Index: Ringtoets/Integration/src/Ringtoets.Integration.IO/Helpers/ExportableFailureMechanismSectionHelper.cs
===================================================================
diff -u -r16a1f79533ceabeb1b4c6ed00fd7bc1e604dbfa9 -r71d46474dec24e87a9a6d45152b0b29977d1a51e
--- Ringtoets/Integration/src/Ringtoets.Integration.IO/Helpers/ExportableFailureMechanismSectionHelper.cs	(.../ExportableFailureMechanismSectionHelper.cs)	(revision 16a1f79533ceabeb1b4c6ed00fd7bc1e604dbfa9)
+++ Ringtoets/Integration/src/Ringtoets.Integration.IO/Helpers/ExportableFailureMechanismSectionHelper.cs	(.../ExportableFailureMechanismSectionHelper.cs)	(revision 71d46474dec24e87a9a6d45152b0b29977d1a51e)
@@ -21,6 +21,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Core.Common.Base.Geometry;
 using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.FailureMechanism;
@@ -74,7 +75,35 @@
                 throw new ArgumentNullException(nameof(referenceLine));
             }
 
-            return null;
+            Point2D[] referenceLinePoints = referenceLine.Points.ToArray();
+            Point2D startPoint = referenceLinePoints[0];
+            var sectionPoints = new List<Point2D>();
+
+            if (sectionStart == 0)
+            {
+                sectionPoints.Add(startPoint);
+            }
+
+            int sectionLength = sectionEnd - sectionStart;
+            double sectionLengthOnReferenceLine = 0;
+
+            for (int i = 1; i < referenceLinePoints.Length; i++)
+            {
+                double pointLength = Math2D.Length(new[]
+                {
+                    referenceLinePoints[i - 1],
+                    referenceLinePoints[i]
+                });
+
+                sectionLengthOnReferenceLine = sectionLengthOnReferenceLine + pointLength;
+
+                if (sectionLength >= sectionLengthOnReferenceLine)
+                {
+                    sectionPoints.Add(referenceLinePoints[i]);
+                }
+            }
+
+            return sectionPoints;
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Helpers/ExportableFailureMechanismSectionHelperTest.cs
===================================================================
diff -u -r16a1f79533ceabeb1b4c6ed00fd7bc1e604dbfa9 -r71d46474dec24e87a9a6d45152b0b29977d1a51e
--- Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Helpers/ExportableFailureMechanismSectionHelperTest.cs	(.../ExportableFailureMechanismSectionHelperTest.cs)	(revision 16a1f79533ceabeb1b4c6ed00fd7bc1e604dbfa9)
+++ Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Helpers/ExportableFailureMechanismSectionHelperTest.cs	(.../ExportableFailureMechanismSectionHelperTest.cs)	(revision 71d46474dec24e87a9a6d45152b0b29977d1a51e)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
+using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Integration.IO.Assembly;
 using Ringtoets.Integration.IO.Helpers;
@@ -103,5 +104,27 @@
             var exception = Assert.Throws<ArgumentNullException>(call);
             Assert.AreEqual("referenceLine", exception.ParamName);
         }
+
+        [Test]
+        public void GetFailureMechanismSectionGeometry_SectionStartZeroAndEndExactlyOnConsecutiveReferenceLinePoints_ReturnExpectedPoints()
+        {
+            // Setup
+            const int sectionStart = 0;
+            const int sectionEnd = 10;
+            var points = new[]
+            {
+                new Point2D(sectionStart, 0),
+                new Point2D(sectionEnd, 0)
+            };
+
+            var referenceLine = new ReferenceLine();
+            referenceLine.SetGeometry(points);
+
+            // Call
+            IEnumerable<Point2D> sectionPoints = ExportableFailureMechanismSectionHelper.GetFailureMechanismSectionGeometry(referenceLine, sectionStart, sectionEnd);
+
+            // Assert
+            CollectionAssert.AreEqual(points, sectionPoints);
+        }
     }
 }
\ No newline at end of file