diff --git a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/MultipleClassesInEventTest.java b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/MultipleClassesInEventTest.java
index 1f07eeeb332..bf2a28428b4 100755
--- a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/MultipleClassesInEventTest.java
+++ b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/MultipleClassesInEventTest.java
@@ -49,25 +49,25 @@ public class MultipleClassesInEventTest {
                         new URL(
                                 httpAndHost+"/events/event_20110505_SailingTea/clientparams.php?event=event_20110505_SailingTea&race=cce678c8-97e6-11e0-9aed-406186cbf87c"),
                         new URI(liveURI), new URI(storedURI),
-                        EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
+                        /* startOfTracking */ null, /* endOfTracking */ null, EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
         kiwotest2 = domainFactory
                 .createRaceTracker(
                         new URL(
                                 httpAndHost+"/events/event_20110505_SailingTea/clientparams.php?event=event_20110505_SailingTea&race=11290bd6-97e7-11e0-9aed-406186cbf87c"),
                         new URI(liveURI), new URI(storedURI),
-                        EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
+                        /* startOfTracking */ null, /* endOfTracking */ null, EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
         kiwotest3 = domainFactory
                 .createRaceTracker(
                         new URL(
                                 httpAndHost+"/events/event_20110505_SailingTea/clientparams.php?event=event_20110505_SailingTea&race=39635b24-97e7-11e0-9aed-406186cbf87c"),
                         new URI(liveURI), new URI(storedURI),
-                        EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
+                        /* startOfTracking */ null, /* endOfTracking */ null, EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
         weym470may112014_2 = domainFactory
                 .createRaceTracker(
                         new URL(
                                 httpAndHost+"/events/event_20110505_SailingTea/clientparams.php?event=event_20110505_SailingTea&race=04498426-7dfd-11e0-8236-406186cbf87c"),
                         new URI(liveURI), new URI(storedURI),
-                        EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
+                        /* startOfTracking */ null, /* endOfTracking */ null, EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
         
         assertEquals("STG", kiwotest1.getEvent().getBoatClass().getName());
         assertEquals("505", kiwotest2.getEvent().getBoatClass().getName());
diff --git a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/OnlineTracTracBasedTest.java b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/OnlineTracTracBasedTest.java
index 677cebeb860..60cf9d4b98f 100755
--- a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/OnlineTracTracBasedTest.java
+++ b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/OnlineTracTracBasedTest.java
@@ -90,7 +90,7 @@ public abstract class OnlineTracTracBasedTest extends AbstractTracTracLiveTest {
         setStoredDataLoaded(false);
         ArrayList<Receiver> receivers = new ArrayList<Receiver>();
         for (Receiver r : domainFactory.getUpdateReceivers(trackedEvent, getEvent(), EmptyWindStore.INSTANCE,
-                new DynamicRaceDefinitionSet() {
+                /* startOfTracking */ null, /* endOfTracking */ null, new DynamicRaceDefinitionSet() {
                     @Override
                     public void addRaceDefinition(RaceDefinition race) {
                     }
diff --git a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/ReceiveMarkPassingDataTest.java b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/ReceiveMarkPassingDataTest.java
index a8eec2d351d..12d36808624 100755
--- a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/ReceiveMarkPassingDataTest.java
+++ b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/ReceiveMarkPassingDataTest.java
@@ -94,11 +94,11 @@ public class ReceiveMarkPassingDataTest extends AbstractTracTracLiveTest {
         receivers.add(receiver);
         for (Receiver r : DomainFactory.INSTANCE.getUpdateReceivers(
                 new DynamicTrackedEventImpl(DomainFactory.INSTANCE.getOrCreateEvent(getEvent())),
-                getEvent(), EmptyWindStore.INSTANCE, new DynamicRaceDefinitionSet() {
+                getEvent(), EmptyWindStore.INSTANCE, /* startOfTracking */ null, /* endOfTracking */ null,
+                new DynamicRaceDefinitionSet() {
                     @Override
                     public void addRaceDefinition(RaceDefinition race) {}
-                }, ReceiverType.RACECOURSE,
-                ReceiverType.MARKPOSITIONS, ReceiverType.RACESTARTFINISH, ReceiverType.RAWPOSITIONS)) {
+                }, ReceiverType.RACECOURSE, ReceiverType.MARKPOSITIONS, ReceiverType.RACESTARTFINISH, ReceiverType.RAWPOSITIONS)) {
             receivers.add(r);
         }
         addListenersForStoredDataAndStartController(receivers);
diff --git a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/ReceiveTrackingDataTest.java b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/ReceiveTrackingDataTest.java
index 1ac525d3ac8..0caff97a8af 100755
--- a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/ReceiveTrackingDataTest.java
+++ b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/ReceiveTrackingDataTest.java
@@ -76,8 +76,8 @@ public class ReceiveTrackingDataTest extends AbstractTracTracLiveTest {
             public void raceRemoved(TrackedRace trackedRace) {
             }
         });
-        for (Receiver receiver : domainFactory.getUpdateReceivers(trackedEvent, getEvent(), EmptyWindStore.INSTANCE,
-                new DynamicRaceDefinitionSet() {
+        for (Receiver receiver : domainFactory.getUpdateReceivers(trackedEvent, getEvent(), /* start of tracking */ null,
+                /* end of tracking */ null, EmptyWindStore.INSTANCE, new DynamicRaceDefinitionSet() {
                     @Override
                     public void addRaceDefinition(RaceDefinition race) {
                     }
@@ -87,7 +87,7 @@ public class ReceiveTrackingDataTest extends AbstractTracTracLiveTest {
             }
         }
         addListenersForStoredDataAndStartController(domainFactory.getUpdateReceivers(trackedEvent, getEvent(),
-                EmptyWindStore.INSTANCE, new DynamicRaceDefinitionSet() {
+                /* start of tracking */ null, /* end of tracking */ null, EmptyWindStore.INSTANCE, new DynamicRaceDefinitionSet() {
                     @Override
                     public void addRaceDefinition(RaceDefinition race) {
                     }
diff --git a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/UnicodeCharactersInCompetitorNamesTest.java b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/UnicodeCharactersInCompetitorNamesTest.java
index 94df1cf5b24..0cbe8182f01 100755
--- a/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/UnicodeCharactersInCompetitorNamesTest.java
+++ b/java/com.sap.sailing.domain.test/src/com/sap/sailing/domain/test/UnicodeCharactersInCompetitorNamesTest.java
@@ -45,7 +45,7 @@ public class UnicodeCharactersInCompetitorNamesTest {
                                 "http://" + TracTracConnectionConstants.HOST_NAME + "/events/event_20110609_KielerWoch/clientparams.php?event=event_20110609_KielerWoch&race=5b08a9ee-9933-11e0-85be-406186cbf87c"),
                                 tractracTunnel ? new URI("tcp://"+tractracTunnelHost+":"+TracTracConnectionConstants.PORT_TUNNEL_LIVE) : new URI("tcp://" + TracTracConnectionConstants.HOST_NAME + ":" + TracTracConnectionConstants.PORT_LIVE),
                                         tractracTunnel ? new URI("tcp://"+tractracTunnelHost+":"+TracTracConnectionConstants.PORT_TUNNEL_STORED) : new URI("tcp://" + TracTracConnectionConstants.HOST_NAME + ":" + TracTracConnectionConstants.PORT_STORED),
-                        EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
+                        /* startOfTracking */ null, /* endOfTracking */ null, EmptyWindStore.INSTANCE, new DummyTrackedEventRegistry());
         
