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The RGM-79U GM Sloep is the first amphibious mass-produced mobile suit developed by the Earth Federation Army. It first appeared as a part of the MSV-R line.

Technology & Combat Characteristics

The advent of the Principality of Zeon's amphibious mobile suit was a far greater than the Federation Army could have anticipated. Because the Federation did not have an effective countermeasure against this, they decided to develop optional equipment that would take advantage of the versatility of the RGM-79 GM. It was equipped with an underwater backpack and an auxiliary ballast tank on each of the legs, allowing underwater activities. There was no difference in the appearance of the GM as the base, but some were subjected to pressure-resistant processing. To dive underwater, seawater is injected into the ballast tanks. However, this machine has a slight buoyancy even when the ballast tanks are full, so it was designed to dive using the "dynamical dive method," which uses thrust and a diving rudder. Since the GM didn't have built-in underwater sensors, it was equipped with a periscope-style sensor pod and a handheld sonar gun instead.


  • 60mm Vulcan Gun
A pair of shell-firing armament built into the head. They have low firepower, but are ideal for shooting down small, lightly armored targets such as missiles or attack vehicles due to their high rate of fire.

Special Equipment & Features

  • Sensor Pod
A wired sensor pod mounted on the back. The pod can be ejected from a point at a depth of 45 meters to obtain information on the sea surface.
  • SPG-02 Sonar Gun
A small portable sonar developed for mobile suits because it was not possible to secure space for mounting a sonar on the machine.


The plans for the GM Sloep were put into production and rolled out in November of U.C. 0079, but the plan for this machine was ultimately rolled into the RAG-79 Aqua GM and the existing GM Sloep units were converted back into regular GMs. Only two were left as testbeds for the development of an amphibious MS, and were used for data collection, but these two were also dismantled later.

Picture Gallery


External Links

MSV-R Mechanics
Earth Federation
Mobile Weapon
Full Armor Gundam's variations
FA-78-1B Full Armor Gundam Type B | FA-78[G] Full Armor Gundam Ground Type
Heavy Gundam's variation
FA-78-2 Heavy Gundam (Unit 2)
GM Cannon's variations
RGC-80-1 GM Cannon Test Type | RGC-80S GM Cannon Space Assault Type
GM Sniper Custom's variations
RGM-79HC GM Guard Custom | RGM-79KC GM Interceptor Custom | RGM-79SC GM Sniper Custom (Shimoda Squad Type)
GM's variations
RGM-79LV GM Night Seeker II | RGM-79U GM Sloep | RGM-79V GM Night Seeker
Guntank's variation
RMV-3M Local Control Type Guntank
Guncannon's variation
RX-77-3D Guncannon Heavy Arms Type D
Gundam's variation
RX-78-2 Gundam Real Type | RX-78SP Gunner Gundam
Ball's variations
RB-79F Ball Type F | RB-79M Ball Type M

Aircraft / Spacecraft
FF-S5 Raven Sword | FF-X5 Prototype Core Fighter | FF-X7BstPLAN004 Core Booster Plan004 | G-Fighter Assault Landing Type | G-Fighter Bomber Type | G-Fighter Space Type
Transporter / Supply Ship
CB-X5(SGT) Assault Type Gunperry
Cruiser / Mother Ship
SCV-102 Nelson
Principality of Zeon
Mobile Weapon
Agg's variation
EMS-05F Azock
Zaku I's variation
MS-05Q Zaku I (Norris Custom)
Zaku II's variations
MS-06A Zaku II First Mass Production Type | MS-06FS Zaku II | MS-06R-1A Zaku II High Mobility Type | MS-06S Zaku II Commander Type
Zaku II Ground Type's variations
MS-06D Zaku Desert Type | MS-06G Zaku II High Mobility Ground Type | MS-06GR Zaku II High Mobility Ground Type Kai | MS-06JK Zaku Half Cannon | MS-06K Zaku Cannon (Gatling Gun Equipment Type) | MS-06V-8 Zaku Tank (Wild Boar)
Gouf's variations
MS-07G-1 Gouf Vijayanta | MS-07G-2 Gouf Tactical Assault Type | MS-07W Gouf Combined Test Type
Dom's variations
MS-09 Dom Cold Climate Type | MS-09M Dom Mermaid | MS-09R Rick Dom Dozle Zabi Custom | YMS-09J Dom High Speed Experimental Type
Gelgoog's variations
MS-14B Gelgoog Uma Lightning Custom | MS-14BR Gelgoog High Mobility R type | MS-14C-1A Gelgoog Cannon | MS-14GD Gelgoog G
Z'Gok's variation
MSM-07N Ram Z’Gok
Gyan's variation
YMS-15E Gyan Eos
Bigro's variation
MA-05R Big Ruf
Grublo's variation
MAM-07-X3 Grublo Underwater Bit-Mounted Prototype
Zakrello's variation
MAN-00X-2 Brawrello
MSM-06 Jurick

Aircraft / Spacecraft
Dodai GA | G87 Luna Tank | Gobble
Cruiser / Mother Ship
CCM-91 Chimaira | Gagaul-class