diff --git a/AIS/bsmd.AIS2Service/AISZoneMonitor.cs b/AIS/bsmd.AIS2Service/AISZoneMonitor.cs
index d9e2a0d8..9cd113eb 100644
--- a/AIS/bsmd.AIS2Service/AISZoneMonitor.cs
+++ b/AIS/bsmd.AIS2Service/AISZoneMonitor.cs
@@ -72,6 +72,7 @@ namespace bsmd.AIS2Service
                 {
                     if(testDict.ContainsKey(mmsi))
                     {
+                        if (!_sitRepDict.ContainsKey(mmsi)) continue;
                         AIS_Target target = _sitRepDict[mmsi];
                         foreach(AlarmAssignmentZone aazone in testDict[mmsi]) {
                             if(aazone.Zone.IsPointInPolygon4(target.Position))
diff --git a/AIS/bsmd.AIS2Service/AIS_SQLiteStorage.cs b/AIS/bsmd.AIS2Service/AIS_SQLiteStorage.cs
index 4065abbe..0efb605a 100644
--- a/AIS/bsmd.AIS2Service/AIS_SQLiteStorage.cs
+++ b/AIS/bsmd.AIS2Service/AIS_SQLiteStorage.cs
@@ -400,7 +400,7 @@ namespace bsmd.AIS2Service
             string loadSLRString = "SELECT a.timestamp_first, a.timestamp_last, za.mmsi, mz.id FROM alarm a " +
                 "INNER JOIN zone_assignment za ON a.zone_assignment_id = za.id " +
                 "INNER JOIN monitor_zone mz ON za.monitor_zone_id = mz.id " +                
-                $"WHERE mz.monitor_group_id = {groupId}";
+                $"WHERE mz.monitor_group_id = {groupId} ORDER BY mz.sequence";
 
             SQLiteCommand laCmd = new SQLiteCommand(loadSLRString, _connection);
             SQLiteDataReader reader = laCmd.ExecuteReader();
diff --git a/AIS/bsmd.AIS2Service/App.config b/AIS/bsmd.AIS2Service/App.config
index 01211684..da7c04e3 100644
--- a/AIS/bsmd.AIS2Service/App.config
+++ b/AIS/bsmd.AIS2Service/App.config
@@ -70,6 +70,9 @@
             <setting name="MinAlarmIntervalMins" serializeAs="String">
                 <value>60</value>
             </setting>
+            <setting name="AutoAlarmExpiryHours" serializeAs="String">
+                <value>24</value>
+            </setting>
         </bsmd.AIS2Service.Properties.Settings>
     </applicationSettings>
   <runtime>
diff --git a/AIS/bsmd.AIS2Service/Properties/Settings.Designer.cs b/AIS/bsmd.AIS2Service/Properties/Settings.Designer.cs
index 8ea7f200..a5128f39 100644
--- a/AIS/bsmd.AIS2Service/Properties/Settings.Designer.cs
+++ b/AIS/bsmd.AIS2Service/Properties/Settings.Designer.cs
@@ -12,7 +12,7 @@ namespace bsmd.AIS2Service.Properties {
     
     
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "17.2.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "17.4.0.0")]
     internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
         
         private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
@@ -130,5 +130,14 @@ namespace bsmd.AIS2Service.Properties {
                 return ((int)(this["MinAlarmIntervalMins"]));
             }
         }
+        
+        [global::System.Configuration.ApplicationScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("24")]
+        public int AutoAlarmExpiryHours {
+            get {
+                return ((int)(this["AutoAlarmExpiryHours"]));
+            }
+        }
     }
 }
diff --git a/AIS/bsmd.AIS2Service/Properties/Settings.settings b/AIS/bsmd.AIS2Service/Properties/Settings.settings
index 33f3e9aa..3f43ac8f 100644
--- a/AIS/bsmd.AIS2Service/Properties/Settings.settings
+++ b/AIS/bsmd.AIS2Service/Properties/Settings.settings
@@ -38,5 +38,8 @@
     <Setting Name="MinAlarmIntervalMins" Type="System.Int32" Scope="Application">
       <Value Profile="(Default)">60</Value>
     </Setting>
+    <Setting Name="AutoAlarmExpiryHours" Type="System.Int32" Scope="Application">
+      <Value Profile="(Default)">24</Value>
+    </Setting>
   </Settings>
 </SettingsFile>
\ No newline at end of file
diff --git a/AIS/bsmd.AIS2Service/img/arrow_down_red.png b/AIS/bsmd.AIS2Service/img/arrow_down_red.png
new file mode 100644
index 00000000..a76e2f2a
Binary files /dev/null and b/AIS/bsmd.AIS2Service/img/arrow_down_red.png differ
diff --git a/AIS/bsmd.AIS2Service/img/arrow_up_green.png b/AIS/bsmd.AIS2Service/img/arrow_up_green.png
new file mode 100644
index 00000000..a0532067
Binary files /dev/null and b/AIS/bsmd.AIS2Service/img/arrow_up_green.png differ
diff --git a/AIS/bsmd.AIS2Service/img/bullet_square_yellow.png b/AIS/bsmd.AIS2Service/img/bullet_square_yellow.png
new file mode 100644
index 00000000..19623882
Binary files /dev/null and b/AIS/bsmd.AIS2Service/img/bullet_square_yellow.png differ
diff --git a/AIS/bsmd.AIS2Service/img/clock.png b/AIS/bsmd.AIS2Service/img/clock.png
new file mode 100644
index 00000000..84f277fd
Binary files /dev/null and b/AIS/bsmd.AIS2Service/img/clock.png differ
diff --git a/AIS/bsmd.AIS2Service/webservice/SLRController.cs b/AIS/bsmd.AIS2Service/webservice/SLRController.cs
index 7c26b1ab..30d339a3 100644
--- a/AIS/bsmd.AIS2Service/webservice/SLRController.cs
+++ b/AIS/bsmd.AIS2Service/webservice/SLRController.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Web.Http;
 
