diff --git a/src/BreCalClient/EditTimesAgencyIncomingControl.xaml b/src/BreCalClient/EditTimesAgencyIncomingControl.xaml
index 157f88a..fc4d4f9 100644
--- a/src/BreCalClient/EditTimesAgencyIncomingControl.xaml
+++ b/src/BreCalClient/EditTimesAgencyIncomingControl.xaml
@@ -53,6 +53,11 @@
         <ComboBox x:Name="comboBoxPierside" Grid.Column="1" Grid.Row="3" Margin="2" >
             <ComboBoxItem Content="{x:Static p:Resources.textPort}" />
             <ComboBoxItem Content="{x:Static p:Resources.textStarboard}" />
+            <ComboBox.ContextMenu>
+                <ContextMenu>
+                    <MenuItem Header="{x:Static p:Resources.textClearAssignment}" Name="contextMenuItemClearPierside" Click="contextMenuItemClearPierside_Click" />
+                </ContextMenu>
+            </ComboBox.ContextMenu>
         </ComboBox>
         <Label Content="{x:Static p:Resources.textBerthRemarks}" Grid.Column="0" Grid.Row="4" HorizontalContentAlignment="Right" />
         <TextBox x:Name="textBoxBerthRemarks" Grid.Column="1" Grid.Row="4" Margin="2" Grid.RowSpan="2" VerticalContentAlignment="Top" AcceptsReturn="True" MaxLength="512"/>
diff --git a/src/BreCalClient/EditTimesAgencyIncomingControl.xaml.cs b/src/BreCalClient/EditTimesAgencyIncomingControl.xaml.cs
index af88036..511aa3a 100644
--- a/src/BreCalClient/EditTimesAgencyIncomingControl.xaml.cs
+++ b/src/BreCalClient/EditTimesAgencyIncomingControl.xaml.cs
@@ -298,6 +298,11 @@ namespace BreCalClient
         {
             this.comboBoxTerminal.SelectedIndex = -1;
             this.ShipcallModel.AssignedParticipants.Remove(Extensions.ParticipantType.TERMINAL);
+        }        
+
+        private void contextMenuItemClearPierside_Click(object sender, RoutedEventArgs e)
+        {
+            this.comboBoxPierside.SelectedIndex = -1;
         }
 
         #endregion
diff --git a/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml b/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml
index d8b8ec8..bb4563c 100644
--- a/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml
+++ b/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml
@@ -48,6 +48,11 @@
         <ComboBox x:Name="comboBoxPierside" Grid.Column="1" Grid.Row="3" Margin="2" >
             <ComboBoxItem Content="{x:Static p:Resources.textPort}" />
             <ComboBoxItem Content="{x:Static p:Resources.textStarboard}" />
+            <ComboBox.ContextMenu>
+                <ContextMenu>
+                    <MenuItem Header="{x:Static p:Resources.textClearAssignment}" Name="contextMenuItemClearPierside" Click="contextMenuItemClearPierside_Click" />
+                </ContextMenu>
+            </ComboBox.ContextMenu>
         </ComboBox>
         <Label Content="{x:Static p:Resources.textBerthRemarks}" Grid.Column="0" Grid.Row="4" HorizontalContentAlignment="Right" />
         <TextBox x:Name="textBoxBerthRemarks" Grid.Column="1" Grid.Row="4" Margin="2" Grid.RowSpan="2" VerticalContentAlignment="Top" AcceptsReturn="True" MaxLength="512"/>
diff --git a/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml.cs b/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml.cs
index 2fd703a..4cb0909 100644
--- a/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml.cs
+++ b/src/BreCalClient/EditTimesAgencyOutgoingControl.xaml.cs
@@ -283,6 +283,11 @@ namespace BreCalClient
         {
             this.comboBoxTerminal.SelectedIndex = -1;
             this.ShipcallModel.AssignedParticipants.Remove(Extensions.ParticipantType.TERMINAL);
+        }        
+
+        private void contextMenuItemClearPierside_Click(object sender, RoutedEventArgs e)
+        {
+            this.comboBoxPierside.SelectedIndex = -1;
         }
 
