Index: Ringtoets/Common/src/Ringtoets.Common.Data/Calculation/ICalculation.cs
===================================================================
diff -u -r6b43c39e0f54d1054729aaed5aa6dc19149ef72a -r0a94ed42cb943659d68be2ce6fb430f8f29fc3f3
--- Ringtoets/Common/src/Ringtoets.Common.Data/Calculation/ICalculation.cs	(.../ICalculation.cs)	(revision 6b43c39e0f54d1054729aaed5aa6dc19149ef72a)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Calculation/ICalculation.cs	(.../ICalculation.cs)	(revision 0a94ed42cb943659d68be2ce6fb430f8f29fc3f3)
@@ -52,5 +52,10 @@
         /// Gets the input of the calculation to observe.
         /// </summary>
         ICalculationInput GetObservableInput();
+
+        /// <summary>
+        /// Gets the output of the calculation to observe.
+        /// </summary>
+        ICalculationOutput GetObservableOutput();
     }
 }
\ No newline at end of file