
General and Technical Data
Model number: MSM-03
Code name: Gogg
Unit type: mass production amphibious mobile suit
Manufacturer: Zimmad Company
Operator(s): Principality of Zeon; civilians
First deployment: UC 0079
Accommodation: pilot only, in standard cockpit in torso (later refitted and replica units equipped with linear seat/panoramic monitor cockpit)
Dimensions: head height 18.3 meters
Weight: empty 82.4 metric tons; max gross 159.4 metric tons
Construction: super-high tensile steel on monocoque frame
Powerplant: Minovsky type ultracompact fusion reactor, output rated at 1740 kW
Propulsion: hydrojet thrusters: 2 x 38000 kg, 3 x 15000 kg
Performance: maximum thruster acceleration 0.76 G; maximum water speed 75 knots
Equipment and design features: sensors, range 5400 meters
Fixed armaments: 2 x mega particle gun, mounted in main body; 2 x torpedo launcher, mounted in main body
Technical and Historical Notes
When the Zeonic Company's amphibious MS-06M Zaku Marine Type proved a failure, the Zimmad Company stepped in to take a new approach to the challenge of underwater combat mobile suits. As the Principality of Zeon was desparate to keep their foothold on Earth during the One Year War, they needed an effective way to operate in Earth's oceans. The Zimmad Company's first - and successful - design was the MSM-03 Gogg. Heavily armored to withstand deep sea pressures, and with the sea to act as a natural heat sink, its bulky body housed a large and powerful reactor - large enough to power the Gogg's built-in beam weapons. Being a submersible unit, the Gogg's body also contained ballast tanks, whose water could be used to radiate reactor heat when it operated out of the water in amphibious assaults. With these features, the MSM-03 Gogg was the first "true" amphibious mobile suit and would set the stage for all underwater combat suits to come.

General and Technical Data
Model number: MSM-04
Code name: Acguy
Unit type: mass production amphibious mobile suit
Manufacturer: Zeonic Company
Operator(s): Principality of Zeon; civilians
First deployment: UC 0079
Accommodation: pilot only, in standard cockpit in torso
Dimensions: head height 19.2 meters
Weight: empty 91.6 metric tons; max gross 129.0 metric tons
Powerplant: Minovsky type ultracompact fusion reactor, output rated at 1870 kW
Propulsion: hydrojet thrusters: 109000 kg total
Performance: maximum thruster acceleration 0.85 G; maximum water speed 53 knots
Equipment and design features: Forearms interchangeable
Fixed armaments: 4 x 105mm vulcan gun, fire-linked, mounted in head; 6-tube rocket launcher, mounted on forearm; mega particle cannon, mounted inforearm; 1x machine gun, replaces mega particle cannon, mounted in forearm
Technical and Historical Notes
Following the Zimmad Company's first successful amphibious mobile suit, the MSM-03 Gogg, the Zeonic Company came back with its own original design. Using many internal parts from a standard MS-06F Zaku, the company produced the MSM-04 Acguy. Even with two Zaku powerplants, the heat signatures produced by the Acguy were relatively low compared to most other amphibious mobile suits from the One Year War. This lent the Acguy a stealthiness that made it perfect for covert operations. Zeon's Commander Char Aznable led a squadron of soldiers in Acguy mobile suits during a mission to destroy the mobile suit factory inside the Earth Federation's underground Jaburo base on 30 November UC 0079. Though the demolition mission was a failure, the Acguy did prove its usefulness by allowing Char's troops to succesfully infiltrate the base undetected. The Acguy's armament also proved something of a surprise to the Federation: in addition to head-mounted vulcan guns and rocket launchers in the left arm, what appeared to be more rocket launchers in the right arm were actually extendable claws. Topped off by a mega particle cannon, the right arm could also extend out, making it a useful punching or striking weapon. This is just standard loadout, as the forearms are interchangeable. Thus, there are some Acguys with rocket launcers in the right arm. Some have been seen to have machine guns instead of mega particle cannons, but that is most likely just an 'in-field' modification..

