That is correct you have to mix and match your parts to build an airship that suits your needs, whether you want shorter-fast travel with high yields, or slower-longer distance voyages. My main airship I currently run Inv. II hull, odyssey bladders, enterprise fore/aft castles which allows me to hit a few of the level 50 voyages at a time in the fastest amount of time. Or you can run a Bronco hull and just hit 1 with higher end aft/fore castle to gain a higher yield of specific items.
Update for Sector 22 - didn't screenshot it but they drop Deep-Blue Clusters.
Still no sign of sector 23 - i've been sending it to sector 16 then sector 22 so will update again in about 45 hours if there's anything new to report.
