It is assumed the frigates have high maneuverability in all dimensions. Stalwart-class have 2 large and 2 small exhausts. There are two types of exhausts on frigates, large and small.
The engines use the energy from this to create thrust out of the exhausts on the frigates.
The frigates use thermonuclear fusion reactors that use deuterium for fuel. It and the Paris-class heavy frigate share the height of 112.3 metres (368 ft). The Stalwart-class frigates is the smallest class of UNSC frigates, only 478 metres (1,570 ft) long. However, usually they are only powerful in numbers. It was a multipurpose ship, evenly balanced between troop transportation and fleet support. The Stalwart-class frigate is meant mainly for fleet and/or planetary defense, such as Earth's home fleet. During the Battle of Mombasa, the In Amber Clad would chase the Solemn Penance through a slipspace opening to Installation 05 and start the Battle of Installation 05. At the Battle of Earth a number of Stalwart 's would defend the planet. The Stalwart would be in use for several more years. 15 of these ships would be destroyed in the Siege of Paris IV, a battle at Iota, and the Fall of Arcadia. The final ship of this grouping would be the UNSC In Amber Clad, which launched on February 9, 2547. 16 Stalwart 's would be built together at the Sinoviet Naval Yard AS-9 at Reach.
