Nuclear base load and gas turbines serve different power demands

What power plant would suit the large Type 83 concept?

A reactor sized for steady base load could pair with gas turbines for rapid power surges, although a politically realistic British design would probably use conventional gas and diesel machinery.

Reactors are happiest at a stable output, so the concept keeps one running continuously while batteries absorb spare generation. Gas turbines can start quickly when lasers or other systems demand a sharp increase, and diesel generators add emergency backup. Cycling multiple reactors is unattractive, while battery-only large warships remain unlikely in the next several decades because sustained combat can exhaust stored energy.