Issue When Trying to Assemble 2nd Airship.

[Duuude007]

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...