--- /dev/null
+++ b/KerbalEngineer/Flight/Readouts/Orbital/CurrentSoi.cs
@@ -1,1 +1,52 @@
+// 
+//     Kerbal Engineer Redux
+// 
+//     Copyright (C) 2014 CYBUTEK
+// 
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as published by
+//     the Free Software Foundation, either version 3 of the License, or
+//     (at your option) any later version.
+// 
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+// 
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// 
 
+#region Using Directives
+
+using KerbalEngineer.Extensions;
+using KerbalEngineer.Flight.Sections;
+
+#endregion
+
+namespace KerbalEngineer.Flight.Readouts.Orbital
+{
+    public class CurrentSoi : ReadoutModule
+    {
+        #region Constructors
+
+        public CurrentSoi()
+        {
+            this.Name = "Current SOI";
+            this.Category = ReadoutCategory.GetCategory("Orbital");
+            this.HelpString = "Shows the SOI of the current body the vessel is orbiting.";
+            this.IsDefault = false;
+        }
+
+        #endregion
+
+        #region Methods: public
+
+        public override void Draw(SectionModule section)
+        {
+            this.DrawLine(FlightGlobals.currentMainBody.sphereOfInfluence.ToDistance(), section.IsHud);
+        }
+
+        #endregion
+    }
+}


--- a/KerbalEngineer/Flight/Readouts/ReadoutLibrary.cs
+++ b/KerbalEngineer/Flight/Readouts/ReadoutLibrary.cs
@@ -79,6 +79,7 @@
                 readouts.Add(new Eccentricity());
                 readouts.Add(new OrbitalSpeed());
                 readouts.Add(new OrbitalPeriod());
+                readouts.Add(new CurrentSoi());
                 readouts.Add(new LongitudeOfAscendingNode());
                 readouts.Add(new LongitudeOfPeriapsis());
                 readouts.Add(new ArgumentOfPeriapsis());


--- a/KerbalEngineer/KerbalEngineer.csproj
+++ b/KerbalEngineer/KerbalEngineer.csproj
@@ -61,6 +61,7 @@
     <Compile Include="Flight\Readouts\Orbital\MeanAnomaly.cs" />
     <Compile Include="Flight\Readouts\Orbital\EccentricAnomaly.cs" />
     <Compile Include="Flight\Readouts\Orbital\ArgumentOfPeriapsis.cs" />
+    <Compile Include="Flight\Readouts\Orbital\CurrentSoi.cs" />
     <Compile Include="Flight\Readouts\Orbital\TrueAnomaly.cs" />
     <Compile Include="Flight\Readouts\Orbital\TimeToEquatorialAscendingNode.cs" />
     <Compile Include="Flight\Readouts\Orbital\TimeToEquatorialDescendingNode.cs" />