The RMS-192M Zaku Mariner is a mass-production amphibious mobile suit first featured in the anime series Mobile Suit Gundam ZZ; the design was later updated and featured in the novel/OVA series Mobile Suit Gundam Unicorn. The units that appeared in Mobile Suit Gundam ZZ were piloted by Flynn, Eyne, Beats, Green and Fritz.
The RMS-192M Zaku Mariner is the Earth Federation's production-line version of the Principality of Zeon's MS-06M (MSM-01) Zaku Marine Type M-1 Prototype which was tested during the One Year War. Developed as an improved version of the MS-06M, it featured a large hydrojet thruster backpack that provided propulsion, which could also be jettisoned so it would not interfere with the mobile suit's mobility or combat effectiveness on land. Like previous Earth Federation amphibious mobile suits, the Zaku Mariner's armament consisted mostly of missiles and other explosive weaponry including a total of 14 SUBROC (SUBmarine ROCket) launchers in its shoulders and backpack as well as a handheld missile launcher and a magnetic harken for melee combat.