Nobody spoke to the Mammet Voyager #004A, I take it...
Ask about Exploratory voyages, then Exploratory voyage deployment. I'll just quote him though;
No indication how exactly this will work, but basically all you can do is send them off and hope for the best. If it's tied to rank, good. If it's a random chance your airship can bring back the means to register additional ones... Eh...To chart an exploratory voyage, access the flight control panel and select an airship, followed by Deploy airship. Once you have finalized the details, select Deploy, and the voyage will commence.
Each voyage will require a number of ceruleum tanks, which can be purchased from resident caretakers with company credits.
Once your airship returns, you can review the voyage log and collect any items found during the voyage. These items may prove useful in drafting plans for new projects.
As you continue to conduct exploratory voyages, you will gain access to facilities for registering and housing additional company airships.