diff --git a/projet.use b/projet.use
index 771b205..62123e3 100644
--- a/projet.use
+++ b/projet.use
@@ -69,8 +69,6 @@ attributes
     type: TypeBateau
     longueur: Integer
     Etat: EtatBateau
-constraints
-    inv longueur: type = TypeBateau::Torpilleur implies longueur = 2
 end
 
 association Utilise between
diff --git a/projet_default.clt b/projet_default.clt
deleted file mode 100644
index f51221c..0000000
--- a/projet_default.clt
+++ /dev/null
@@ -1,928 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?><diagram_Layout version="13">
-    <diagramOptions>
-        <autolayout>false</autolayout>
-        <antialiasing>false</antialiasing>
-        <showassocnames>false</showassocnames>
-        <showattributes>true</showattributes>
-        <showmultiplicities>false</showmultiplicities>
-        <showoperations>false</showoperations>
-        <showrolenames>true</showrolenames>
-        <showgrid>false</showgrid>
-    </diagramOptions>
-    <node id="Plateau" sizeCalculated="true" type="Class">
-        <name>Plateau</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>78.0</x>
-            <y>52.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="Flotte" sizeCalculated="true" type="Class">
-        <name>Flotte</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>3.0</x>
-            <y>40.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="Coup" sizeCalculated="true" type="Class">
-        <name>Coup</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>35.0</x>
-            <y>90.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="Bateau" sizeCalculated="true" type="Class">
-        <name>Bateau</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>21.0</x>
-            <y>47.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="Jeu" sizeCalculated="true" type="Class">
-        <name>Jeu</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>30.0</x>
-            <y>24.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="Joueur" sizeCalculated="true" type="Class">
-        <name>Joueur</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>90.0</x>
-            <y>39.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="Case" sizeCalculated="true" type="Class">
-        <name>Case</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>98.0</x>
-            <y>71.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="TypeCoup" sizeCalculated="true" type="Enumeration">
-        <name>TypeCoup</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>70.0</x>
-            <y>88.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="TypeCase" sizeCalculated="true" type="Enumeration">
-        <name>TypeCase</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>74.0</x>
-            <y>2.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="EtatBateau" sizeCalculated="true" type="Enumeration">
-        <name>EtatBateau</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>50.0</x>
-            <y>23.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <node id="TypeBateau" sizeCalculated="true" type="Enumeration">
-        <name>TypeBateau</name>
-        <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyFixed">
-            <x>17.0</x>
-            <y>94.0</y>
-        </strategy>
-        <hidden>false</hidden>
-    </node>
-    <edge type="BinaryEdge">
-        <source>Case</source>
-        <target>Bateau</target>
-        <name>Repartit</name>
-        <properties>
-            <edgeproperty id="Repartit::source::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>cases</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Repartit::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Repartit::source::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>0..1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Repartit::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Repartit::AssociationName" sizeCalculated="true" type="associationName" userDefined="false" visible="true">
-                <name>Repartit</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyInBetween">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <offsetX>0.0</offsetX>
-                    <offsetY>-10.0</offsetY>
-                    <related length="2">
-                        <related0>Repartit::WayPoint::0</related0>
-                        <related1>Repartit::WayPoint::1</related1>
-                    </related>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Repartit::target::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>bateau</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Repartit::WayPoint::1</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Repartit::target::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>2..5</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Repartit::WayPoint::1</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-        </properties>
-        <waypoints>
-            <edgeproperty id="Repartit::WayPoint::0" sizeCalculated="true" type="WayPoint" userDefined="false" visible="true">
-                <name>0</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyAttachedIntersection">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                </strategy>
-                <id>0</id>
-                <specialid>1</specialid>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Repartit::WayPoint::1" sizeCalculated="true" type="WayPoint" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyAttachedIntersection">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                </strategy>
-                <id>1</id>
-                <specialid>2</specialid>
-                <hidden>false</hidden>
-            </edgeproperty>
-        </waypoints>
-        <hidden>false</hidden>
-    </edge>
-    <edge type="BinaryEdge">
-        <source>Case</source>
-        <target>Plateau</target>
-        <name>Compose</name>
-        <properties>
-            <edgeproperty id="Compose::source::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>100</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Compose::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Compose::source::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>cases</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Compose::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Compose::AssociationName" sizeCalculated="true" type="associationName" userDefined="false" visible="true">
-                <name>Compose</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyInBetween">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <offsetX>0.0</offsetX>
-                    <offsetY>-10.0</offsetY>
-                    <related length="2">
-                        <related0>Compose::WayPoint::0</related0>
-                        <related1>Compose::WayPoint::1</related1>
-                    </related>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Compose::target::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>plateau</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Compose::WayPoint::1</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Compose::target::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Compose::WayPoint::1</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-        </properties>
