It's really not a Type23 derived hull form in any way. The sonar dome for that comparison is wrong, so, too, are the stabilisator fins and generally the underwater hull also. In addition this design has onlyone screw, which I don't believe the British would settle for. Now, as for the u/w hull I have drawn it for my own Type23s. You can also look at my Type22s to divine how a proper British built hull-form would look like. Besides - who's Figaro????