diff --git a/moeo/src/core/moeoDualRealObjectiveVector.h b/moeo/src/core/moeoDualRealObjectiveVector.h
new file mode 100644
index 000000000..9be12d8f7
--- /dev/null
+++ b/moeo/src/core/moeoDualRealObjectiveVector.h
@@ -0,0 +1,114 @@
+/*
+
+(c) 2010 Thales group
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; version 2
+    of the License.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+Contact: http://eodev.sourceforge.net
+
+Authors:
+    Johann Dréo <johann.dreo@thalesgroup.com>
+
+*/
+
+#ifndef _DUALREALOBJECTIVEVECTOR_H_
+#define _DUALREALOBJECTIVEVECTOR_H_
+
+#include <iostream>
+#include <math.h>
+
+#include <eo>
+
+#include <comparator/moeoObjectiveObjectiveVectorComparator.h>
+#include <comparator/moeoParetoObjectiveVectorComparator.h>
+#include <core/moeoRealObjectiveVector.h>
+
+template < class ObjectiveVectorTraits >
+class moeoDualRealObjectiveVector : public moeoScalarObjectiveVector<ObjectiveVectorTraits, eoMinimizingDualFitness >
+{
+    protected:
+        bool _is_feasible;
+
+    public:
+
+        moeoDualRealObjectiveVector(double value=0.0) : moeoScalarObjectiveVector<ObjectiveVectorTraits, eoMinimizingDualFitness >(value, false) {}
+
+        bool is_feasible() const
+        {
+#ifndef NDEBUG
+            // if the feasibility is correctly assigned, 
+            // every scalar's feasibility should be equal to the objective vector
+            for( typename moeoDualRealObjectiveVector::const_iterator it = this->begin(), end = this->end(); it != end; ++it ) {
+                assert( it->is_feasible() == _is_feasible );
+            }
+#endif
+            return _is_feasible;
+        }
+
+        //! One should ensure that feasabilities of scalars are all the same
+        void is_feasible( bool value )
+        {
+#ifndef NDEBUG
+            for( typename moeoDualRealObjectiveVector::const_iterator it = this->begin(), end = this->end(); it != end; ++it ) {
+                assert( it->is_feasible() == value );
+            }
+#endif
+            _is_feasible = value;
+        }
+
+        bool dominates(const moeoRealObjectiveVector < ObjectiveVectorTraits > & other) const
+        {
+            // am I better than the other ?
+
+            // if I'm feasible and the other is not
+            if( this->is_feasible() && !other.is_feasible() ) {
+                // no, the other has a better objective
+                return true;
+
+            } else if( !this->is_feasible() && other.is_feasible() ) {
+                // yes, a feasible objective is always better than an unfeasible one
+                return false;
+
+            } else {
+                // the two objective are of the same type
+                // lets rely on the comparator
+                moeoParetoObjectiveVectorComparator< moeoDualRealObjectiveVector<ObjectiveVectorTraits> > comparator;
+                return comparator(other, *this);
+            }
+        }
+
+        //! Use when maximizing an 
+        bool operator<(const moeoDualRealObjectiveVector < ObjectiveVectorTraits > & other) const
+        {
+            // am I better than the other ?
+
+            // if I'm feasible and the other is not
+            if( this->is_feasible() && !other.is_feasible() ) {
+                // no, the other has a better objective
+                return true;
+
+            } else if( !this->is_feasible() && other.is_feasible() ) {
+                // yes, a feasible objective is always better than an unfeasible one
+                return false;
+
+            } else {
+                moeoObjectiveObjectiveVectorComparator < moeoDualRealObjectiveVector < ObjectiveVectorTraits > > cmp;
+                return cmp(*this, other);
+            }
+        }
+};
+
+
+#endif /*_DUALREALOBJECTIVEVECTOR_H_*/
diff --git a/moeo/src/moeo b/moeo/src/moeo
index 9ac18c050..b2e7b4db1 100644
--- a/moeo/src/moeo
+++ b/moeo/src/moeo
@@ -88,7 +88,9 @@
 #include <core/moeoIntVector.h>
 #include <core/moeoObjectiveVector.h>
 #include <core/moeoObjectiveVectorTraits.h>
+#include <core/moeoScalarObjectiveVector.h>
 #include <core/moeoRealObjectiveVector.h>
+#include <core/moeoDualRealObjectiveVector.h>
 #include <core/moeoRealVector.h>
 #include <core/moeoVector.h>