Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/Input/UpliftVanSlipPlane.cs
===================================================================
diff -u -r2a3bbcc3e2174b2c9b8ceb6123cef7d3d1bf69fe -r566943640717a91ff377a58a341bbbe1bcd2e516
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/Input/UpliftVanSlipPlane.cs	(.../UpliftVanSlipPlane.cs)	(revision 2a3bbcc3e2174b2c9b8ceb6123cef7d3d1bf69fe)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Calculators/UpliftVan/Input/UpliftVanSlipPlane.cs	(.../UpliftVanSlipPlane.cs)	(revision 566943640717a91ff377a58a341bbbe1bcd2e516)
@@ -39,11 +39,10 @@
         /// <item><see cref="TangentLinesAutomaticAtBoundaries"/> is set to <c>true</c>;</item>
         /// <item><see cref="TangentZTop"/> is set to <see cref="double.NaN"/>;</item>
         /// <item><see cref="TangentZBottom"/> is set to <see cref="double.NaN"/>;</item>
-        /// <item><see cref="TangentLineNumber"/> is set to <c>0</c>;</item>
-        /// <item><see cref="MaxSpacingBetweenBoundaries"/> is set to <see cref="double.NaN"/>.</item>
+        /// <item><see cref="TangentLineNumber"/> is set to <c>0</c>.</item>
         /// </list>
         /// </remarks>
-        public UpliftVanSlipPlane() : this(double.NaN, double.NaN, 0, double.NaN)
+        public UpliftVanSlipPlane() : this(double.NaN, double.NaN, 0)
         {
             GridAutomaticDetermined = true;
             TangentLinesAutomaticAtBoundaries = true;
@@ -60,12 +59,11 @@
         /// <item><see cref="TangentLinesAutomaticAtBoundaries"/> is set to <c>true</c>;</item>
         /// <item><see cref="TangentZTop"/> is set to <see cref="double.NaN"/>;</item>
         /// <item><see cref="TangentZBottom"/> is set to <see cref="double.NaN"/>;</item>
-        /// <item><see cref="TangentLineNumber"/> is set to <c>0</c>;</item>
-        /// <item><see cref="MaxSpacingBetweenBoundaries"/> is set to <see cref="double.NaN"/>.</item>
+        /// <item><see cref="TangentLineNumber"/> is set to <c>0</c>.</item>
         /// </list>
         /// </remarks>
         public UpliftVanSlipPlane(UpliftVanGrid leftGrid, UpliftVanGrid rightGrid)
-            : this(double.NaN, double.NaN, 0, double.NaN)
+            : this(double.NaN, double.NaN, 0)
         {
             SetGrids(leftGrid, rightGrid);
             TangentLinesAutomaticAtBoundaries = true;
@@ -83,18 +81,17 @@
         /// </list>
         /// </remarks>
         public UpliftVanSlipPlane(UpliftVanGrid leftGrid, UpliftVanGrid rightGrid, double tangentZTop,
-                                  double tangentZBottom, int tangentLineNumber, double maxSpacingBetweenBoundaries)
-            : this(tangentZTop, tangentZBottom, tangentLineNumber, maxSpacingBetweenBoundaries)
+                                  double tangentZBottom, int tangentLineNumber)
+            : this(tangentZTop, tangentZBottom, tangentLineNumber)
         {
             SetGrids(leftGrid, rightGrid);
         }
 
-        private UpliftVanSlipPlane(double tangentZTop, double tangentZBottom, int tangentLineNumber, double maxSpacingBetweenBoundaries)
+        private UpliftVanSlipPlane(double tangentZTop, double tangentZBottom, int tangentLineNumber)
         {
             TangentZTop = tangentZTop;
             TangentZBottom = tangentZBottom;
             TangentLineNumber = tangentLineNumber;
-            MaxSpacingBetweenBoundaries = maxSpacingBetweenBoundaries;
         }
 
         /// <summary>
@@ -134,11 +131,6 @@
         /// </summary>
         public int TangentLineNumber { get; }
 