         #endregion
diff --git a/src/BreCalClient/EditTimesAgencyShiftingControl.xaml b/src/BreCalClient/EditTimesAgencyShiftingControl.xaml
index 10f751c..ca6e1a5 100644
--- a/src/BreCalClient/EditTimesAgencyShiftingControl.xaml
+++ b/src/BreCalClient/EditTimesAgencyShiftingControl.xaml
@@ -85,6 +85,11 @@
         <ComboBox x:Name="comboBoxPiersideArrival" Grid.Column="1" Grid.Row="11" Margin="2" >
             <ComboBoxItem Content="{x:Static p:Resources.textPort}" />
             <ComboBoxItem Content="{x:Static p:Resources.textStarboard}" />
+            <ComboBox.ContextMenu>
+                <ContextMenu>
+                    <MenuItem Header="{x:Static p:Resources.textClearAssignment}" Name="contextMenuItemClearPierside" Click="contextMenuItemClearPierside_Click" />
+                </ContextMenu>
+            </ComboBox.ContextMenu>
         </ComboBox>
         <Label Content="{x:Static p:Resources.textBerthRemarks}" Grid.Column="0" Grid.Row="12" HorizontalContentAlignment="Right" />
         <TextBox x:Name="textBoxBerthRemarksArrival" Grid.Column="1" Grid.Row="12" Margin="2,1,2,3" Grid.RowSpan="2" VerticalContentAlignment="Top" AcceptsReturn="True" MaxLength="512"/>
diff --git a/src/BreCalClient/EditTimesAgencyShiftingControl.xaml.cs b/src/BreCalClient/EditTimesAgencyShiftingControl.xaml.cs
index d17a50f..f8c68b7 100644
--- a/src/BreCalClient/EditTimesAgencyShiftingControl.xaml.cs
+++ b/src/BreCalClient/EditTimesAgencyShiftingControl.xaml.cs
@@ -305,6 +305,11 @@ namespace BreCalClient
         {
             this.comboBoxTerminal.SelectedIndex = -1;
             this.ShipcallModel.AssignedParticipants.Remove(Extensions.ParticipantType.TERMINAL);
+        }        
+
+        private void contextMenuItemClearPierside_Click(object sender, RoutedEventArgs e)
+        {
+            this.comboBoxPiersideArrival.SelectedIndex = -1;
         }
 
         #endregion
diff --git a/src/BreCalClient/EditTimesTerminalControl.xaml b/src/BreCalClient/EditTimesTerminalControl.xaml
index 394215d..71c5976 100644
--- a/src/BreCalClient/EditTimesTerminalControl.xaml
+++ b/src/BreCalClient/EditTimesTerminalControl.xaml
@@ -64,6 +64,11 @@
         <ComboBox x:Name="comboBoxPierside" Grid.Column="1" Grid.Row="3" Margin="2" IsEnabled="False">
             <ComboBoxItem Content="{x:Static p:Resources.textPort}" />
             <ComboBoxItem Content="{x:Static p:Resources.textStarboard}" />
+            <ComboBox.ContextMenu>
+                <ContextMenu>
+                    <MenuItem Header="{x:Static p:Resources.textClearAssignment}" Name="contextMenuItemClearPierside" Click="contextMenuItemClearPierside_Click" />
+                </ContextMenu>
+            </ComboBox.ContextMenu>
         </ComboBox>
         <TextBox Grid.Row="4" Grid.Column="1" Margin="2" Name="textBoxBerthRemarks" TextWrapping="Wrap" AcceptsReturn="True" SpellCheck.IsEnabled="True" AcceptsTab="False" IsEnabled="False" />
         <TextBox Grid.Row="5" Grid.Column="1" Margin="2" Name="textBoxRemarks" TextWrapping="Wrap" AcceptsReturn="True" SpellCheck.IsEnabled="True" AcceptsTab="False" IsEnabled="False" />
diff --git a/src/BreCalClient/EditTimesTerminalControl.xaml.cs b/src/BreCalClient/EditTimesTerminalControl.xaml.cs
index f8c8220..eaed03c 100644
--- a/src/BreCalClient/EditTimesTerminalControl.xaml.cs
+++ b/src/BreCalClient/EditTimesTerminalControl.xaml.cs
@@ -61,6 +61,10 @@ namespace BreCalClient
             this.DialogResult = false;
             this.Close();
         }
+        private void contextMenuItemClearPierside_Click(object sender, RoutedEventArgs e)
+        {
+            this.comboBoxPierside.SelectedIndex = -1;
+        }
 
         #endregion