-        <waypoints>
-            <edgeproperty id="Compose::WayPoint::0" sizeCalculated="true" type="WayPoint" userDefined="false" visible="true">
-                <name>0</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyAttachedIntersection">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                </strategy>
-                <id>0</id>
-                <specialid>1</specialid>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Compose::WayPoint::1" sizeCalculated="true" type="WayPoint" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyAttachedIntersection">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                </strategy>
-                <id>1</id>
-                <specialid>2</specialid>
-                <hidden>false</hidden>
-            </edgeproperty>
-        </waypoints>
-        <hidden>false</hidden>
-    </edge>
-    <edge type="BinaryEdge">
-        <source>Case</source>
-        <target>Coup</target>
-        <name>Etat</name>
-        <properties>
-            <edgeproperty id="Etat::source::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Etat::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Etat::source::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>case</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Etat::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Etat::AssociationName" sizeCalculated="true" type="associationName" userDefined="false" visible="true">
-                <name>Etat</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyInBetween">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <offsetX>0.0</offsetX>
-                    <offsetY>-10.0</offsetY>
-                    <related length="2">
-                        <related0>Etat::WayPoint::0</related0>
-                        <related1>Etat::WayPoint::1</related1>
-                    </related>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Etat::target::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>coup</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Etat::WayPoint::1</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Etat::target::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Etat::WayPoint::1</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-        </properties>
-        <waypoints>
-            <edgeproperty id="Etat::WayPoint::0" sizeCalculated="true" type="WayPoint" userDefined="false" visible="true">
-                <name>0</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyAttachedIntersection">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                </strategy>
-                <id>0</id>
-                <specialid>1</specialid>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Etat::WayPoint::1" sizeCalculated="true" type="WayPoint" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyAttachedIntersection">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                </strategy>
-                <id>1</id>
-                <specialid>2</specialid>
-                <hidden>false</hidden>
-            </edgeproperty>
-        </waypoints>
-        <hidden>false</hidden>
-    </edge>
-    <edge type="BinaryEdge">
-        <source>Joueur</source>
-        <target>Flotte</target>
-        <name>Appartient</name>
-        <properties>
-            <edgeproperty id="Appartient::source::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>joueur</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Appartient::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Appartient::source::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Appartient::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Appartient::AssociationName" sizeCalculated="true" type="associationName" userDefined="false" visible="true">
-                <name>Appartient</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyInBetween">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <offsetX>0.0</offsetX>
-                    <offsetY>-10.0</offsetY>
-                    <related length="2">
-                        <related0>Appartient::WayPoint::0</related0>
-                        <related1>Appartient::WayPoint::1</related1>
-                    </related>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Appartient::target::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>flotte</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Appartient::WayPoint::1</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Appartient::target::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Appartient::WayPoint::1</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-        </properties>
-        <waypoints>
-            <edgeproperty id="Appartient::WayPoint::0" sizeCalculated="true" type="WayPoint" userDefined="false" visible="true">
-                <name>0</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyAttachedIntersection">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                </strategy>
-                <id>0</id>
-                <specialid>1</specialid>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Appartient::WayPoint::1" sizeCalculated="true" type="WayPoint" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyAttachedIntersection">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                </strategy>
-                <id>1</id>
-                <specialid>2</specialid>
-                <hidden>false</hidden>
-            </edgeproperty>
-        </waypoints>
-        <hidden>false</hidden>
-    </edge>
-    <edge type="BinaryEdge">
-        <source>Joueur</source>
-        <target>Plateau</target>
-        <name>Utilise</name>
-        <properties>
-            <edgeproperty id="Utilise::source::rolename" sizeCalculated="true" type="rolename" userDefined="false" visible="true">
-                <name>joueur</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Utilise::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>TOP</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Utilise::source::multiplicity" sizeCalculated="true" type="multiplicity" userDefined="false" visible="true">
-                <name>1</name>
-                <strategy type="org.tzi.use.gui.views.diagrams.elements.positioning.StrategyRelativeToAttached">
-                    <userOffsetX>0.0</userOffsetX>
-                    <userOffsetY>0.0</userOffsetY>
-                    <attached>Utilise::WayPoint::0</attached>
-                    <offset_x>8</offset_x>
-                    <offset_y>8</offset_y>
-                    <placement>BOTTOM</placement>
-                </strategy>
-                <hidden>false</hidden>
-            </edgeproperty>
-            <edgeproperty id="Utilise::AssociationName" sizeCalculated="true" type="associationName" userDefined="false" visible="true">
-                <name>Utilise</name>
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