diff --git a/Barotrauma/BarotraumaClient/ClientSource/Screens/SubEditorScreen.cs b/Barotrauma/BarotraumaClient/ClientSource/Screens/SubEditorScreen.cs
index 60d3eff907..44a2e3d2cb 100644
--- a/Barotrauma/BarotraumaClient/ClientSource/Screens/SubEditorScreen.cs
+++ b/Barotrauma/BarotraumaClient/ClientSource/Screens/SubEditorScreen.cs
@@ -230,7 +230,22 @@ private static string GetSubDescription()
 
         private static LocalizedString GetTotalHullVolume()
         {
-            return $"{TextManager.Get("TotalHullVolume")}:\n{Hull.HullList.Sum(h => h.Volume)}";
+            float totalVolume = 0.0f;
+            float ballastVolume = 0.0f;
+            Hull.HullList.ForEach(h =>
+            {
+                totalVolume += h.Volume;
+
+                if (h.IsBallast())
+                {
+                    ballastVolume += h.Volume;
+                }
+            });
+
+            string retVal = $"{TextManager.Get("TotalHullVolume")}:\n{totalVolume}";
+            retVal += $" ({(ballastVolume / totalVolume * 100).ToString("0.00")} % {TextManager.Get("roomname.Ballast")})";
+
+            return retVal;
         }
 
         private static LocalizedString GetSelectedHullVolume()
diff --git a/Barotrauma/BarotraumaShared/SharedSource/Map/Hull.cs b/Barotrauma/BarotraumaShared/SharedSource/Map/Hull.cs
index 4e87e96d9c..8312bb093a 100644
--- a/Barotrauma/BarotraumaShared/SharedSource/Map/Hull.cs
+++ b/Barotrauma/BarotraumaShared/SharedSource/Map/Hull.cs
@@ -1407,6 +1407,11 @@ private void DetermineIsAirlock()
             IsAirlock = false;
         }
 
+        public bool IsBallast()
+        {
+	        return roomName != null && roomName.Contains("ballast", StringComparison.OrdinalIgnoreCase);
+        }
+
         /// <summary>
         /// Does this hull have any doors leading outside?
         /// </summary>