Portman

Portman
Part of the fourth generation of Knightmare Frames, the RMI-13 Portman is the first amphibious Knightmare to be produced. Much of its outward design is made with hydrodynamics first in mind. In addition to the standard Slash Harkens, the Portman has a set of torpedo launchers mounted in its shoulders, and a hydro jet pack mounted on its back. 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.
 * Series: RMI-13
 * Height: 4.69m
 * Weight: 5970kg
 * Weapons:
 * Slash Harken × 2 (スラッシュハーケン, Surasshuhāken)
 * Torpedo launcher × 4
 * Equipment/Installment:
 * Landspinner propulsion system
 * Cockpit Ejection system
 * Hydro Jet Pack

Portman II
A upgraded version of the Portman, the Portman II appears in 2018 during an attack on the Black Knights' submarine. It is considerably faster than the original, and appears to be even more specialized than its predecessor, mounting an extra pair of turbines on its forearms; the large, three-fingered claws of the original are replaced by much smaller, 5-fingered hands mounted on the undersides of the turbines.
 * Series: RMI-13
 * Height: 4.72m
 * Weight: 5975kg
 * Weapons:
 * Slash Harken × 2 (スラッシュハーケン, Surasshuhāken)
 * Torpedo launcher × 4
 * Equipment/Installment:
 * Landspinner propulsion system
 * Cockpit Ejection system
 * Hydro Jet Pack

Trivia
A single Portman II appears during the Battle of Mt. Fuji, with Lelouch's infiltration unit, upon being the last unit to try to enter, it is destroyed when the blaze luminous of Damocles reforms, and it crashes.