Bang on Noyade, and close enough. Well done. The 3MT5A (see below) had twin-fins and other mods as a result of stability issues with the single-fin version, the 3MT5. Only four 3MT5s were built. As it turned out the 3MT5A also had stability issues and only seven were produced. Those in service were withdrawn in 1941.
I guessed you'd have it once you were back on. You have control..... RR