diff --git a/graphs/data/fitEwarStats/getter.py b/graphs/data/fitEwarStats/getter.py
index 1aa74d172..df7b07ff6 100644
--- a/graphs/data/fitEwarStats/getter.py
+++ b/graphs/data/fitEwarStats/getter.py
@@ -332,3 +332,79 @@ class Distance2TpStrGetter(SmoothPointGetter):
         strMult = calculateMultiplier(strMults)
         strength = (strMult - 1) * 100
         return strength
+
+
+class Distance2JamChanceGetter(SmoothPointGetter):
+
+    _baseResolution = 50
+    _extraDepth = 2
+
+    ECM_ATTRS_GENERAL = ('scanGravimetricStrengthBonus', 'scanLadarStrengthBonus', 'scanMagnetometricStrengthBonus', 'scanRadarStrengthBonus')
+    ECM_ATTRS_FIGHTERS = ('fighterAbilityECMStrengthGravimetric', 'fighterAbilityECMStrengthLadar', 'fighterAbilityECMStrengthMagnetometric', 'fighterAbilityECMStrengthRadar')
+    SCAN_TYPES = ('Gravimetric', 'Ladar', 'Magnetometric', 'Radar')
+
+    def _getCommonData(self, miscParams, src, tgt):
+        resonance = 1 - (miscParams['resist'] or 0)
+        ecms = []
+        for mod in src.item.activeModulesIter():
+            for effectName in ('remoteECMFalloff', 'structureModuleEffectECM'):
+                if effectName in mod.item.effects:
+                    ecms.append((
+                        tuple(mod.getModifiedItemAttr(a) or 0 for a in self.ECM_ATTRS_GENERAL),
+                        mod.maxRange or 0, mod.falloff or 0, True, False))
+            if 'doomsdayAOEECM' in mod.item.effects:
+                ecms.append((
+                    tuple(mod.getModifiedItemAttr(a) or 0 for a in self.ECM_ATTRS_GENERAL),
+                    max(0, (mod.maxRange or 0) + mod.getModifiedItemAttr('doomsdayAOERange')),
+                    mod.falloff or 0, False, False))
+        for drone in src.item.activeDronesIter():
+            if 'entityECMFalloff' in drone.item.effects:
+                ecms.extend(drone.amountActive * ((
+                    tuple(drone.getModifiedItemAttr(a) or 0 for a in self.ECM_ATTRS_GENERAL),
+                    math.inf, 0, True, True),))
+        for fighter, ability in src.item.activeFighterAbilityIter():
+            if ability.effect.name == 'fighterAbilityECM':
+                ecms.append((
+                    tuple(fighter.getModifiedItemAttr(a) or 0 for a in self.ECM_ATTRS_FIGHTERS),
+                    math.inf, 0, True, False))
+        # Determine target's strongest sensor type if target is available
+        targetScanTypeIndex = None
+        if tgt is not None:
+            maxStr = -1
+            for i, scanType in enumerate(self.SCAN_TYPES):
+                currStr = tgt.item.ship.getModifiedItemAttr('scan%sStrength' % scanType) or 0
+                if currStr > maxStr:
+                    maxStr = currStr
+                    targetScanTypeIndex = i
+        return {'ecms': ecms, 'targetScanTypeIndex': targetScanTypeIndex}
+
+    def _calculatePoint(self, x, miscParams, src, tgt, commonData):
+        distance = x
+        inLockRange = checkLockRange(src=src, distance=distance)
+        inDroneRange = checkDroneControlRange(src=src, distance=distance)
+        jamStrengths = []
+        targetScanTypeIndex = commonData['targetScanTypeIndex']
+        for strengths, optimal, falloff, needsLock, needsDcr in commonData['ecms']:
+            if (needsLock and not inLockRange) or (needsDcr and not inDroneRange):
+                continue
+            rangeFactor = calculateRangeFactor(srcOptimalRange=optimal, srcFalloffRange=falloff, distance=distance)
+            # Use the strength matching the target's sensor type
+            if targetScanTypeIndex is not None and targetScanTypeIndex < len(strengths):
+                strength = strengths[targetScanTypeIndex]
+                effectiveStrength = strength * rangeFactor
+                if effectiveStrength > 0:
+                    jamStrengths.append(effectiveStrength)
+        if not jamStrengths:
+            return 0
+        # Get sensor strength from target
+        if tgt is None:
+            return 0
+        sensorStrength = max([tgt.item.ship.getModifiedItemAttr('scan%sStrength' % scanType)
+                             for scanType in self.SCAN_TYPES]) or 0
+        if sensorStrength <= 0:
+            return 100  # If target has no sensor strength, 100% jam chance
+        # Calculate jam chance: 1 - (1 - (ecmStrength / sensorStrength)) ^ numJammers
+        retainLockChance = 1
+        for jamStrength in jamStrengths:
+            retainLockChance *= 1 - min(1, jamStrength / sensorStrength)
+        return (1 - retainLockChance) * 100
diff --git a/graphs/data/fitEwarStats/graph.py b/graphs/data/fitEwarStats/graph.py
index d83969dd0..588ed8671 100644
--- a/graphs/data/fitEwarStats/graph.py
+++ b/graphs/data/fitEwarStats/graph.py
@@ -21,8 +21,8 @@
 import wx
 
