forward curve is based on the curve of a shovel, and parts of it are intended to suggest animalistic traits. LEGO released an AAT model in 2001. In-universe reference material describes the AAT as a battle tank designed specifically for head-on combat, with a very heavily armored front and a nose of almost solid armor so it can crash through heavy walls. First manufactured for the Trade Federation by the Baktoid Armor Workshop, the AAT floats above the ground thanks to anti-gravity "repulsorlift" technology and can achieve a top speed of . At long, the AAT is crewed by four battle droids: a commander, a pilot and two gunners. Up to six additional battle droids can use handholds on either side of the tank's body to ride into battle. It is heavily armed with a primary turret-mounted heavy laser cannon; matching pairs of anti-personnel laser cannons and laser rangefinders which extend out either side on stalks; and two forward-facing short-ranged blaster cannons in the tank's main body. The base of the tank also incorporates six energized projectile launchers which carry three main ammunition types: "bunker-buster" high explosive shells, armor-piercing shells and high-energy shells. When fired, these shells are cocooned in high-energy plasma which reduces air friction and improves penetration. In order to reload the launchers though, the entire "foot" of the AAT must be removed and a loaded replacement installed using mechanical facilities. Bongo Submarine The Gungan "bongo" submarine is a transport in The Phantom Menace. Obi-Wan Kenobi (Ewan McGregor), Qui-Gon Jinn (Liam Neeson), and Jar Jar Binks (Ahmed Best) use a bongo to travel from the underwater city of Otah Gunga to the Naboo capital of Theed. Industrial Light & Magic's Doug Chiang devised the submarine's squid-like propeller design. This assembly was then merged with the design for a manta-shaped underwater transport written out of an earlier draft of the story. This design replaced earlier concepts that depicted the Gungan vessel as an organic-looking diving bell. Practical and CGI models of the Gungan vessel were built, as well as a full-size set for the actors to work in. Within the Star Wars universe, the Bongo is described as being organically grown by secret Gungan techniques and so no two are exactly alike. The submersible piloted by Jar-Jar, Obi-Wan and Qua-Gon was a Tribubble bongo long and manufactured by the Otoh Gunga Bongmeken Cooperative. It used hydrostatic bubble shields to