 namespace bsmd.AIS2Service
@@ -11,7 +12,10 @@ namespace bsmd.AIS2Service
             if (!id.HasValue) return null;
             List<ShipLocationReport> result = AISManager.SQLiteStorage.GetShipLocationReports(id.Value);
 
+            Dictionary<int, List<ShipLocationReport>> mmsiDict = new Dictionary<int, List<ShipLocationReport>>();
             foreach(ShipLocationReport report in result) {
+                if (!mmsiDict.ContainsKey(report.MMSI)) mmsiDict[report.MMSI] = new List<ShipLocationReport>();
+                mmsiDict[report.MMSI].Add(report);
                 if (AISManager.SitRep.ContainsKey(report.MMSI))
                 {
                     report.Destination = AISManager.SitRep[report.MMSI].Destination;
@@ -21,6 +25,51 @@ namespace bsmd.AIS2Service
                 }            
             }
 
+            // determine "state" of vessel through alarm comparison. Possible values are:
+            // 0 = stationary (= equals)
+            // 1 = incoming
+            // 2 = outgoing
+            // 3 = expired
+
+            foreach(int key in mmsiDict.Keys)
+            {
+                bool expired = true;
+                DateTime? lastDate= null;
+                bool? incoming = null;
+
+                // first run through alarm list to determine state
+                foreach(ShipLocationReport slr in mmsiDict[key])
+                {
+                    if((DateTime.Now - slr.Timestamp_Last).TotalHours < Properties.Settings.Default.AutoAlarmExpiryHours)  expired = false;
+                    if (lastDate == null)
+                    {
+                        lastDate = slr.Timestamp_Last;
+                    }
+                    else
+                    {
+                        incoming = slr.Timestamp_Last < lastDate;
+                    }
+                }
+
+                // second run through alarm list to set state flag in all entries
+                foreach (ShipLocationReport slr in mmsiDict[key])
+                {
+                    if (expired)
+                    {
+                        slr.VoyageDirection = 3;
+                    }
+                    else if (incoming.HasValue)
+                    {
+                        if (incoming.Value) { slr.VoyageDirection = 1; }
+                        else { slr.VoyageDirection = 2; }
+                    }
+                    else
+                    {
+                        slr.VoyageDirection = 0; // stationary / no comparison value
+                    }
+                }
+            }
+
             return result;
         }
     }
diff --git a/AIS/bsmd.AIS2Service/webservice/ShipLocationReport.cs b/AIS/bsmd.AIS2Service/webservice/ShipLocationReport.cs
index 25d813f6..ac33e176 100644
--- a/AIS/bsmd.AIS2Service/webservice/ShipLocationReport.cs
+++ b/AIS/bsmd.AIS2Service/webservice/ShipLocationReport.cs
@@ -23,5 +23,6 @@ namespace bsmd.AIS2Service
 
         public string NavStatus { get; set; }
 
+        public int VoyageDirection { get; set; }
     }
 }
diff --git a/AIS/bsmd.AIS2Service/zonen.js b/AIS/bsmd.AIS2Service/zonen.js
index af32799e..9d3cb0b3 100644
--- a/AIS/bsmd.AIS2Service/zonen.js
+++ b/AIS/bsmd.AIS2Service/zonen.js
@@ -62,7 +62,10 @@ function updateData(data, groupId) {
 
         const colCount = row.childNodes.length;
         row.childNodes[0].innerHTML = data[i].Name;
-        // TODO: incoming/outgoing symbol
+        if(data[i].VoyageDirection == 0) row.childNodes[1].innerHTML = '<img src="img/bullet_square_yellow.png" />';
+        if(data[i].VoyageDirection == 1) row.childNodes[1].innerHTML = '<img src="img/arrow_down_red.png" />';
+        if(data[i].VoyageDirection == 2) row.childNodes[1].innerHTML = '<img src="img/arrow_up_green.png" />';
+        if(data[i].VoyageDirection == 3) row.childNodes[1].innerHTML = '<img src="img/clock.png" />';
         row.childNodes[2].innerHTML = data[i].IMO;
 
         // find alarm cell and set value