A big flying boat with props? You need a Short Sunderland. If you can live without the props, don't need it to fly very high, and want to go full Bond Villain, then a Russian Ekranoplan ground effect vehicle would be ideal.
Easier than buying a Lun class Ekranoplan, which is what I'd want. Along with a Klein International blue suit and a Jankel armoured Hilux for the full Hubertus Bigend schtick.
A big flying boat with props? You need a Short Sunderland. If you can live without the props, don't need it to fly very high, and want to go full Bond Villain, then a Russian Ekranoplan ground effect vehicle would be ideal.