Heya! Mod looks awesome, good work! Just askin' if it could be standalone? Also maybe have settings which shell is available in production? The options might be bloated to some. Overall great asset for the defence. :)

Thanks for asking. Firstly, the mod have to depend on AAI ironclad mod since it provides the underlaying mortar code and graphic resource. However, I can try to remove the dependency to gunboat + mortar turret fork mod. I did not do so since it will cause the mod not compatible with the original gunboat + mortar turret fork mod, and I do want to pay my respect to their work. I can create another standalone mod which directly depends on AAI Ironclad tho, in case someone don't want to have the gunboat at all.

Regarding disable item settings, I can add some startup settings for that, but that would be low priority and I think there is another postprocessing mod to delete custom items https://mods.factorio.com/mod/DisableItemsMod.

I think I can change the mod to depend on AAI ironclad but optional depend on gunboat + mortar turret fork, just need some extra work but that should be optimal solution. Regarding the AAI ironclad, I may add a startup setting to disable that entity/research

ironclad-gunboat-and-mortar-turret-fork is an optional dependency now