Ship Expeditions

Hello, I'm Tobi :D
So in Anno 1404, yes again talking about Anno, there is cool thing called Ship Expeditions, You can get "Map" to some treasure, load cargo with required resoruce and send ship away.
If ship is lucky he will return with some special equipment or resoruces.
Currently after exploring map and researching everything in game our Science and Ship is basicly useless... its just standing there doing completly nothing...
Thats why at edges of map we can find "Expedition zones"
We can load ship with lot of "Lab Equipment" in order to exchange it for rare "items" that can be used for "Special construction" or just find tons of resoruces.
ofc. more expansive Lab Eq. we put on ship for expedition = more amazing loot.
Also for example Statue of Maintance and other "Special buildings" will require parts in order to build them, and we can find these parts by sending ship on Expeditions.