... Do I need to talk about the logistics of taking 18000 people the long way around the globe on 5 ships tops... Surely someone is noticing the problem with that? That's 3600 people per ship plus all the equipment, goods and resources they are supposedly being sent with, going the LONG way around the world. They'd need more food, and I don't think all the preservatives under the sun keep if fresh that long in this time period...
As an ally, I think you need to reconsider your numbers because if I'm honest I don't think most will survive this journey. Remember those random events Gowia was talking about? Well, I'd say pretty high on that list would be the chance of someone having brought a disease onboard or some of your food stores going off, and given your ships massive passenger numbers, that could be very, very dangerous indeed...