         Iterable<Competitor> competitors = fourtyninerYellow_2.getRacesHandle().getRaces().iterator().next().getCompetitors();
         for (Competitor competitor : competitors) {
diff --git a/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/DomainFactory.java b/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/DomainFactory.java
index 4eb88745e0b..271fbd63102 100755
--- a/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/DomainFactory.java
+++ b/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/DomainFactory.java
@@ -100,17 +100,26 @@ public interface DomainFactory {
      * 
      * The link to the {@link RaceDefinition} is created in the {@link DomainFactory} when the
      * {@link RaceCourseReceiver} creates the {@link TrackedRace} object. Starting then, the {@link DomainFactory} will
-     * respond with the {@link RaceDefinition} when its {@link DomainFactory#getRaces(Event)} is called with the TracTrac
-     * {@link Event} as argument that is used for its tracking.
+     * respond with the {@link RaceDefinition} when its {@link DomainFactory#getRaces(Event)} is called with the
+     * TracTrac {@link Event} as argument that is used for its tracking.
      * <p>
+     * 
+     * @param startOfTracking
+     *            if <code>null</code>, all stored data from the "beginning of time" will be loaded that the event has
+     *            to provide, particularly for the mark positions which are stored per event, not per race; otherwise,
+     *            particularly the mark position loading will be constrained to this start time.
+     * @param endOfTracking
+     *            if <code>null</code>, all stored data until the "end of time" will be loaded that the event has
+     *            to provide, particularly for the mark positions which are stored per event, not per race; otherwise,
+     *            particularly the mark position loading will be constrained to this end time.
      * @param windStore
      *            Provides the capability to obtain the {@link WindTrack}s for the different wind sources. A trivial
      *            implementation is {@link EmptyWindStore} which simply provides new, empty tracks. This is always
      *            available but loses track of the wind, e.g., during server restarts.
-     * @param trackedEventRegistry TODO
      */
-    TracTracRaceTracker createRaceTracker(URL paramURL, URI liveURI, URI storedURI, WindStore windStore, TrackedEventRegistry trackedEventRegistry) throws MalformedURLException,
-            FileNotFoundException, URISyntaxException;
+    TracTracRaceTracker createRaceTracker(URL paramURL, URI liveURI, URI storedURI, TimePoint startOfTracking,
+            TimePoint endOfTracking, WindStore windStore, TrackedEventRegistry trackedEventRegistry)
+            throws MalformedURLException, FileNotFoundException, URISyntaxException;
 
     BoatClass getOrCreateBoatClass(CompetitorClass competitorClass);
 
@@ -125,12 +134,20 @@ public interface DomainFactory {
      *            must have been created before through
      *            {@link #getOrCreateTrackedEvent(com.sap.sailing.domain.base.Event)} because otherwise the link to the
      *            {@link Event} can't be established
+     * @param startOfTracking
+     *            if <code>null</code>, all stored data from the "beginning of time" will be loaded that the event has
+     *            to provide, particularly for the mark positions which are stored per event, not per race; otherwise,
+     *            particularly the mark position loading will be constrained to this start time.
+     * @param endOfTracking
+     *            if <code>null</code>, all stored data until the "end of time" will be loaded that the event has to
+     *            provide, particularly for the mark positions which are stored per event, not per race; otherwise,
+     *            particularly the mark position loading will be constrained to this end time.
      * @param tokenToRetrieveAssociatedRace
      *            used to update the set of{@link RaceDefinition}s received by the
      *            {@link RaceCourseReceiver} created by this call
      */
-    Iterable<Receiver> getUpdateReceivers(DynamicTrackedEvent trackedEvent, Event tractracEvent, WindStore windStore,
-            DynamicRaceDefinitionSet raceDefinitionSetToUpdate);
+    Iterable<Receiver> getUpdateReceivers(DynamicTrackedEvent trackedEvent, Event tractracEvent, TimePoint startOfTracking,
+            TimePoint endOfTracking, WindStore windStore, DynamicRaceDefinitionSet raceDefinitionSetToUpdate);
 
