Index: Core/Components/src/Core.Components.DotSpatial/Converter/MapDataFactory.cs
===================================================================
diff -u -ra3c8c0cb4384de51a18d77cc7bea487f97ba21e1 -r295f682376c0fdfe225ce196a5d654964a3c81bd
--- Core/Components/src/Core.Components.DotSpatial/Converter/MapDataFactory.cs	(.../MapDataFactory.cs)	(revision a3c8c0cb4384de51a18d77cc7bea487f97ba21e1)
+++ Core/Components/src/Core.Components.DotSpatial/Converter/MapDataFactory.cs	(.../MapDataFactory.cs)	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -42,6 +42,7 @@
             new MapDataCollectionConverter(),
             new MapPointDataConverter(),
             new MapLineDataConverter(),
+            new MapMultiLineDataConverter(),
             new MapPolygonDataConverter()
         };
 
Index: Core/Components/src/Core.Components.DotSpatial/Converter/MapMultiLineDataConverter.cs
===================================================================
diff -u
--- Core/Components/src/Core.Components.DotSpatial/Converter/MapMultiLineDataConverter.cs	(revision 0)
+++ Core/Components/src/Core.Components.DotSpatial/Converter/MapMultiLineDataConverter.cs	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -0,0 +1,54 @@
+// Copyright (C) Stichting Deltares 2016. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System.Collections.Generic;
+using System.Linq;
+using Core.Common.Base.Geometry;
+using Core.Components.Gis.Data;
+using DotSpatial.Data;
+using DotSpatial.Topology;
+
+namespace Core.Components.DotSpatial.Converter
+{
+    /// <summary>
+    /// The converter that converts <see cref="MapMultiLineData"/> into a <see cref="FeatureSet"/> containing multiple <see cref="LineString"/>.
+    /// </summary>
+    public class MapMultiLineDataConverter : MapDataConverter<MapMultiLineData>
+    {
+        protected override IList<FeatureSet> Convert(MapMultiLineData data)
+        {
+            var featureSet = new FeatureSet(FeatureType.Line);
+
+            foreach (IEnumerable<Point2D> line in data.Lines)
+            {
+                var coordinates = line.Select(p => new Coordinate(p.X, p.Y));
+                var lineString = new LineString(coordinates);
+
+                featureSet.Features.Add(lineString);
+            }
+
+            return new List<FeatureSet>
+            {
+                featureSet
+            };
+        }
+    }
+}
\ No newline at end of file
Index: Core/Components/src/Core.Components.DotSpatial/Core.Components.DotSpatial.csproj
===================================================================
diff -u -r33c64ea2cd6b287bf5954e63a548d89dadb7f153 -r295f682376c0fdfe225ce196a5d654964a3c81bd
--- Core/Components/src/Core.Components.DotSpatial/Core.Components.DotSpatial.csproj	(.../Core.Components.DotSpatial.csproj)	(revision 33c64ea2cd6b287bf5954e63a548d89dadb7f153)
+++ Core/Components/src/Core.Components.DotSpatial/Core.Components.DotSpatial.csproj	(.../Core.Components.DotSpatial.csproj)	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -64,6 +64,7 @@
     <Compile Include="Converter\MapDataConverter.cs" />
     <Compile Include="Converter\MapDataFactory.cs" />
     <Compile Include="Converter\MapLineDataConverter.cs" />
+    <Compile Include="Converter\MapMultiLineDataConverter.cs" />
     <Compile Include="Converter\MapPointDataConverter.cs" />
     <Compile Include="Converter\MapPolygonDataConverter.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
Index: Core/Components/src/Core.Components.Gis/Core.Components.Gis.csproj
===================================================================
diff -u -r33c64ea2cd6b287bf5954e63a548d89dadb7f153 -r295f682376c0fdfe225ce196a5d654964a3c81bd
--- Core/Components/src/Core.Components.Gis/Core.Components.Gis.csproj	(.../Core.Components.Gis.csproj)	(revision 33c64ea2cd6b287bf5954e63a548d89dadb7f153)
+++ Core/Components/src/Core.Components.Gis/Core.Components.Gis.csproj	(.../Core.Components.Gis.csproj)	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -44,6 +44,7 @@