General and Technical Data
Model number: MSM-04G
Code name: Juagg
Unit type: prototype amphibious mobile suit
Manufacturer: Zeonic Company
Operator: Principality of Zeon
First deployment: UC 0079
Accommodation: pilot only, in standard cockpit in torso
Dimensions: head height 17.4 meters
Weight: empty 137.3 metric tons; max gross 198.7 metric tons
Powerplant: Minovsky type ultracompact fusion reactor, output rated at 2660 kW
Propulsion: hydrojet thrusters: 97900 kg total
Performance: maximum thruster acceleration 0.49 G; maximum water speed 55 knots
Fixed armaments: 2 x 3-tube 320mm rocket launcher, mounted on arms
Technical and Historical Notes
In preparation for its planned assault on the Earth Federation Forces' underground South American Jaburo military headquarters during the One Year War, the Zeon military forces stationed at California Base developed a series of specialized mobile suits to aid in the assault. One of these was the MSM-04G Juagg, an amphibious unit designed to provide medium-range fire support for other mobile suits engaged in close combat. Loosely based on the MSM-04 Acguy design, the Juagg mounted a pair of 3-barrel 320mm rocket launchers for "hands," although these could be changed out for normal humanoid-type hands in needed. However, the Juaggs built at California Base were never deployed, as Zeon's Commander Char Aznable discovered the secret spacedock entrance to Jaburo long before the scheduled assault, and launched a hasty attack with what limited resources he could receive from California Base in time.

Performance: maximum thruster acceleration 0.86 G; maximum water speed 103 knots
Equipment and design features: sensors, range 5200 meters
Fixed armaments: 6 x 240mm missile launcher, 5 round magazine per launcher, mounted in head; 2 x mega particle cannon, mounted in forearms
Technical and Historical Notes
Following in the wave of amphibious mobile suits being developed for the Principality of Zeon's Earthside war front during the One Year War, MIP Company's first production model mobile suit was the highly successful MSM-07 Z'Gok. Being both fast in the water and agile on land, the Z'Gok had learned from Zimmad Company's MSM-03 Gogg and Zeonic Company's MSM-04 Acguy, replacing the bulky ballast water tanks normally used for cooling the suit's reactor out of water with an air-cooled fan system. The Z'Gok also had mega particle cannons mounted in the claw-hands for easier aiming, and large-capacity magazines for its missile launchers. All of these factors made the Z'Gok perhaps the most successful line of amphibious mobile suits used by the Principality of Zeon.

General and Technical Data
Model number: MSM-07E
Code name: Z'Gok-E
Unit type: mass production amphibious mobile suit
Manufacturer: MIP Company
Operator: Principality of Zeon
First deployment: UC 0079
Accommodation: pilot only, in standard cockpit in torso
Dimensions: head height 18.4 meters
Weight: empty 69.5 metric tons; max gross 88.9 metric tons
Construction: titanium/ceramic composite on monocoque frame
Powerplant: Minovsky type ultracompact fusion reactor, output rated at 2570 kW
Propulsion: rocket/hydrojet thrusters: 4 x 20000 kg, 2 x 16000 kg; optional hydrojet booster packs: 2; vernier thrusters/apogee motors: 9
Performance: maximum thruster acceleration 1.26 G; maximum water speed 118 knots
Fixed armaments: 2 x beam cannon, mounted in hands; 6 x torpedo launcher, mounted in head
Technical and Historical Notes
Following their invasion and occupation of many areas of Earth during the One Year War, the Principality of Zeon military began developing amphibious mobile suits to increase its war capabilities in Earth's oceans and waterways. One of the most successful designs was the MSM-07 Z'Gok, though MIP Company continued to improve this model. This upgraded model was called the MSM-07E Z'Gok-E ("E" for "experiment"), and while similar to its predecessor, it featured many improvements, the most visible being the ability to draw its arms and legs up closer into its body, making the Z'Gok-E more streamlined and faster while moving underwater. Propellant storage for its thrusters were moved from its main body into tanks mounted inside the arms, with energy caps installed in the hand-mounted beam guns, making them able to store up power from the generator and discharge a rapid-fire, machine gun-like burst when required. With this increase in handy firepower for both underwater and land combat, the original missile tubes mounted in the head - which could only be fired out of the water - were replaced with torpedo tubes, giving it additional firepower while operating underwater. Only a limited number of these experimental units were built, with one unit operated by Zeon's Cyclops Team special forces unit in a raid on the Earth Federation Forces' Arctic base in December UC 0079.