-        /// <summary>
-        /// Gets the max spacing between boundaries.
-        /// </summary>
-        public double MaxSpacingBetweenBoundaries { get; }
-
         private void SetGrids(UpliftVanGrid leftGrid, UpliftVanGrid rightGrid)
         {
             if (leftGrid == null)
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Creators/Input/SlipPlaneUpliftVanCreator.cs
===================================================================
diff -u -r55f1926dba5945d7b2ef8adabb2ba3c8ad6c21ce -r566943640717a91ff377a58a341bbbe1bcd2e516
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Creators/Input/SlipPlaneUpliftVanCreator.cs	(.../SlipPlaneUpliftVanCreator.cs)	(revision 55f1926dba5945d7b2ef8adabb2ba3c8ad6c21ce)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.KernelWrapper/Creators/Input/SlipPlaneUpliftVanCreator.cs	(.../SlipPlaneUpliftVanCreator.cs)	(revision 566943640717a91ff377a58a341bbbe1bcd2e516)
@@ -71,8 +71,7 @@
                 AutomaticAtBoundaries = slipPlane.TangentLinesAutomaticAtBoundaries,
                 TangentLineZTop = slipPlane.TangentZTop,
                 TangentLineZBottom = slipPlane.TangentZBottom,
-                TangentLineNumber = slipPlane.TangentLineNumber,
-                MaxSpacingBetweenBoundaries = slipPlane.MaxSpacingBetweenBoundaries
+                TangentLineNumber = slipPlane.TangentLineNumber
             };
         }
 
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/Converters/UpliftVanSlipPlaneConverter.cs
===================================================================
diff -u -r59adecfc7f82ab8277440ecae147453f5cbddbbf -r566943640717a91ff377a58a341bbbe1bcd2e516
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/Converters/UpliftVanSlipPlaneConverter.cs	(.../UpliftVanSlipPlaneConverter.cs)	(revision 59adecfc7f82ab8277440ecae147453f5cbddbbf)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Service/Converters/UpliftVanSlipPlaneConverter.cs	(.../UpliftVanSlipPlaneConverter.cs)	(revision 566943640717a91ff377a58a341bbbe1bcd2e516)
@@ -56,7 +56,7 @@
             UpliftVanGrid rightGrid = ConvertGrid(input.RightGrid);
 
             return input.TangentLineDeterminationType == MacroStabilityInwardsTangentLineDeterminationType.Specified
-                       ? new UpliftVanSlipPlane(leftGrid, rightGrid, input.TangentLineZTop, input.TangentLineZBottom, 1, 10)
+                       ? new UpliftVanSlipPlane(leftGrid, rightGrid, input.TangentLineZTop, input.TangentLineZBottom, 1)
                        : new UpliftVanSlipPlane(leftGrid, rightGrid);
         }
 
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Calculators/UpliftVan/Input/UpliftVanSlipPlaneTest.cs
===================================================================
diff -u -r2a3bbcc3e2174b2c9b8ceb6123cef7d3d1bf69fe -r566943640717a91ff377a58a341bbbe1bcd2e516
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Calculators/UpliftVan/Input/UpliftVanSlipPlaneTest.cs	(.../UpliftVanSlipPlaneTest.cs)	(revision 2a3bbcc3e2174b2c9b8ceb6123cef7d3d1bf69fe)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Calculators/UpliftVan/Input/UpliftVanSlipPlaneTest.cs	(.../UpliftVanSlipPlaneTest.cs)	(revision 566943640717a91ff377a58a341bbbe1bcd2e516)
@@ -44,7 +44,6 @@
             Assert.IsNaN(slipPlane.TangentZTop);
             Assert.IsNaN(slipPlane.TangentZBottom);
             Assert.AreEqual(0, slipPlane.TangentLineNumber);
-            Assert.IsNaN(slipPlane.MaxSpacingBetweenBoundaries);
         }
 
         [Test]
@@ -93,7 +92,6 @@
             Assert.IsNaN(slipPlane.TangentZTop);
             Assert.IsNaN(slipPlane.TangentZBottom);
             Assert.AreEqual(0, slipPlane.TangentLineNumber);
-            Assert.IsNaN(slipPlane.MaxSpacingBetweenBoundaries);
         }
 
