Oh weird. So 4 Letani Warriors being transported by a carrier could produce a dreadnought?
Hmm... based on this, there may still be a misunderstanding here. Letani Warriors (I) have a production value of 1. That means that each Letani warrior can produce 1 thing; it does not mean that they get a free resource for producing something. So, even 1 Letani Warrior can build a dreadnought, but you still have to pay 4 resources and/or trade goods to do so. 4 Letani Warriors could build 4 dreadnoughts, provided you have the 16 resources to do so and have the fleet supply in the system to support them.