Or do your own google search on 'catamaran' and 'aircraft carrier' and read through some of what turns up.
Funny thing... Zippo's ultimate hero, the supreme fuhrer of the uebermenschen geschlect walks straight into WW-II without any sort of a plan to fight a war against England.
Ten minutes use of the supposedly superior intellect should have produced this one or something totally like it. You give Doenitz the three hundred ocean going U-boats he wants and THEN you guarantee that those wolfpacks will be invulnerable to attack from escort vessels by putting Messerschmidts and Focke-Wolfes over their heads and the funny thing is, you wouldn't even need the three kinds of aircraft which British, American, and japanese doctrine called for, all you'd need is fighters since the entire striking arm of the whole thing is the U-boats.
No bombs, torpedoes or anything else, all the carriers would have needed would have been aircraft, aviation fuel, and machinegun ammo.
And he could have announced some new kind of merchant ship in 33 with nothing above the hull which couldn't be stripped off in a day's work and every two of them would be three days work from being an aircraft carrier.
One other little kicker in this one... Having the first two years of the air war fought over English soil guaranteed that every German pilot shot down became a prisoner while English pilots just walked back into town and got into another airplane. The ocean would have been neutral territory and U-boats could have picked most down pilots.
I almost can't believe what a total moron that guy Hitler must have been not to have figured this **** out.