         [Test]
@@ -103,7 +101,7 @@
             UpliftVanGrid grid = UpliftVanGridTestFactory.Create();
 
             // Call
-            TestDelegate test = () => new UpliftVanSlipPlane(null, grid, 0, 0, 0, 0);
+            TestDelegate test = () => new UpliftVanSlipPlane(null, grid, 0, 0, 0);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(test);
@@ -117,7 +115,7 @@
             UpliftVanGrid grid = UpliftVanGridTestFactory.Create();
 
             // Call
-            TestDelegate test = () => new UpliftVanSlipPlane(grid, null, 0, 0, 0, 0);
+            TestDelegate test = () => new UpliftVanSlipPlane(grid, null, 0, 0, 0);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(test);
@@ -132,13 +130,12 @@
             double tangentZTop = random.NextDouble();
             double tangentZBottom = random.NextDouble();
             int tangentLineNumber = random.Next();
-            double maxSpacingBetweenBoundaries = random.NextDouble();
 
             UpliftVanGrid leftGrid = UpliftVanGridTestFactory.Create();
             UpliftVanGrid rightGrid = UpliftVanGridTestFactory.Create();
 
             // Call
-            var slipPlane = new UpliftVanSlipPlane(leftGrid, rightGrid, tangentZTop, tangentZBottom, tangentLineNumber, maxSpacingBetweenBoundaries);
+            var slipPlane = new UpliftVanSlipPlane(leftGrid, rightGrid, tangentZTop, tangentZBottom, tangentLineNumber);
 
             // Assert
             Assert.IsFalse(slipPlane.GridAutomaticDetermined);
@@ -148,7 +145,6 @@
             Assert.AreEqual(tangentZTop, slipPlane.TangentZTop);
             Assert.AreEqual(tangentZBottom, slipPlane.TangentZBottom);
             Assert.AreEqual(tangentLineNumber, slipPlane.TangentLineNumber);
-            Assert.AreEqual(maxSpacingBetweenBoundaries, slipPlane.MaxSpacingBetweenBoundaries);
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Creators/Input/SlipPlaneUpliftVanCreatorTest.cs
===================================================================
diff -u -r55f1926dba5945d7b2ef8adabb2ba3c8ad6c21ce -r566943640717a91ff377a58a341bbbe1bcd2e516
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Creators/Input/SlipPlaneUpliftVanCreatorTest.cs	(.../SlipPlaneUpliftVanCreatorTest.cs)	(revision 55f1926dba5945d7b2ef8adabb2ba3c8ad6c21ce)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.KernelWrapper.Test/Creators/Input/SlipPlaneUpliftVanCreatorTest.cs	(.../SlipPlaneUpliftVanCreatorTest.cs)	(revision 566943640717a91ff377a58a341bbbe1bcd2e516)
@@ -63,11 +63,10 @@
             double tangentLineZTop = random.NextDouble();
             double tangentLineZBottom = random.NextDouble();
             int tangentLineNumber = random.Next();
-            double maxSpacingBetweenBoundaries = random.NextDouble();
 
             var leftGrid = new UpliftVanGrid(leftGridXLeft, leftGridXRight, leftGridZTop, leftGridZBottom, leftGridXNumber, leftGridZNumber);
             var rightGrid = new UpliftVanGrid(rightGridXLeft, rightGridXRight, rightGridZTop, rightGridZBottom, rightGridXNumber, rightGridZNumber);
-            var slipPlane = new UpliftVanSlipPlane(leftGrid, rightGrid, tangentLineZTop, tangentLineZBottom, tangentLineNumber, maxSpacingBetweenBoundaries);
+            var slipPlane = new UpliftVanSlipPlane(leftGrid, rightGrid, tangentLineZTop, tangentLineZBottom, tangentLineNumber);
 
