UBOAT — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| 2026.1 Patch 16 | 2026-05-03 | Dear captains, There is a new patch available for update 2026.1. Changelog: Type IX: - Fix: It wasn't possible to open hatch from the engine room to the control room in FPP. Damage system: - Water inflow rate through hull breaches was considerably decreased to compensate for the fact that enemies are much better now at dropping depth charges and to some degree also hitting the U-boat with guns on the surface. Physics: - Fix: Ships with long and narrow shape like F-class destroyers could be thrown out of the water, if 140x time compression was used in the side view and they had their rudders turned fully. Resupply: - U-boat is now automaticall |
| 2026.1 Patch 15 | 2026-05-01 | Dear captains, There is a new patch available for update 2026.1. Changelog: Type IX: - Fix: Gyrocompass on the conning tower was missing. - Fix: Type IXC/40 had a few spots with a wrong texture on the deck. - Fix: Sailors assigned to the officer using one of the AA guns on Turm IV weren't using the other guns. - Fix: 43U gun (the four barrel AA gun) on Turm IV couldn't be used in FPP. The officer was quickly stopping to use it after starting the action. Technical: - Memory usage improvements. General: - Fix: Periscope was sometimes instantly rotating somewhere else after locking a target. Yours, DWS |
| 2026.1 Patch 14 | 2026-04-30 | Dear captains, There is a new patch available for update 2026.1. Changelog: Localization: - Russian localization update by Hard. Type IX: - Fix: Sometimes aircraft could be detected on the surface, while playing with Type IXC or Type IXC/40, even though U-boat was submerged below periscope depth and had no means of detecting them. - Fix: Diesel engines often continued to be animated after switching to electric motors. Ports: - Fix: If tide was very low, it could be problematic to leave or dock at Penang. Missions: - Fix: Missing translation on one objective in Join Monsoon Group mission. Crew: - Fix: Merchant skill no longer requires the offi |
| 2026.1 Patch 13 | 2026-04-28 | Dear captains, There is a new patch available for update 2026.1. Changelog: Localization: - Russian localization update by Hard. - Japanese localization update by かねのもうじゃ. - Fix: Resolved issue with cyrillic characters in settings and the port menu. Missions: - Fix: It was possible for the mission script to get stuck after sinking HMS Dorsetshire in Cape Town patrol. - Fix: In certain save files, the issue with not being able to pick campaign missions with Type IX could still remain. Ships: - Fix: Type VIIB NPC U-boats had a gap in their 3D geometry. Graphics: - Fix: Resolved an issue that could make character eyes pink after following a repr |
| 2026.1 Patch 12 | 2026-04-26 | Dear captains, There is a new patch available for update 2026.1. Changelog: Type IX: - Fix: After installing an anti-radar coated snorkel, the boat upgrade UI was still claiming that the normal snorkel was installed instead. - Fix: Some bulkheads weren't closed after issuing an order to close all bulkheads. - Fix: Crew pathing issues with some bulkheads closed. Ships: - Fix: Type VII NPC U-boats had a gap in their 3D geometry. Flotilla bases: - Fix: If a commemorative plaque was earned in a flotilla base, while playing with a U-boat that had a tiger and boat or clover emblem, then the plaque wasn't appearing and only the boat name was written |
| 2026.1 Patch 11 | 2026-04-24 | Dear captains, There is a new patch available for update 2026.1. Changelog: Type IX: - Added Type IXC NPC U-boats to the game. - Fix: Conning tower upgrade options weren't appearing on Type IXC U-boats. - Fix: AA guns on Turm II and Turm IV couldn't be reloaded with new ammunition. - Fix: Wrong data was displayed in Overview screen in a few places (including a wrong armament name). Missions: - Fix: Issue that was causing the assignment summary screen to get stuck and stop progressing, while completing a distant patrol such as Eisbär. - Fix: In tutorial no. 2, if the tutorial destination happened to be in a relatively shallow location, it coul |
