HOI IV - Open Beta Update V
Open Beta Update V focuses on AI naval behavior improvements, stability fixes for large-scale naval battles, and various quality-of-life adjustments to lend-lease and supply tooltips.
Images © Hearts of Iron IV via Steam
▲Buffs4
- Naval AIThe AI will now train ships more opportunistically.
- EnglandBattleship Construction:Fixed a bug that prevented England from building improved battleships.Blocked→Enabled
- USAAircraft Carrier Construction:Fixed a bug where the USA was unable to build 1940 aircraft carriers.Blocked→Enabled
- Army AIThe AI will now train their troops more frequently, leading to better quality divisions.
✚Bug fixes4
- Supply SystemFixed a bug where ships were partially considered for supply needs, correcting logistics calculations.
- Naval AIStrike Force:Fixed a bug where strike forces would get stuck on invalid targets and cease functioning.
- ItalyRI Bolzano:RI Bolzano in the 1939 OOB now correctly uses the Bolzano Class hull.Incorrect→ship_hull_cruiser_2
- Winter WarfareFixed incorrect snow modifier values and the leader snow adjuster functionality.
◆Other changes7
- Lend LeaseLend lease now defaults to the maximum amount for 'once' and 100% for 'percentage' modes, reducing manual input.→Max/100%
- Supply SystemUpdated supply tooltip to provide more precise information on the origin of supply.
- Naval AI
- Generic taskforces and standby fleet homebase selection have been updated to be more sensible.
- Added logic to prevent the AI from over-assigning patrols to support naval invasions.
- Convoy Raider:Convoy raiders will no longer join or reinforce combat unless enemy convoys are present.
- ItalyExtensive rework of Italian naval equipment for better historical or gameplay accuracy.
- Winter WarfareSnow attack penalty is now visible on the move-arrow tooltip for better tactical planning.Hidden→Visible
subjects affected (8)
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Patch history
- HOI IV - Open Beta Summer Edition™Jul 6, 2026 · 1d+18−13→
- →Hotfix 1.19.0.1Jun 12, 2026 · 3w
- PEace For Our Time | Patch 1.18.1Apr 29, 2026 · 2mo+7→
- →Warships of the Pacific - Hotfix, 1.17.5.2Mar 26, 2026 · 3mo
- →(Very small) Hotfix - Patch 1.17.4.1Feb 25, 2026 · 4mo
- NCNS Patch 1.17.1.1Nov 27, 2025 · 7mo+2→
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