     /**
      * Creates a {@link RaceDefinition} from a TracTrac {@link Race} and a domain {@link Course} definition. The
@@ -165,7 +182,7 @@ public interface DomainFactory {
     MarkPassing createMarkPassing(TimePoint timePoint, Waypoint passed, com.sap.sailing.domain.base.Competitor competitor);
 
     Iterable<Receiver> getUpdateReceivers(DynamicTrackedEvent trackedEvent, Event tractracEvent, WindStore windStore,
-            DynamicRaceDefinitionSet raceDefinitionSetToUpdate, ReceiverType... types);
+            TimePoint startOfTracking, TimePoint endOfTracking, DynamicRaceDefinitionSet raceDefinitionSetToUpdate, ReceiverType... types);
 
     DynamicTrackedRace trackRace(DynamicTrackedEvent trackedEvent, RaceDefinition raceDefinition, WindStore windStore,
             long millisecondsOverWhichToAverageWind, long millisecondsOverWhichToAverageSpeed,
diff --git a/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/DomainFactoryImpl.java b/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/DomainFactoryImpl.java
index 28671d108b7..0e5ef96b4a4 100644
--- a/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/DomainFactoryImpl.java
+++ b/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/DomainFactoryImpl.java
@@ -269,8 +269,9 @@ public class DomainFactoryImpl implements DomainFactory {
     }
     
     @Override
-    public Iterable<Receiver> getUpdateReceivers(DynamicTrackedEvent trackedEvent, com.tractrac.clientmodule.Event tractracEvent,
-            WindStore windStore, DynamicRaceDefinitionSet raceDefinitionSetToUpdate, ReceiverType... types) {
+    public Iterable<Receiver> getUpdateReceivers(DynamicTrackedEvent trackedEvent,
+            com.tractrac.clientmodule.Event tractracEvent, WindStore windStore, TimePoint startOfTracking,
+            TimePoint endOfTracking, DynamicRaceDefinitionSet raceDefinitionSetToUpdate, ReceiverType... types) {
         Collection<Receiver> result = new ArrayList<Receiver>();
         for (ReceiverType type : types) {
             switch (type) {
@@ -281,7 +282,7 @@ public class DomainFactoryImpl implements DomainFactory {
                 break;
             case MARKPOSITIONS:
                 result.add(new MarkPositionReceiver(
-                        trackedEvent, tractracEvent, this));
+                        trackedEvent, tractracEvent, startOfTracking, endOfTracking, this));
                 break;
             case RAWPOSITIONS:
                 result.add(new RawPositionReceiver(
@@ -302,10 +303,10 @@ public class DomainFactoryImpl implements DomainFactory {
 
     @Override
     public Iterable<Receiver> getUpdateReceivers(DynamicTrackedEvent trackedEvent,
-            com.tractrac.clientmodule.Event tractracEvent, WindStore windStore, DynamicRaceDefinitionSet raceDefinitionSetToUpdate) {
-        return getUpdateReceivers(trackedEvent, tractracEvent, windStore, raceDefinitionSetToUpdate, ReceiverType.RACECOURSE,
-                ReceiverType.MARKPASSINGS, ReceiverType.MARKPOSITIONS, ReceiverType.RACESTARTFINISH,
-                ReceiverType.RAWPOSITIONS);
+            com.tractrac.clientmodule.Event tractracEvent, TimePoint startOfTracking, TimePoint endOfTracking, WindStore windStore, DynamicRaceDefinitionSet raceDefinitionSetToUpdate) {
+        return getUpdateReceivers(trackedEvent, tractracEvent, windStore, startOfTracking, endOfTracking,
+                raceDefinitionSetToUpdate, ReceiverType.RACECOURSE, ReceiverType.MARKPASSINGS,
+                ReceiverType.MARKPOSITIONS, ReceiverType.RACESTARTFINISH, ReceiverType.RAWPOSITIONS);
     }
     
     @Override
@@ -450,10 +451,11 @@ public class DomainFactoryImpl implements DomainFactory {
     }
 
     @Override
-    public TracTracRaceTracker createRaceTracker(URL paramURL, URI liveURI, URI storedURI, WindStore windStore,
-            TrackedEventRegistry trackedEventRegistry) throws MalformedURLException, FileNotFoundException,
-            URISyntaxException {
-        return new TracTracRaceTrackerImpl(this, paramURL, liveURI, storedURI, windStore, trackedEventRegistry);
+    public TracTracRaceTracker createRaceTracker(URL paramURL, URI liveURI, URI storedURI, TimePoint startOfTracking,
+            TimePoint endOfTracking, WindStore windStore, TrackedEventRegistry trackedEventRegistry)
+            throws MalformedURLException, FileNotFoundException, URISyntaxException {
+        return new TracTracRaceTrackerImpl(this, paramURL, liveURI, storedURI, startOfTracking, endOfTracking,
+                windStore, trackedEventRegistry);
     }
 
