Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/Ringtoets.StabilityStoneCover.Service.csproj
===================================================================
diff -u -re69acb9595f7bf1d202ddd1fb51934b66768b75d -r77ac74d895ded1f0d1f81a67b02a2f4d80299a3b
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/Ringtoets.StabilityStoneCover.Service.csproj	(.../Ringtoets.StabilityStoneCover.Service.csproj)	(revision e69acb9595f7bf1d202ddd1fb51934b66768b75d)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/Ringtoets.StabilityStoneCover.Service.csproj	(.../Ringtoets.StabilityStoneCover.Service.csproj)	(revision 77ac74d895ded1f0d1f81a67b02a2f4d80299a3b)
@@ -65,6 +65,11 @@
       <Name>Core.Common.Base</Name>
       <Private>False</Private>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\..\Core\Common\src\Core.Common.Utils\Core.Common.Utils.csproj">
+      <Project>{F49BD8B2-332A-4C91-A196-8CCE0A2C7D98}</Project>
+      <Name>Core.Common.Utils</Name>
+      <Private>False</Private>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\Common\src\Ringtoets.Common.Data\Ringtoets.Common.Data.csproj">
       <Project>{d4200f43-3f72-4f42-af0a-8ced416a38ec}</Project>
       <Name>Ringtoets.Common.Data</Name>
Index: Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverDataSynchronizationService.cs
===================================================================
diff -u -r2973c5f790a5131e427bd5f73e2a620044199639 -r77ac74d895ded1f0d1f81a67b02a2f4d80299a3b
--- Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverDataSynchronizationService.cs	(.../StabilityStoneCoverDataSynchronizationService.cs)	(revision 2973c5f790a5131e427bd5f73e2a620044199639)
+++ Ringtoets/StabilityStoneCover/src/Ringtoets.StabilityStoneCover.Service/StabilityStoneCoverDataSynchronizationService.cs	(.../StabilityStoneCoverDataSynchronizationService.cs)	(revision 77ac74d895ded1f0d1f81a67b02a2f4d80299a3b)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
+using Core.Common.Utils.Extensions;
 using Ringtoets.HydraRing.Data;
 using Ringtoets.StabilityStoneCover.Data;
 
@@ -95,6 +96,32 @@
             return affectedItems;
         }
 
+        /// <summary>
+        /// Clears the output for all calculations in the <see cref="StabilityStoneCoverFailureMechanism"/>.
+        /// </summary>
+        /// <param name="failureMechanism">The <see cref="StabilityStoneCoverFailureMechanism"/>
+        /// which contains the calculations.</param>
+        /// <returns>An <see cref="IEnumerable{T}"/> of calculations which are affected by
+        /// clearing the output.</returns>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="failureMechanism"/>
+        /// is <c>null</c>.</exception>
+        public static IEnumerable<StabilityStoneCoverWaveConditionsCalculation> ClearAllWaveConditionsCalculationOutput(StabilityStoneCoverFailureMechanism failureMechanism)
+        {
+            if (failureMechanism == null)
+            {
+                throw new ArgumentNullException("failureMechanism");
+            }
+
+            var affectedItems = failureMechanism.Calculations
+                                                .Cast<StabilityStoneCoverWaveConditionsCalculation>()
+                                                .Where(c => c.HasOutput)
+                                                .ToArray();
+
+            affectedItems.ForEachElementDo(ClearWaveConditionsCalculationOutput);
+
+            return affectedItems;
+        }
+
         private static void ClearHydraulicBoundaryLocation(StabilityStoneCoverWaveConditionsCalculation calculation)
         {
             calculation.InputParameters.HydraulicBoundaryLocation = null;
Index: Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Service.Test/StabilityStoneCoverDataSynchronizationServiceTest.cs
===================================================================
diff -u -rc96cfd7d2d167db3b0775f7d76f320c5e582ae27 -r77ac74d895ded1f0d1f81a67b02a2f4d80299a3b
--- Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Service.Test/StabilityStoneCoverDataSynchronizationServiceTest.cs	(.../StabilityStoneCoverDataSynchronizationServiceTest.cs)	(revision c96cfd7d2d167db3b0775f7d76f320c5e582ae27)
+++ Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Service.Test/StabilityStoneCoverDataSynchronizationServiceTest.cs	(.../StabilityStoneCoverDataSynchronizationServiceTest.cs)	(revision 77ac74d895ded1f0d1f81a67b02a2f4d80299a3b)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using NUnit.Framework;
+using Ringtoets.Common.Data.Probability;
 using Ringtoets.HydraRing.Data;
 using Ringtoets.Revetment.Data;
 using Ringtoets.StabilityStoneCover.Data;
@@ -230,5 +231,52 @@
             // Assert
             CollectionAssert.IsEmpty(affectedItems);
         }
+
+        [Test]
+        public void ClearAllWaveConditionsCalculationOutput_FailureMechanismNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate call = () => StabilityStoneCoverDataSynchronizationService.ClearAllWaveConditionsCalculationOutput(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("failureMechanism", exception.ParamName);
+        }
+
+        [Test]
+        public void ClearAllWaveConditionsCalculationOutput_WithOutput_ClearsCalculationsOutputAndReturnsAffectedCalculations()
+        {
+            // Setup
+            StabilityStoneCoverFailureMechanism failureMechanism = new StabilityStoneCoverFailureMechanism();
+            StabilityStoneCoverWaveConditionsCalculation calculation1 = new StabilityStoneCoverWaveConditionsCalculation
+            {
+                Output = new StabilityStoneCoverWaveConditionsOutput(Enumerable.Empty<WaveConditionsOutput>(), Enumerable.Empty<WaveConditionsOutput>())
+            };
+
+            StabilityStoneCoverWaveConditionsCalculation calculation2 = new StabilityStoneCoverWaveConditionsCalculation
+            {
+                Output = new StabilityStoneCoverWaveConditionsOutput(Enumerable.Empty<WaveConditionsOutput>(), Enumerable.Empty<WaveConditionsOutput>())
+            };
+
+            StabilityStoneCoverWaveConditionsCalculation calculation3 = new StabilityStoneCoverWaveConditionsCalculation();
+
+            failureMechanism.WaveConditionsCalculationGroup.Children.Add(calculation1);
+            failureMechanism.WaveConditionsCalculationGroup.Children.Add(calculation2);
+            failureMechanism.WaveConditionsCalculationGroup.Children.Add(calculation3);
+
+            // Call
+            IEnumerable<StabilityStoneCoverWaveConditionsCalculation> affectedItems = StabilityStoneCoverDataSynchronizationService.ClearAllWaveConditionsCalculationOutput(failureMechanism);
+
+            // Assert
+            foreach (StabilityStoneCoverWaveConditionsCalculation calculation in failureMechanism.WaveConditionsCalculationGroup.Children.Cast<StabilityStoneCoverWaveConditionsCalculation>())
+            {
+                Assert.IsNull(calculation.Output);
+            }
+            CollectionAssert.AreEqual(new[]
+            {
+                calculation1,
+                calculation2
+            }, affectedItems);
+        }
     }
 }
\ No newline at end of file