- Can detect Submarines (note: immune to subs, because they are technically land units)
- +33% Defense vs all units (but not cities)
Great to see the zeppelin line being updated! Particularly like the movement changes, of course

Overall aligns very closely with my vision for these units. Besides the very simple change I made in 'perfidious recon', I've got a similar setup going in an ever-unfinished mod, similarly using this zeppelin art asset, but transitioning into helicopters instead of UAV. On that front I'm looking to have these units enabled by a corporation-like building. Anyway enjoy this approach as well.
PD, I'm curious about your reasoning with the above quoted traits, in particular the
bolded portions... I can infer my own gameplay reasons for these, just curious on your take...
In this sense, the following reference comes to mind -- seems they were not truly immune to subs nor restricted to attacking cities:
"On the night of July 18, 1943, the
K-74 was protecting ships through the Florida Straits. The crew picked up a contact on
K-74’s radar and began searching the area for a U-boat. They quickly found the
U-134 silhouetted against the water by moonlight. Although still 20 miles from the convoy, command pilot Lt. Nelson G. Grills determined that the submarine did pose a threat. They maneuvered the
K-74 into a position to make an attack run with the ship’s depth charges before the
U-134 opened fire with machine guns and its deck gun. Although it suffered some damage, the
K-74 flew over the
U-134 only to have its depth charge fail to drop. It managed to fire 100 rounds of .50-caliber machine gun bullets at the submarine, but the machine gun fire the
K-74 sustained from the submarine took a significant toll. The
K-74’s starboard engine caught fire, though it was quickly extinguished, and holes in the blimp caused it to quickly lose altitude. It plunged into the sea shortly before midnight."
https://airandspace.si.edu/stories/editorial/k-ships-vs-u-boats
There is another set of airship art on CF but I've never been able to get it working in-game -- perhaps someone with more skill for these things could tweak it to represent the k-class airship:
https://forums.civfanatics.com/resources/civ5-great-war-airship.21998/