| 2026.1 Patch 10 | 2026-04-23 | Dear captains, There is a new patch available for update 2026.1. Changelog: Type IX: - Fix: Snorkel wasn't refreshing air correctly on Type IX. - Fix: Several campaign objectives weren't available for Type IX. Ships: - Fix: Wrong highlight mesh on LST ships. Missions: - Fix: Messages with new orders are now retransmitted during group patrols, such as Eisbär, when the first tranmission was missed. If the message wasn't received, it could make the mission stuck. - Fix: Selecting a new assignment on the sea wasn't working. Yours, DWS |
| 2026.1 Patch 9 | 2026-04-22 | Dear captains, There is a new patch available for update 2026.1. Changelog: Type IX: - Fix: Improved flooding water meshes inside compartments to fix water flickering on the other side of some walls. - Fix: Corrected icon position for the bridge activator. - Fix: Aft torpedo launchers could become blocked by crew slots that weren't physically blocking loading. This issue may persist for some time in saves or until the boat is changed to another type and back. Type II: - Fix: Buoyancy notification was calibrated wrong for Type II. When the boat's buoyancy was at its typical value on the surface, it was often reported in a range of 80% - 90% ra |
| 2026.1 Patch 8 | 2026-04-21 | Dear captains,There is a new patch available for update 2026.1. Changelog:Type IX:- Fix: Two compartments had mismatched shape of flooding water mesh, not matching the shape of the compartments.- Fix: Captain's cabin folded doors were stopping to work after saving the game state and loading it back.- Fix: Echosounder button and knobs weren't interactable.- Fix: Occlusion culling precision issues in FPP, that were making some geometry to disappear with no apparent reason.Effects:- Fix: Nights were heavily overexposed when "Darker nights" setting was toggled off.- Fix: Pink texture could appear on heavily flooded compartments.General:- Fix: If |
| 2026.1 Patch 7 | 2026-04-21 | Dear captains,There is a new patch available for update 2026.1. Changelog:Type IX:- Fix: Type IX family wasn't appearing in U-boat picker UI in old saves.- Fix: Pathing issue near one of the tables, that could make a sailor stuck.Physics:- Fix: Second race condition in physics code that was happening randomly and could have various side effects.Crew:- Fix: Captain could freeze after tuberculosis event. Automatic fixing of this issue in affected saves was added.- Fix: Vignette was remaining on the screen after a dialogue with a war correspondent.General:- Fix: It wasn't possible to save a game state after inspecting a neutral merchant ship.You |
| 2026.1 Patch 6 | 2026-04-21 | Dear captains,There is a new patch available for update 2026.1. Changelog:Weather:- Fix: Discrepancies between weather forecasts and actual weather.- Fix: Cloudy weather and rain were too rare.Tutorials:- Fix: Tutorial highlight could be missing inside the menu dropdown during tutorial no. 7, if tutorial was activated without using that menu earlier at any point.General:- Fix: After vacation, assignment selection screen was becoming stuck.- Fix: Resolved two issues that could prevent saving the game state.Yours,DWS |
| 2026.1 Patch 5 | 2026-04-20 | Dear Captains,There is a new patch available for update 2026.1. If this patch causes issues, please try to verify game files integrity as described in this article:Steam Support :: Verify Integrity of Game FilesLocalization:- Fix: Added missing translations to new loading hints.Physics:- Fix: Race condition in physics code that was happening randomly and could have various side effects.Story system:- Added voices to merchant ship captains.- Fix: If a merchant ship was evacuated and its cargo hold was searched, there was no cancel button available there and decision buttons that were available shouldn't be there.- Fix: If a story was played in |
| 2026.1 Patch 4 | 2026-04-19 | Dear Captains,There is a new patch available for update 2026.1. Changelog:UI:- Fix: Portraits could be missing in the section view, if several steps were done, involving port menu.- Fix: If HQ view was toggled while port menu was active, the port menu wasn't disappearing and there was UI overlap.Tutorials:- Fix: Issues with camera after starting tutorial no. 4.General:- Fix: If captain was in a flotilla base and U-boat undocked, the captain was not reacting to any orders afterwards.- Fix: HQ could clip with a flotilla base scene.- Fix: Wheels in a truck with supplies could still rotate after the truck stopped.Yours,DWS |
