RMI-13 Portman

Model number: RMI-13
Code name: Portman
Unit type: mass production amphibious fourth generation knightmare frame
Manufacturer: Holy Britannia Empire
Operator: Holy Britannia Empire
First deployment: unknown
Accommodation: pilot only, in standard cockpit in torso
Dimensions: overall height 4.69 meters
Weight: combat weight 5970 kg
Armor materials: unknown
Powerplant: energy filler, replaceable electrical cartridge, uses Yggdrasil drive superconductor transfer system, power output rating unknown
Equipment and design features: landspinner high-mobility propulsion system, mounted in legs; cockpit ejection system
Fixed armaments: 2 x slash harken, mounted on chest; 4 x torpedo launcher, mounted two in each shoulder

A part of the fourth generation of Knightmare Frames, the RMI-13 Portman is the first (and apparently only) amphibious Knightmare to be produced. Based on data from the RPI-11 Glasgow, much of its outward design is made with hydrodynamics first in mind. In addition to the standard slash harkens, the Portman also mounts a set of torpedo launchers in its shoulders, primarily useable while cruising through water. Though intended to operate primarily underwater, the Portman can also be used on land, though its speed and combat skills are poor in this area. During the battle on Shikinejima Island, Princess Euphemia Li Britannia commandeers a Portman in a failed attempt to warn Suzaku Kururugi of an incoming Britannian bombardment, aimed at wiping out the Order of the Black Knights. Despite being an experimental model, the Portman is fielded during Britannia's war with the European Union, and its success inspires them to produce an upgraded model, the RMI-U14 Portman II.

Pilot: Euphemia Li Britannia
Appearances: Code Geass: Lelouch of the Rebellion; Code Geass: Lelouch of the Rebellion R2

Cruising mode
Emergency ejection system
Manipulator
Torpedo launcher