     @Override
diff --git a/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/MarkPositionReceiver.java b/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/MarkPositionReceiver.java
index b59a3cc5167..32939b9dbb7 100755
--- a/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/MarkPositionReceiver.java
+++ b/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/MarkPositionReceiver.java
@@ -9,6 +9,7 @@ import com.sap.sailing.domain.base.Buoy;
 import com.sap.sailing.domain.base.Course;
 import com.sap.sailing.domain.base.Event;
 import com.sap.sailing.domain.base.RaceDefinition;
+import com.sap.sailing.domain.common.TimePoint;
 import com.sap.sailing.domain.common.impl.Util.Triple;
 import com.sap.sailing.domain.tracking.DynamicGPSFixTrack;
 import com.sap.sailing.domain.tracking.DynamicTrackedEvent;
@@ -42,9 +43,36 @@ public class MarkPositionReceiver extends AbstractReceiverWithQueue<ControlPoint
     private static final Logger logger = Logger.getLogger(MarkPositionReceiver.class.getName());
     
     private int received;
-    
-    public MarkPositionReceiver(final DynamicTrackedEvent trackedEvent, com.tractrac.clientmodule.Event tractracEvent, final DomainFactory domainFactory) {
+
+    /**
+     * if <code>null</code>, all stored data from the "beginning of time" will be loaded that the event has to provide,
+     * particularly for the mark positions which are stored per event, not per race; otherwise, particularly the mark
+     * position loading will be constrained to this start time.
+     */
+    private final TimePoint startOfTracking;
+
+    /**
+     * if <code>null</code>, all stored data until the "end of time" will be loaded that the event has to provide,
+     * particularly for the mark positions which are stored per event, not per race; otherwise, particularly the mark
+     * position loading will be constrained to this end time.
+     */
+    private final TimePoint endOfTracking;
+
+    /**
+     * @param startOfTracking
+     *            if <code>null</code>, all stored data from the "beginning of time" will be loaded that the event has
+     *            to provide, particularly for the mark positions which are stored per event, not per race; otherwise,
+     *            particularly the mark position loading will be constrained to this start time.
+     * @param endOfTracking
+     *            if <code>null</code>, all stored data until the "end of time" will be loaded that the event has to
+     *            provide, particularly for the mark positions which are stored per event, not per race; otherwise,
+     *            particularly the mark position loading will be constrained to this end time.
+     */
+    public MarkPositionReceiver(final DynamicTrackedEvent trackedEvent, com.tractrac.clientmodule.Event tractracEvent,
+            TimePoint startOfTracking, TimePoint endOfTracking, final DomainFactory domainFactory) {
         super(domainFactory, tractracEvent, trackedEvent);
+        this.startOfTracking = startOfTracking;
+        this.endOfTracking = endOfTracking;
         // assumption: there is currently only one race per TracTrac Event object
         if (tractracEvent.getRaceList().isEmpty()) {
             throw new IllegalArgumentException("Can't receive mark positions from event "+tractracEvent.getName()+" that has no race");
@@ -66,7 +94,8 @@ public class MarkPositionReceiver extends AbstractReceiverWithQueue<ControlPoint
                     public void gotData(ControlPoint controlPoint, ControlPointPositionData record, boolean isLiveData) {
                         enqueue(new Triple<ControlPoint, ControlPointPositionData, Boolean>(controlPoint, record, isLiveData));
                     }
-                }, /* fromTime */0l, /* toTime */Long.MAX_VALUE);
+                }, /* fromTime */ startOfTracking == null ? 0l : startOfTracking.asMillis(),
+                   /* toTime */ endOfTracking == null ? Long.MAX_VALUE : endOfTracking.asMillis());
         result.add(controlPointListener);
         setAndStartThread(new Thread(this, getClass().getName()));
         return result;
diff --git a/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/TracTracRaceTrackerImpl.java b/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/TracTracRaceTrackerImpl.java
index 09cb9ae7b42..60409483e1f 100755
--- a/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/TracTracRaceTrackerImpl.java
+++ b/java/com.sap.sailing.domain.tractracadapter/src/com/sap/sailing/domain/tractracadapter/impl/TracTracRaceTrackerImpl.java
@@ -20,6 +20,7 @@ import com.sap.sailing.domain.base.Buoy;
 import com.sap.sailing.domain.base.Course;
 import com.sap.sailing.domain.base.RaceDefinition;
 import com.sap.sailing.domain.base.impl.MillisecondsTimePoint;
+import com.sap.sailing.domain.common.TimePoint;
 import com.sap.sailing.domain.common.impl.DegreePosition;
 import com.sap.sailing.domain.common.impl.Util.Triple;
 import com.sap.sailing.domain.tracking.AbstractRaceTrackerImpl;
@@ -75,26 +76,37 @@ public class TracTracRaceTrackerImpl extends AbstractRaceTrackerImpl implements
      * <p>
      * 
      * A race tracker uses the <code>paramURL</code> for the TracTrac Java client to register for push data about one
-     * race. The {@link DomainFactory} is asked to retrieve an existing or create a new {@link com.sap.sailing.domain.base.Event}
-     * based on the TracTrac event. The {@link RaceDefinition} for the race, however, isn't created until the {@link Course} has been
-     * received. Therefore, the {@link RaceCourseReceiver} will create the {@link RaceDefinition} and will add it to the
-     * {@link com.sap.sailing.domain.base.Event}.
+     * race. The {@link DomainFactory} is asked to retrieve an existing or create a new
+     * {@link com.sap.sailing.domain.base.Event} based on the TracTrac event. The {@link RaceDefinition} for the race,
+     * however, isn't created until the {@link Course} has been received. Therefore, the {@link RaceCourseReceiver} will
+     * create the {@link RaceDefinition} and will add it to the {@link com.sap.sailing.domain.base.Event}.
      * <p>
      * 
      * The link to the {@link RaceDefinition} is created in the {@link DomainFactory} when the
      * {@link RaceCourseReceiver} creates the {@link TrackedRace} object. Starting then, the {@link DomainFactory} will
-     * respond with the {@link RaceDefinition} when its {@link DomainFactory#getRaces(Event)} is called with the TracTrac
-     * {@link Event} as argument that is used for its tracking.
+     * respond with the {@link RaceDefinition} when its {@link DomainFactory#getRaces(Event)} is called with the
+     * TracTrac {@link Event} as argument that is used for its tracking.
      * <p>
+     * 
+     * @param startOfTracking
+     *            if <code>null</code>, all stored data from the "beginning of time" will be loaded that the event has
+     *            to provide, particularly for the mark positions which are stored per event, not per race; otherwise,
+     *            particularly the mark position loading will be constrained to this start time.
+     * @param endOfTracking
+     *            if <code>null</code>, all stored data until the "end of time" will be loaded that the event has to
+     *            provide, particularly for the mark positions which are stored per event, not per race; otherwise,
+     *            particularly the mark position loading will be constrained to this end time.
      * @param windStore
      *            Provides the capability to obtain the {@link WindTrack}s for the different wind sources. A trivial
      *            implementation is {@link EmptyWindStore} which simply provides new, empty tracks. This is always
      *            available but loses track of the wind, e.g., during server restarts.
-     * @param trackedEventRegistry used to create the {@link TrackedEvent} for the domain event
+     * @param trackedEventRegistry
+     *            used to create the {@link TrackedEvent} for the domain event
      */
     protected TracTracRaceTrackerImpl(DomainFactory domainFactory, URL paramURL, URI liveURI, URI storedURI,
-            WindStore windStore, TrackedEventRegistry trackedEventRegistry) throws URISyntaxException,
-            MalformedURLException, FileNotFoundException {
+            TimePoint startOfTracking, TimePoint endOfTracking, WindStore windStore,
+            TrackedEventRegistry trackedEventRegistry) throws URISyntaxException, MalformedURLException,
+            FileNotFoundException {
         super();
         urls = new Triple<URL, URI, URI>(paramURL, liveURI, storedURI);
         this.races = new HashSet<RaceDefinition>();
@@ -123,7 +135,8 @@ public class TracTracRaceTrackerImpl extends AbstractRaceTrackerImpl implements
         setTrackedEvent(trackedEventRegistry.getOrCreateTrackedEvent(domainEvent));
         receivers = new HashSet<Receiver>();
         Set<TypeController> typeControllers = new HashSet<TypeController>();
-        for (Receiver receiver : domainFactory.getUpdateReceivers(getTrackedEvent(), tractracEvent, windStore, this)) {
+        for (Receiver receiver : domainFactory.getUpdateReceivers(getTrackedEvent(), tractracEvent, startOfTracking,
+                endOfTracking, windStore, this)) {
             receivers.add(receiver);
             for (TypeController typeController : receiver.getTypeControllersAndStart()) {
                 typeControllers.add(typeController);
diff --git a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/TrackedRace.java b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/TrackedRace.java
index 53eaac92452..da64b95ad1e 100755
--- a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/TrackedRace.java
+++ b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/TrackedRace.java
@@ -315,5 +315,12 @@ public interface TrackedRace {
 
