Editing Sight one of the castles on the roof

{{Action
|Icon = neathroof.png
|ID = 260763
|From Storylet title = At the Command of the (Airship Name)
|Description = You are close enough to mark its exact position.
|Unlocked with = {{Lock|Far Afield from Station IX|(30 + {{Use|Sighting of a Landmark on the Roof|Type=Math}} × 25}})
|Success title = The map and the territory
|Success description = Your lookout notes its [...] size and position, reckoning by your movements since you left Station IX. Her report leaves out its oddly bent shape, its covering of mottled and ashen skin, or the way that it seems to ''quiver'' as your vessel approaches.
}}
*{{Gain|Aerial Surveillance|45|message=A little more of the Roof has been surveyed.}}
*{{Gain|Sighting of a Landmark on the Roof|1 x}}