semi-rigid electromotive tentacles at the submersible's rear could propel it to a top speed of . It was unarmed but in an emergency the cockpit section could detach from the rest of the submersible as an escape pod. Clone turbo tank (HAVw A6 Juggernaut) The turbo tank is a ten-wheeled battle tank and armored personnel carrier that appears in Revenge of the Sith and is based on designs done by Joe Johnston for use in The Empire Strikes Back. West End Games based their "HAVw A5 Juggernaut" design on Johnson's sketches. The larger, more heavily armed vehicle that appears in Revenge of the Sith is labeled "HAVw A6". The clone turbo tank, more formally the HAVw A6 Juggernaut, is described in Star Wars sources as being built by Kuat Drive Yards to serve as a heavily armed and armored military transport for the Republic during the Clone Wars. Measuring long, wide and high, the massive tank can carry as many as 300 clone troopers into battle depending on internal configuration. Each of the Juggernaut's ten wheels consists of three independently spinning segments and utilize independent suspension to travel across nearly any terrain. Designed to absorb enemy fire, they help the tank achieve a maximum speed of . A crew of 12 operates the Juggernaut and can control it from cockpits located at either end of the tank. The Juggernaut's nearly impregnable armor plating is thermally superconductive to absorb and spread heat over a wider area. For weaponry it is equipped with a heavy laser cannon turret and rapid-repeating heavy laser cannon turret on the roof; two side-mounted medium antipersonnel laser cannons that extend out from either side of the hull; two twin antipersonnel blaster cannons under the 'forward' cockpit; and two retractable rocket/grenade launchers. After the end of the Clone Wars, the tank continues to serve the Galactic Empire. A later model, the HCVw A9, appears in Rogue One: A Star Wars Story being used as a prisoner transport carrying Jyn Erso (Felicity Jones). Corporate Alliance tank droid Corporate Alliance tank droids appear in Revenge of the Sith and have appeared in other Star Wars media, including as playable vehicles in Battlefront II. This "snail droid" was originally designed for Star Wars: Episode II – Attack of the Clones for the climactic Battle of Geonosis, but