     Distance getWindwardDistanceToOverallLeader(Competitor competitor, TimePoint timePoint) throws NoWindException;
 
-    WindWithConfidence<Pair<Position, TimePoint>> getWindWithConfidence(Position p, TimePoint at, Iterable<WindSource> windSourcesToExclude);
+    /**
+     * Loops over this tracked race's wind sources and from each asks its averaged wind for the position <code>p</code>
+     * and time point <code>at</code>, using the particular wind source's averaging interval. The confidences delivered
+     * by each wind source are used during computing the averaged result across the wind sources. The result has the averaged
+     * confidence attached.
+     */
+    WindWithConfidence<Pair<Position, TimePoint>> getWindWithConfidence(Position p, TimePoint at,
+            Iterable<WindSource> windSourcesToExclude);
 }
diff --git a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/CombinedWindTrackImpl.java b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/CombinedWindTrackImpl.java
index f599ce4b983..58bc5ed4915 100755
--- a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/CombinedWindTrackImpl.java
+++ b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/CombinedWindTrackImpl.java
@@ -1,14 +1,12 @@
 package com.sap.sailing.domain.tracking.impl;
 
-import java.util.NavigableSet;
-
 import com.sap.sailing.domain.tracking.TrackedRace;
-import com.sap.sailing.domain.tracking.Wind;
+import com.sap.sailing.domain.tracking.impl.TrackBasedEstimationWindTrackImpl.EstimatedWindFixesAsNavigableSet;
 
 /**
  * A wind track that delivers the result of
  * {@link TrackedRace#getWind(com.sap.sailing.domain.common.Position, com.sap.sailing.domain.common.TimePoint)},
- * using a {@link CombinedWindAsNavigableSet} as its internal raw fixes collection.
+ * using a {@link CombinedWindAsNavigableSet} as its internal raw fixes collection. Resolution of raw fixes is set to 10s.
  * 
  * @author Axel Uhl (d043530)
  * 
@@ -16,13 +14,25 @@ import com.sap.sailing.domain.tracking.Wind;
 public class CombinedWindTrackImpl extends VirtualWindTrackImpl {
     private CombinedWindAsNavigableSet virtualInternalRawFixes;
     
-    public CombinedWindTrackImpl(TrackedRace trackedRace, long millisecondsOverWhichToAverage) {
-        super(trackedRace, millisecondsOverWhichToAverage);
-        virtualInternalRawFixes = new CombinedWindAsNavigableSet(this, trackedRace, /* resolutionInMilliseconds */ 1000l);
+    public CombinedWindTrackImpl(TrackedRace trackedRace) {
+        super(trackedRace, /* millisecondsOverWhichToAverage not used, see overridden method */ -1);
+        virtualInternalRawFixes = new CombinedWindAsNavigableSet(this, trackedRace, /* resolutionInMilliseconds */ 10000l);
     }
 