 from graphs.data.base import FitGraph, Input, XDef, YDef
-from .getter import (Distance2DampStrLockRangeGetter, Distance2EcmStrMaxGetter, Distance2GdStrRangeGetter, Distance2NeutingStrGetter, Distance2TdStrOptimalGetter,
-                     Distance2TpStrGetter, Distance2WebbingStrGetter)
+from .getter import (Distance2DampStrLockRangeGetter, Distance2EcmStrMaxGetter, Distance2GdStrRangeGetter, Distance2JamChanceGetter, Distance2NeutingStrGetter,
+                     Distance2TdStrOptimalGetter, Distance2TpStrGetter, Distance2WebbingStrGetter)
 
 _t = wx.GetTranslation
 
@@ -31,11 +31,13 @@ class FitEwarStatsGraph(FitGraph):
     # UI stuff
     internalName = 'ewarStatsGraph'
     name = _t('Electronic Warfare Stats')
+    hasTargets = True
     xDefs = [XDef(handle='distance', unit='km', label=_t('Distance'), mainInput=('distance', 'km'))]
     yDefs = [
         YDef(handle='neutStr', unit=None, label=_t('Cap neutralized per second'), selectorLabel=_t('Neuts: cap per second')),
         YDef(handle='webStr', unit='%', label=_t('Speed reduction'), selectorLabel=_t('Webs: speed reduction')),
         YDef(handle='ecmStrMax', unit=None, label=_t('Combined ECM strength'), selectorLabel=_t('ECM: combined strength')),
+        YDef(handle='jamChance', unit='%', label=_t('Jam chance'), selectorLabel=_t('ECM: jam chance')),
         YDef(handle='dampStrLockRange', unit='%', label=_t('Lock range reduction'), selectorLabel=_t('Damps: lock range reduction')),
         YDef(handle='tdStrOptimal', unit='%', label=_t('Turret optimal range reduction'), selectorLabel=_t('TDs: turret optimal range reduction')),
         YDef(handle='gdStrRange', unit='%', label=_t('Missile flight range reduction'), selectorLabel=_t('GDs: missile flight range reduction')),
@@ -53,6 +55,7 @@ class FitEwarStatsGraph(FitGraph):
         ('distance', 'neutStr'): Distance2NeutingStrGetter,
         ('distance', 'webStr'): Distance2WebbingStrGetter,
         ('distance', 'ecmStrMax'): Distance2EcmStrMaxGetter,
+        ('distance', 'jamChance'): Distance2JamChanceGetter,
         ('distance', 'dampStrLockRange'): Distance2DampStrLockRangeGetter,
         ('distance', 'tdStrOptimal'): Distance2TdStrOptimalGetter,
         ('distance', 'gdStrRange'): Distance2GdStrRangeGetter,