Issue When Trying to Assemble 2nd Airship.

Has anyone encountered an issue when trying to assemble their 2nd airship? We used an identical prototype and created a 2nd set of the 4 parts, but I'm not seeing the option to assemble it. We assembled the first one just fine, but the 2nd one there is no option. I have flight credits and ceruleum tanks. We're going to wait until our first airship comes back from its exploration and try again, but I'm stumped.

EDIT:
So we just completed the 4 parts of the Invincible type airship. Still not getting option to launch it. At this point it must be dependent on the rank of 1st airship, or there's a glitch. I may switch out the parts of our first airship with invincible parts when it comes back from the voyage tomorrow.

EDIT:
Rank 20 now, still no option...

I see the same thing. Pure speculation: The second one is unlocked through same means? Perhaps leveling the first airship.

This would be a rather smart way to space out the violent evacuation of the many crafting materials that go into tier 1 airships.

Same for us here ... We also gather materials for 4 airship ... But as far I can see Tier 2 parts can be replace in the first air ship so i Hope when our airship will grow we'll be able to add a new one

Did anyone figure this out? We're stuck here too.

also stuck on this

also stuck on this. I mistakenly built the parts for 3 more airships only to find I can't assemble them

Also stuck on this.

no ones figured this out still huh?
there's like zero indication anywhere of there even being more then one slot.

Quick question for those that have the parts for a second ship. Have you tried buying another flight credit? We only have the one at so we're waiting before starting on the next one ad this seems to be a global thing.

yeah I bought two extra flight credits. nothing. no options.