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Iron Coffins

Iron Coffins mod changes and improves the underwater damage control and survival mechanics. Changing the internal pressure handling, air and water flow between the compartments, interactions with the hatches, blocking of leaks, realistic air usage by devices and much more!

► Partially tested on game version 2022.1, should still work on b131.
► All features of the mod are working without the need to start a new career.
► Mod uses custom actions for leak blocking, repair and others, which are saved to the savegame when they are in use. If you want to disable the mod, the safest way is to dock, have all damage and leaks fixed, save and disable the mod on next game start. I have found few cases, where unsubscribing from the mod prevented the save where it was used from loading, even after doing this procedure however. Please let me know in case of any issues.
► This mod requires the Custom Actions mod to work properly, please make sure you are subscribed to it and it is enabled in the launcher.
► Incompatible with IBC mod.
► It has been reported that there are issues together with the "More officers on board" mod.

As in its predecessor, the Improved Ballast Control mod, all of the ballast controls are unlocked in most of the conditions unless damaged or the Uboat is docked, there are no artificial restrictions in controlling of the ballast. New deck awash and blow ballast with diesels modes are added.

Dive planes are moving according to internal steering angle and are limited to real steering angles. Depth steering control at low depths was reworked, it is now possible to surface the boat dynamically just using the dive planes to have the opportunity to turn on the diesels. Sailors are staying at the dive plane controls during deck awash, this greatly improves the diving response.

Vanilla compartment pressure handling was overhauled and the internal pressure is now correctly calculated based on the amount of water and air in the compartment. Additionally to water flow, air flow is also modeled. Devices consume air and pressure has to be equalized with outside of the boat. Effect of the pressure and water on the devices in the compartment has been overhauled.

Leak blocking has been overhauled and improved with manual sailor leak blocking action and possibility to block leaks with two characters. When leak is being repaired, flow rate decreases as the repair progresses.

All hatches now display pressure on their opening and closing sides. Hatches are fully blocked when pressure difference is too large (will be configurable). Hatch damage mechanics is also overhauled and is more realistic.

New action allows dismantling of non essential devices to obtain spare parts for critical repairs.

New toggle actions have been added to the new "Toolbox" device in the stern torpedo room. You can customize various mod settings there. Settings are preserved in the savegame.

Durability of rebreathers is increased. Mod disables the automatic hauling of fallen (injured/drowned) crew members to safety by other crew (will be configurable). When officer is ordered to go into already evacuated compartment, he will stay there, instead of running away after he finishes the current task.

If you experience problems, please check my When the mods don't work... guide and write in the discussion below the mod if the basic steps from the guide have not helped you.

Modding the game at this level is extremely time intensive and there has been many days of work sank into this one. If you like my work, please consider supporting me on Patreon or through PayPal. Any small contribution will help me to devote more time to the modding and bring you some more cool stuff in the future. Your support is 100% voluntary, all content I create is available for free. Thank you!
https://www.patreon.com/uboatsalamander
paypal.me/uboatsalamander

My thanks goes to TheEngineeringGuy for sharing his knowledge and helping in the effort of improving the realism of the underlying models and physics. Same to the few of my dedicated supporters and many of the people on the UBOAT Discord and Steam for their help with testing, ideas, suggestions and general encouragement for my work :)