The answer to the original question is simple, given a good and safe yacht , both cats and monohulls from 40 ft and up are good long passage
makers, it is not the baot that is capable of doing this , it is about the crew and can they handle the situation, I have sailed around 300000 Nm in my life most with monohulls and the last 20 years mostly cats and have not ever been in a situation where the boat could not handle it. the crew is a different story ranging from seasickness to making the wrong decisions over and over again.
The most commom mistake that bring boats and crew into danger
is putting in reefs
do not wait until the weather
hits you if you where to carefull all you do is letting a reef out.
Sail safe and all 40 ft and up cats and mono,s sail well .
I prefer the cats because of the comfort, space and speed .