     @Override
-    protected NavigableSet<Wind> getInternalRawFixes() {
+    protected CombinedWindAsNavigableSet getInternalRawFixes() {
         return virtualInternalRawFixes;
     }
+
+    /**
+     * The combined wind source already averages the wind from each wind source considered. There is no use in again
+     * averaging over a longer period of time. Therefore, we set the averaging interval to two times the resolution of
+     * the {@link EstimatedWindFixesAsNavigableSet virtual fixes collection} plus two milliseconds, so that at most one
+     * fix before and one fix after the time point requested will be used.
+     */
+    @Override
+    public long getMillisecondsOverWhichToAverageWind() {
+        return 2*getInternalRawFixes().getResolutionInMilliseconds()+2;
+    }
+    
 }
diff --git a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/GPSFixTrackImpl.java b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/GPSFixTrackImpl.java
index 4f316885cb5..3336ec589b4 100755
--- a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/GPSFixTrackImpl.java
+++ b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/GPSFixTrackImpl.java
@@ -134,9 +134,9 @@ public class GPSFixTrackImpl<ItemType, FixType extends GPSFix> extends TrackImpl
     }
 
     private Pair<FixType, FixType> getFixesForPositionEstimation(TimePoint timePoint, boolean inclusive) {
-        FixType lastFix = inclusive ? getLastFixAtOrBefore(timePoint) : getLastFixBefore(timePoint);
-        FixType firstFix = inclusive ? getFirstFixAtOrAfter(timePoint) : getFirstFixAfter(timePoint);
-        return new Pair<FixType, FixType>(lastFix, firstFix);
+        FixType lastFixBefore = inclusive ? getLastFixAtOrBefore(timePoint) : getLastFixBefore(timePoint);
+        FixType firstFixAfter = inclusive ? getFirstFixAtOrAfter(timePoint) : getFirstFixAfter(timePoint);
+        return new Pair<FixType, FixType>(lastFixBefore, firstFixAfter);
     }
     
     @Override
diff --git a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/TrackedRaceImpl.java b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/TrackedRaceImpl.java
index d311813d7f2..54dc30d79ad 100755
--- a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/TrackedRaceImpl.java
+++ b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/TrackedRaceImpl.java
@@ -523,7 +523,7 @@ public abstract class TrackedRaceImpl implements TrackedRace, CourseListener {
     public WindTrack getOrCreateWindTrack(WindSource windSource) {
         WindTrack result;
         if (windSource.getType() == WindSourceType.COMBINED) {
-            result = new CombinedWindTrackImpl(this, getMillisecondsOverWhichToAverageWind());
+            result = new CombinedWindTrackImpl(this);
         } else {
             synchronized (windTracks) {
                 result = windTracks.get(windSource);
diff --git a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/VirtualWindFixesAsNavigableSet.java b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/VirtualWindFixesAsNavigableSet.java
index d16ab52ab0b..b97eea5b48b 100755
--- a/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/VirtualWindFixesAsNavigableSet.java
+++ b/java/com.sap.sailing.domain/src/com/sap/sailing/domain/tracking/impl/VirtualWindFixesAsNavigableSet.java
@@ -77,13 +77,13 @@ public abstract class VirtualWindFixesAsNavigableSet extends AbstractUnmodifiabl
         final TimePoint timePointOfLastEvent = trackedRace.getTimePointOfLastEvent();
         if (timePointOfLastEvent == null) {
             // nothing received yet; "lowering" to end of time
-            result = new MillisecondsTimePoint((Long.MAX_VALUE - 1) / resolutionInMilliseconds
-                    * resolutionInMilliseconds);
+            result = new MillisecondsTimePoint((Long.MAX_VALUE - 1) / getResolutionInMilliseconds()
+                    * getResolutionInMilliseconds());
         } else if (w.getTimePoint().compareTo(timePointOfLastEvent) > 0) {
             result = lowerToResolution(new DummyWind(timePointOfLastEvent));
         } else {
-            result = new MillisecondsTimePoint((w.getTimePoint().asMillis() - 1) / resolutionInMilliseconds
-                    * resolutionInMilliseconds);
+            result = new MillisecondsTimePoint((w.getTimePoint().asMillis() - 1) / getResolutionInMilliseconds()
+                    * getResolutionInMilliseconds());
         }
         return result;
     }
@@ -93,13 +93,13 @@ public abstract class VirtualWindFixesAsNavigableSet extends AbstractUnmodifiabl
         final TimePoint timePointOfLastEvent = trackedRace.getTimePointOfLastEvent();
         if (timePointOfLastEvent == null) {
             // nothing received yet; "lowering" to end of time
-            result = new MillisecondsTimePoint((Long.MAX_VALUE - 1) / resolutionInMilliseconds
-                    * resolutionInMilliseconds);
+            result = new MillisecondsTimePoint((Long.MAX_VALUE - 1) / getResolutionInMilliseconds()
+                    * getResolutionInMilliseconds());
         } else if (w.getTimePoint().compareTo(timePointOfLastEvent) > 0) {
             result = floorToResolution(new DummyWind(timePointOfLastEvent));
         } else {
-            result = new MillisecondsTimePoint(w.getTimePoint().asMillis() / resolutionInMilliseconds
-                    * resolutionInMilliseconds);
+            result = new MillisecondsTimePoint(w.getTimePoint().asMillis() / getResolutionInMilliseconds()
+                    * getResolutionInMilliseconds());
         }
         return result;
     }
@@ -113,8 +113,8 @@ public abstract class VirtualWindFixesAsNavigableSet extends AbstractUnmodifiabl
         } else if (w.getTimePoint().compareTo(startOfTracking) < 0) {
             result = ceilingToResolution(new DummyWind(startOfTracking));
         } else {
-            result = new MillisecondsTimePoint(((w.getTimePoint().asMillis() - 1) / resolutionInMilliseconds + 1)
-                    * resolutionInMilliseconds);
+            result = new MillisecondsTimePoint(((w.getTimePoint().asMillis() - 1) / getResolutionInMilliseconds() + 1)
+                    * getResolutionInMilliseconds());
         }
         return result;
     }
@@ -128,8 +128,8 @@ public abstract class VirtualWindFixesAsNavigableSet extends AbstractUnmodifiabl
         } else if (w.getTimePoint().compareTo(startOfTracking) < 0) {
             result = higherToResolution(new DummyWind(startOfTracking));
         } else {
-            result = new MillisecondsTimePoint((w.getTimePoint().asMillis() / resolutionInMilliseconds + 1)
-                    * resolutionInMilliseconds);
+            result = new MillisecondsTimePoint((w.getTimePoint().asMillis() / getResolutionInMilliseconds() + 1)
+                    * getResolutionInMilliseconds());
         }
         return result;
     }
@@ -200,7 +200,7 @@ public abstract class VirtualWindFixesAsNavigableSet extends AbstractUnmodifiabl
             @Override
             public Wind next() {
                 Wind result = floor(new DummyWind(timePoint));
-                timePoint = new MillisecondsTimePoint(timePoint.asMillis() + resolutionInMilliseconds);
+                timePoint = new MillisecondsTimePoint(timePoint.asMillis() + getResolutionInMilliseconds());
                 return result;
             }
 
