Game update31 Jan 2026v 1.4.30 change list• Added Spanish localization • Added drop shadow to torpedo track time markers to make them more readable against light blue background • Fixed bug where side mission search ships would give up and leave on loading a saved game
• Added channel to separate Nagashima Island in Sea of Japan • Added separate saved value for Wait in Place “Stop for Targets of Opportunity” (vs Fast Travel) • East Indies: Prevented getting side missions on the coast of Australia
• Added features to Custom Markers: Time, speed, and extrapolated position • Added saving/loading of crew location assignments • Added saving/loading of location repair order • Added some missing text localizations
• Raising periscope higher above the water now increases its vision range by up to 750 yds (moddable) • Raising periscope higher above the water now increases range at which enemies can spot it by up to 2x (moddable) • Added “Help” buttons to some HUD elements • Added corner markers to buttons with additional long-press menus • Fixed bug where AA gun could jam and interrupt firing • Fixed not b…
• Fixed incorrect draft values in Recognition Handbook • No longer hide right rudder button when waypoints menu is open if UI is in Mouse mode • Moved volume slider above Music checkbox (to make clear that it applies to all game volume) • Modding: Added editor for the order of Auto-Upgrades • Fixed Mission Status “Score” page showing ship displacement instead of points • Fixed chart ship marker…
• Periscope/Bridge vertical tick marks now indicate 1 degree each at minimum zoom • Ship Recognition Handbook: Size reference lines now account for model scaling • Added bearing (angle to end-point) on Custom Marker line • Modding: Added “Sinking Ships” section to Game Vars
• Modding: Simplified Vehicles/Weapons by only showing fields that actually apply to the current item • Modding: Added section labels to Vehicles/Weapons • Modding: Added per-torpedo-type multipliers for dud/circular run chance
• Deepened Straits of Kammon in Sea of Japan • Long-pressing “fire spread” button now opens the Torpedo Spread Editor (AKA “The Spredator”) • Added vertical wire marker at waterline in binoculars view • Added boat/captain names to management view • Torpedo gyro dial disabled when in periscope or bridge view (since it has no effect) • Modding: Added options to Game Vars > UI to turn off some HUD…
• Sub-Chasers can no longer shoot themselves • Long-pressing the Pause button now hides the HUD • Destroyed buildings are no longer restored when returning to a partially-destroyed enemy base • Modding: Removed Campaign per-mission ModSets, as they didn’t work • Modding: Added hooks to load/play a sound on each notification
• On each patrol, one enemy ship class will award a double point bonus • Modding: In GameVars, reorganized some items out of Difficulty (e.g. all torpedo settings are now under Sub Weapons) • Fast Travel/Wait in Place Targets of Opportunity are no longer detected at radar range if radar has been destroyed • Fixed rare bug where sunk ships could re-float themselves
• Pickup/dropoff side missions: Number of enemy searchers is now randomized (could even be zero) • Your spotters no longer gather info on targets that are not in line of sight • Enlarged HUD notifications button in Touch UI mode
• Added screenshot button to game menu (default hotkey: ‘U’) • Added screenshot settings to Options menu • Enlarged custom marker label text on mobile • Custom marker label text now scales with UI mode • Sea of Japan: Opened up previously impassable channels: • Oshima Island (off west coast of Kyushu) • Omura Bay • Hirado Island • Straits of Kammon (between Kyushu & Honshu) • Sea of Japan: Adde…
• Added button to Continue most recently saved game • Added option to halt Wait in Place on spotting new convoy • Reduced minimum time between time scale resets to 10 seconds (moddable) • East Indies Pack: Adjusted land level of Banda Sea map to prevent rescue missions on marshland
• Added warning + time scale reset when nearing seafloor • Torpedo room now only auto-switches when targeting a ship in Bridge/Periscope view • Crew Auto-Assigner now distributes more evenly (tries to not leave any location empty) • Crew Auto-Assigner will now assign officers to enlisted roles if no enlisted crew available • Boat will now use electric motors when surfaced if engines are offline…
V1.4.3: • Added East Indies Expansion Pack • Added filtering to mission log viewer • Enemy aircraft are now grounded in heavy rain (moddable) • Removed download timeout (for slow network connections) • Modding: Can now set age range for crewmen • Modding: Allow editing of Fast Travel and idle fuel consumption rates • Modding: Allow editing of chart view plot marker fade-out time/amount • Fixed…
• Greatly increased chance of getting at least one “spy rescue” side mission per patrol • Added timer showing delay until dive (Sim difficulty) • Added new enemy fuel depot variant • Enemy convoys are now more and more scarce as a Campaign progresses (reduced by 50% by final patrol; moddable) • Reduced fuel consumed during Wait In Place by 50% (moddable) • Modding: Added field to specify a Mod…
• Made enemy Direct-Fire gunners better at leading a moving target • Fixed recruiting some underage crewmen • Added button to cancel expansion pack downloads
• Torpedo tubes are now reloaded during Fast Travel and Wait in Place • Fixed potential crash when loading saved games with a destroyer listening for ping returns
• Halved Gato’s fuel range (to account for travel to/from mission area) • Enemy ships now might not report your position when hit by an undetected torpedo (chance varies by difficulty; moddable) • Added keyboard shortcut for Advanced Torpedo Controls menu (default: Ctrl-T) • Modding: Number of extra escorts per “whale” at Hard/Sim can now be changed • Fixed missing 'œ' character in French local…
• Time Scale will now only auto-reset to 1x at most once every 30 seconds (moddable) • Fixed crash when certain modding values were set to 0 • Fixed color-picker colors inverted when UI set to Night Mode
• Long-pressing zoom buttons now goes to max/min zoom level • Added more handling of expansion pack download errors • Fixed bug where last torpedo(es) could fail to load • Fixed bug where game browser could incorrectly show South Pacific Campaign games as “Complete” after playing an Aleutians Campaign game
• Added visual responses to all UI elements • Language selector now shows language name instead of flag • Improved performance of Mission Results > Log viewer on very long missions • Modding: Added option to disable automatically raising periscope when diving • Fixed periscope auto-raising on dive even when not in bridge view • Fixed some sound effects breaking when audio hardware is changed •…
• Added HUD indicator for torpedo tubes that are offline due to damage • Advanced Torpedo Controls can now be opened by long-pressing or swiping up on the torpedo room switcher button • When a loaded torpedo tube goes offline, the torpedo is now unloaded and available to load into another tube • Torpedo tube loading progress is now restored when continuing a saved games • Removed tip falsely cl…
• Double-tapping the depth gauge now halts dive/ascent at current depth • Time-scale control hotkeys now work in management view • When assigning side missions, if no enemy base is available mission falls back to a type that doesn’t require a base • Depth Charges now trigger splash/notification even if sonar is offline • Fixed Fast Travel consuming no fuel if “Stop for Targets of Opportunity” i…
Announcements are the developer’s own posts to the game’s Steam news feed: updates and their patch notes, in-game events, releases and sales. The important ones are marked on the players chart.