reverted maneuver duration back to 8000ms

java/com.sap.sailing.domain/src/com/sap/sailing/domain/base/impl/BoatClassImpl.java

@@ -24,8 +24,7 @@ public class BoatClassImpl extends NamedImpl implements BoatClass {
     public BoatClassImpl(String name, boolean typicallyStartsUpwind) {
         super(name);
         this.typicallyStartsUpwind = typicallyStartsUpwind;
-        approximateManeuverDurationInMilliseconds = 9500; // as discussed with Dennis Gehrlein (8000), then incremented
-                                                          // a bit to 9500 to better catch penalty circles
+        approximateManeuverDurationInMilliseconds = 8000; // as discussed with Dennis Gehrlein
     }
 
     @Override