@@ -229,7 +229,7 @@ public abstract class VirtualWindFixesAsNavigableSet extends AbstractUnmodifiabl
             @Override
             public Wind next() {
                 Wind result = floor(new DummyWind(timePoint));
-                timePoint = new MillisecondsTimePoint(timePoint.asMillis() - resolutionInMilliseconds);
+                timePoint = new MillisecondsTimePoint(timePoint.asMillis() - getResolutionInMilliseconds());
                 return result;
             }
 
@@ -297,7 +297,7 @@ public abstract class VirtualWindFixesAsNavigableSet extends AbstractUnmodifiabl
 
     @Override
     public int size() {
-        return (int) ((getTo().asMillis() - getFrom().asMillis()) / resolutionInMilliseconds);
+        return (int) ((getTo().asMillis() - getFrom().asMillis()) / getResolutionInMilliseconds());
     }
 
     @Override
@@ -305,7 +305,7 @@ public abstract class VirtualWindFixesAsNavigableSet extends AbstractUnmodifiabl
         boolean result = false;
         if (o instanceof Wind) {
             Wind wind = (Wind) o;
-            result = wind.getTimePoint().asMillis() % resolutionInMilliseconds == 0
+            result = wind.getTimePoint().asMillis() % getResolutionInMilliseconds() == 0
                     && wind.getTimePoint().compareTo(getFrom()) >= 0 && wind.getTimePoint().compareTo(getTo()) < 0;
         }
         return result;
diff --git a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/server/SailingServiceImpl.java b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/server/SailingServiceImpl.java
index d9bc29bdc87..6a373a54546 100644
--- a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/server/SailingServiceImpl.java
+++ b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/server/SailingServiceImpl.java
@@ -73,6 +73,7 @@ import com.sap.sailing.domain.common.impl.KilometersPerHourSpeedImpl;
 import com.sap.sailing.domain.common.impl.Util;
 import com.sap.sailing.domain.common.impl.Util.Pair;
 import com.sap.sailing.domain.common.impl.Util.Triple;
+import com.sap.sailing.domain.common.impl.WindSourceImpl;
 import com.sap.sailing.domain.leaderboard.Leaderboard;
 import com.sap.sailing.domain.leaderboard.Leaderboard.Entry;
 import com.sap.sailing.domain.leaderboard.LeaderboardGroup;
@@ -443,6 +444,7 @@ public class SailingServiceImpl extends RemoteServiceServlet implements SailingS
             storedURI = rr.storedURI;
         }
         final RacesHandle raceHandle = getService().addTracTracRace(new URL(rr.paramURL), new URI(liveURI), new URI(storedURI),
+                new MillisecondsTimePoint(rr.trackingStartTime), new MillisecondsTimePoint(rr.trackingEndTime),
                 MongoWindStoreFactory.INSTANCE.getMongoWindStore(mongoObjectFactory, domainObjectFactory), TIMEOUT_FOR_RECEIVING_RACE_DEFINITION_IN_MILLISECONDS);
         if (trackWind) {
             new Thread("Wind tracking starter for race "+rr.eventName+"/"+rr.name) {
@@ -550,7 +552,7 @@ public class SailingServiceImpl extends RemoteServiceServlet implements SailingS
                 } else {
                     Util.addAll(trackedRace.getWindSources(), windSourcesToDeliver);
                     // TODO bug #375: add the combined wind; currently, CombinedWindTrackImpl just takes too long to return results...
-                    // windSourcesToDeliver.add(new WindSourceImpl(WindSourceType.COMBINED));
+                    windSourcesToDeliver.add(new WindSourceImpl(WindSourceType.COMBINED));
                 }
                 for (WindSource windSource : windSourcesToDeliver) {
                     WindTrackInfoDTO windTrackInfoDTO = new WindTrackInfoDTO();
@@ -612,7 +614,7 @@ public class SailingServiceImpl extends RemoteServiceServlet implements SailingS
             List<WindSource> windSourcesToDeliver = new ArrayList<WindSource>();
             Util.addAll(trackedRace.getWindSources(), windSourcesToDeliver);
             // TODO bug #375: add the combined wind; currently, CombinedWindTrackImpl just takes too long to return results...
-            // windSourcesToDeliver.add(new WindSourceImpl(WindSourceType.COMBINED));
+            windSourcesToDeliver.add(new WindSourceImpl(WindSourceType.COMBINED));
             for (WindSource windSource : windSourcesToDeliver) {
                 if (windSourceTypeNames == null || windSourceTypeNames.contains(windSource.getType().name())) {
                     TimePoint fromTimePoint = new MillisecondsTimePoint(from);
diff --git a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/shared/components/CompositeSettingsDialogComponent.java b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/shared/components/CompositeSettingsDialogComponent.java
index 09243c3b785..9c17ea70d7b 100755
--- a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/shared/components/CompositeSettingsDialogComponent.java
+++ b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/shared/components/CompositeSettingsDialogComponent.java
@@ -32,13 +32,17 @@ public class CompositeSettingsDialogComponent implements SettingsDialogComponent
 
