[quote=@Skepic]
Aka, flying torpedos. Am I right? 
[/quote]Well, combination of the Ketering Bug, rocket-assisted takeoff units and radio navigation systems.
But yeah, basically they're big flying bombs designed to be launched from airships which also have the equipment to provide the guiding radio beam for the weapon.
This method kind of works albeit the fact these things are 7 times more expensive than normal bombs and your options are limited to the largest type of bomb regardless the mission are forcing me to be more careful at the use of these.

I don't call them flying torpedoes because sinking ships is the last thing they can do. While riskier even the use of plain old big bombs is better at that job.