Please tell me you're joking. Devonport is, without a doubt, the most miserable hell hole I've served in or around in some 20 messes and two services. Take a major surface unit, around twice the size of Ocean through the Guz in, at night? No thanks. It's bad enough in almost anything larger than a P2000, never mind being a right hassle to dredge out next to Pompey...with it's easy connection to civilisation and all that entails.
Guz is at the end of the line.