     @Override
     public Validator<CompositeSettings> getValidator() {
-        // TODO Auto-generated method stub
-        return null;
+        return new CompositeValidator(components);
     }
 
     @Override
     public FocusWidget getFocusWidget() {
-        // TODO Auto-generated method stub
+        for (Component<?> component : components) {
+            FocusWidget fw = component.getSettingsDialogComponent().getFocusWidget();
+            if (fw != null) {
+                return fw;
+            }
+        }
         return null;
     }
 
diff --git a/java/com.sap.sailing.mongodb.test/src/com/sap/sailing/mongodb/test/TestStoringAndRetrievingWindTracksTest.java b/java/com.sap.sailing.mongodb.test/src/com/sap/sailing/mongodb/test/TestStoringAndRetrievingWindTracksTest.java
index ef56ce4b8a3..197bc960499 100755
--- a/java/com.sap.sailing.mongodb.test/src/com/sap/sailing/mongodb/test/TestStoringAndRetrievingWindTracksTest.java
+++ b/java/com.sap.sailing.mongodb.test/src/com/sap/sailing/mongodb/test/TestStoringAndRetrievingWindTracksTest.java
@@ -73,7 +73,7 @@ public class TestStoringAndRetrievingWindTracksTest extends AbstractTracTracLive
         Event domainEvent = domainFactory.getOrCreateEvent(getEvent());
         DynamicTrackedEvent trackedEvent = new RacingEventServiceImpl().getOrCreateTrackedEvent(domainEvent);
         Iterable<Receiver> typeControllers = domainFactory.getUpdateReceivers(trackedEvent, getEvent(),
-                EmptyWindStore.INSTANCE, new DynamicRaceDefinitionSet() {
+                EmptyWindStore.INSTANCE, /* startOfTracking */ null, /* endOfTracking */ null, new DynamicRaceDefinitionSet() {
                     @Override
                     public void addRaceDefinition(RaceDefinition race) {
                     }
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventService.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventService.java
index 01825af4792..807cfeeb583 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventService.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/RacingEventService.java
@@ -16,6 +16,7 @@ import com.sap.sailing.domain.base.Event;
 import com.sap.sailing.domain.base.RaceDefinition;
 import com.sap.sailing.domain.common.EventIdentifier;
 import com.sap.sailing.domain.common.RaceIdentifier;
+import com.sap.sailing.domain.common.TimePoint;
 import com.sap.sailing.domain.common.impl.Util.Pair;
 import com.sap.sailing.domain.common.impl.Util.Triple;
 import com.sap.sailing.domain.leaderboard.Leaderboard;
@@ -113,6 +114,15 @@ public interface RacingEventService extends TrackedEventRegistry {
     RacesHandle addTracTracRace(URL paramURL, URI liveURI, URI storedURI, WindStore windStore, long timeoutInMilliseconds)
             throws MalformedURLException, FileNotFoundException, URISyntaxException;
 
+    /**
+     * Same as {@link #addTracTracRace(URL, URI, URI, WindStore, long)}, only that start and end of tracking are
+     * specified which may help reducing the amount of stored data (particularly mark positions) that needs to be
+     * loaded.
+     */
+    RacesHandle addTracTracRace(URL paramURL, URI liveURI, URI storedURI, TimePoint trackingStartTime,
+            TimePoint trackingEndTime, WindStore windStore, long timeoutForReceivingRaceDefinitionInMilliseconds)
+            throws MalformedURLException, FileNotFoundException, URISyntaxException;
+
     /**
      * Stops tracking all races of the event specified. This will also stop tracking wind for all races of this event.
      * See {@link #stopTrackingWind(Event, RaceDefinition)}. If there were multiple calls to
diff --git a/java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java b/java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java
index dacf2dc0edd..35768804ee4 100755
--- a/java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java
+++ b/java/com.sap.sailing.server/src/com/sap/sailing/server/impl/RacingEventServiceImpl.java
@@ -379,10 +379,18 @@ public class RacingEventServiceImpl implements RacingEventService, EventFetcher,
     @Override
     public synchronized RacesHandle addTracTracRace(URL paramURL, URI liveURI, URI storedURI, WindStore windStore,
             long timeoutInMilliseconds) throws MalformedURLException, FileNotFoundException, URISyntaxException {
+        return addTracTracRace(paramURL, liveURI, storedURI, /* startOfTracking */ null,
+                /* endOfTracking */ null, windStore, timeoutInMilliseconds);
+    }
+    
+    @Override
+    public synchronized RacesHandle addTracTracRace(URL paramURL, URI liveURI, URI storedURI,
+            TimePoint startOfTracking, TimePoint endOfTracking, WindStore windStore,
+            long timeoutInMilliseconds) throws MalformedURLException, FileNotFoundException, URISyntaxException {
         Triple<URL, URI, URI> key = new Triple<URL, URI, URI>(paramURL, liveURI, storedURI);
         RaceTracker tracker = raceTrackersByID.get(key);
         if (tracker == null) {
-            tracker = getDomainFactory().createRaceTracker(paramURL, liveURI, storedURI, windStore, this);
+            tracker = getDomainFactory().createRaceTracker(paramURL, liveURI, storedURI, startOfTracking, endOfTracking, windStore, this);
             raceTrackersByID.put(tracker.getID(), tracker);
             Set<RaceTracker> trackers = raceTrackersByEvent.get(tracker.getEvent());
             if (trackers == null) {