             // Call
             SlipPlaneUpliftVan slipPlaneUpliftVan = SlipPlaneUpliftVanCreator.Create(slipPlane);
@@ -92,8 +91,8 @@
             Assert.AreEqual(tangentLineZTop, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineZTop);
             Assert.AreEqual(tangentLineZBottom, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineZBottom);
             Assert.AreEqual(tangentLineNumber, slipPlaneUpliftVan.SlipPlaneTangentLine.TangentLineNumber);
-            Assert.AreEqual(maxSpacingBetweenBoundaries, slipPlaneUpliftVan.SlipPlaneTangentLine.MaxSpacingBetweenBoundaries);
             Assert.AreSame(slipPlaneUpliftVan, slipPlaneUpliftVan.SlipCircleTangentLine.TangentLinesBoundaries); // Automatically synced
+            Assert.AreEqual(10, slipPlaneUpliftVan.SlipPlaneTangentLine.MaxSpacingBetweenBoundaries); // Only used in case of auto grid determination combined with specified tangent lines (unsupported by calculator)
         }
 
         [Test]
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/Converters/UpliftVanSlipPlaneConverterTest.cs
===================================================================
diff -u -r55f1926dba5945d7b2ef8adabb2ba3c8ad6c21ce -r566943640717a91ff377a58a341bbbe1bcd2e516
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/Converters/UpliftVanSlipPlaneConverterTest.cs	(.../UpliftVanSlipPlaneConverterTest.cs)	(revision 55f1926dba5945d7b2ef8adabb2ba3c8ad6c21ce)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/Converters/UpliftVanSlipPlaneConverterTest.cs	(.../UpliftVanSlipPlaneConverterTest.cs)	(revision 566943640717a91ff377a58a341bbbe1bcd2e516)
@@ -71,7 +71,6 @@
             Assert.IsNaN(slipPlane.TangentZTop);
             Assert.IsNaN(slipPlane.TangentZBottom);
             Assert.AreEqual(0, slipPlane.TangentLineNumber);
-            Assert.IsNaN(slipPlane.MaxSpacingBetweenBoundaries);
         }
 
         [Test]
@@ -116,7 +115,6 @@
             Assert.IsNaN(slipPlane.TangentZTop);
             Assert.IsNaN(slipPlane.TangentZBottom);
             Assert.AreEqual(0, slipPlane.TangentLineNumber);
-            Assert.IsNaN(slipPlane.MaxSpacingBetweenBoundaries);
         }
 
         [Test]
@@ -161,7 +159,6 @@
             Assert.AreEqual(input.TangentLineZTop, slipPlane.TangentZTop);
             Assert.AreEqual(input.TangentLineZBottom, slipPlane.TangentZBottom);
             Assert.AreEqual(1, slipPlane.TangentLineNumber);
-            Assert.AreEqual(10, slipPlane.MaxSpacingBetweenBoundaries);
         }
 
         private static void AssertGrid(MacroStabilityInwardsGrid expectedGrid, UpliftVanGrid actualGrid)
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/MacroStabilityInwardsCalculationServiceTest.cs
===================================================================
diff -u -r0b660ff4f3aeb4be02ae4c5ea42813c28aeae8fe -r566943640717a91ff377a58a341bbbe1bcd2e516
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/MacroStabilityInwardsCalculationServiceTest.cs	(.../MacroStabilityInwardsCalculationServiceTest.cs)	(revision 0b660ff4f3aeb4be02ae4c5ea42813c28aeae8fe)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/MacroStabilityInwardsCalculationServiceTest.cs	(.../MacroStabilityInwardsCalculationServiceTest.cs)	(revision 566943640717a91ff377a58a341bbbe1bcd2e516)
@@ -657,7 +657,6 @@
             Assert.AreEqual(originalInput.TangentLineZTop, actualInput.TangentZTop);
             Assert.AreEqual(originalInput.TangentLineZBottom, actualInput.TangentZBottom);
             Assert.AreEqual(1, actualInput.TangentLineNumber);
-            Assert.AreEqual(10, actualInput.MaxSpacingBetweenBoundaries);
         }
 
         private static void AssertOutput(UpliftVanCalculatorResult expectedOutput, MacroStabilityInwardsOutput actualOutput)