| 2026.1 Patch 3 | 2026-04-18 | Dear captains,There is a new patch available for update 2026.1. Changelog:Save compatibility:- Fix: After loading any save from a previous version of the game, the center of mass of the U-boat was off until the U-boat was swapped to another type (it's the 45 degree rotation bug).Type IX:- Fix: Snorkel was in a vertical orientation right after installing it.- Fix: On Type IXA and Type IXC, there was an extra ladder activator always visible in FPP that was meant to be visible only when Turm IV was installed on the boat. If it was used, it could make the character stuck.General:- Fix: If a boat type was unlocked by paying 1 ship upgrade point an |
| 2026.1 Patch 2 | 2026-04-17 | Dear captains,There is a new patch available for update 2026.1. Changelog:Type IX:- Fix: Type IX family was missing from the ship selector UI, after talking with the flotilla commander about a new U-boat.General:- Fix (regression): Changing a U-boat to a new type was breaking the UI, if port menu was enabled in the settings.Yours,DWS |
| 2026.1 Patch 1 | 2026-04-17 | Dear captains,There is a new patch available for update 2026.1. Changelog:Type IX:- Fix: Type IXA and Type IXC/40 were using wrong geometry for snorkels.General:- Fix: Added silhouettes for HDML and Royal Oak.- Fix: Screen could become locked after following these steps: opening map when port menu was active, undocking, leaving port area and toggling map off.Yours,DWS |
| Type IX: Distant Coasts is out now - Update 2026.1 launches alongside! | 2026-04-17 | Dear captains, The day has finally come. Type IX: Distant Coasts and the free Update 2026.1 are live. After months of extra work, testing and polish, we're proud to finally hand you the keys to the Kriegsmarine's most ambitious ocean-going U-Boats and send you to theaters of war you've never been able to reach before in UBOAT. Thank you for your patience with the delay from January — the extra weeks paid off. The update is more stable, more compatible with existing campaigns, and noticeably richer than what we could have shipped at the start of the year. Type IX: Distant Coasts — the DLC The Type IX family was purpose-built for oceanic warfar |
| UBOAT x Ship Graveyard Simulator 2 Crossover | 2026-03-05 | Dear Captains! We are very pleased to announce a unique collaboration - UBOAT has officially arrived at Ship Graveyard Simulator 2- Submarines DLC! 💥 Our iconic submarine model is now available as a free content update for all owners of the SGS2 Submarines DLC We believe this is a perfect opportunity to experience our submarine from a completely different perspective. It's a great chance for both our community and Ship Graveyard Simulator 2 players to see the same submarine in a whole new light! We worked closely with the Ship Graveyard Simulator 2 dev team to ensure that every piece of our model is highly accurate. We made sure that every s |
| Update Regarding Type IX: Distant Coasts DLC and Update 2026.1 Release Date | 2026-01-20 | Dear Captains,We have made the tough decision to move the release date for the Type IX: Distant Coasts DLC and the free Update 2026.1 from January 29th to April 17th.We understand that a delay is never good news, especially so close to the expected launch. However, after evaluating the current build, we believe this extra time is necessary to ensure the DLC is truly ready for release.How we are using the additional timeOur primary goal with this extension is to deliver a stable and polished experience from day one. Specifically, this time will allow us to:Improve Stability: We feel that extra time is needed to fix several issues introduced by |
| Development blog: Type IX, Flotilla Headquarters, Missions | 2025-12-01 | Dear captains,We are back with a new development blog! This time it's a long one.As always, we’ve been working hard on the next updates for UBOAT. Let’s dive into the details.Type IXWe are wrapping up work on the Type IX family, which will consist of three variants.Type IXA is available from the beginning of the war in 1939. It's unique in that it has three periscopes.Type IXC has an extended range over the IXA and is the main workhorse of the Type IX line.Type IXC/40 has even greater range and an upgraded conning tower by default.These will be the largest U-Boats in the game, with the highest range and vastly more living space. This makes th |