     <Compile Include="Data\MapData.cs" />
     <Compile Include="Data\MapDataCollection.cs" />
     <Compile Include="Data\MapLineData.cs" />
+    <Compile Include="Data\MapMultiLineData.cs" />
     <Compile Include="Data\MapPointData.cs" />
     <Compile Include="Data\MapPolygonData.cs" />
     <Compile Include="Data\PointBasedMapData.cs" />
Index: Core/Components/src/Core.Components.Gis/Data/MapLineData.cs
===================================================================
diff -u -r33c64ea2cd6b287bf5954e63a548d89dadb7f153 -r295f682376c0fdfe225ce196a5d654964a3c81bd
--- Core/Components/src/Core.Components.Gis/Data/MapLineData.cs	(.../MapLineData.cs)	(revision 33c64ea2cd6b287bf5954e63a548d89dadb7f153)
+++ Core/Components/src/Core.Components.Gis/Data/MapLineData.cs	(.../MapLineData.cs)	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -33,7 +33,7 @@
         /// <summary>
         /// Creates a new instance of <see cref="MapLineData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Point2D"/> which describes a line in 2D space.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public MapLineData(IEnumerable<Point2D> points) : base(points)
         {
Index: Core/Components/src/Core.Components.Gis/Data/MapMultiLineData.cs
===================================================================
diff -u
--- Core/Components/src/Core.Components.Gis/Data/MapMultiLineData.cs	(revision 0)
+++ Core/Components/src/Core.Components.Gis/Data/MapMultiLineData.cs	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -0,0 +1,54 @@
+// Copyright (C) Stichting Deltares 2016. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Core.Common.Base.Geometry;
+
+namespace Core.Components.Gis.Data
+{
+    /// <summary>
+    /// This class represents data in 2D space which is visible as a line.
+    /// </summary>
+    public class MapMultiLineData : MapData
+    {
+        /// <summary>
+        /// Creates a new instance of <see cref="MapLineData"/>.
+        /// </summary>
+        /// <param name="lines">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) lines.</param>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="lines"/> is <c>null</c>.</exception>
+        public MapMultiLineData(IEnumerable<IEnumerable<Point2D>> lines)
+        {
+            if (lines == null)
+            {
+                var message = String.Format("A point collection is required when creating a subclass of {0}.", typeof(PointBasedMapData));
+                throw new ArgumentNullException("lines", message);
+            }
+            Lines = lines.ToArray();
+        }
+
+        /// <summary>
+        /// Gets all the lines in the multi line data
+        /// </summary>
+        public IEnumerable<Point2D>[] Lines { get; private set; }
+    }
+}
\ No newline at end of file
Index: Core/Components/src/Core.Components.Gis/Data/MapPointData.cs
===================================================================
diff -u -r33c64ea2cd6b287bf5954e63a548d89dadb7f153 -r295f682376c0fdfe225ce196a5d654964a3c81bd
--- Core/Components/src/Core.Components.Gis/Data/MapPointData.cs	(.../MapPointData.cs)	(revision 33c64ea2cd6b287bf5954e63a548d89dadb7f153)
+++ Core/Components/src/Core.Components.Gis/Data/MapPointData.cs	(.../MapPointData.cs)	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -33,7 +33,7 @@
         /// <summary>
         /// Create a new instance of <see cref="MapPointData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) coordinates.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Point2D"/> which describes points in 2D space.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public MapPointData(IEnumerable<Point2D> points) : base(points) {}
     }
Index: Core/Components/src/Core.Components.Gis/Data/MapPolygonData.cs
===================================================================
diff -u -r33c64ea2cd6b287bf5954e63a548d89dadb7f153 -r295f682376c0fdfe225ce196a5d654964a3c81bd
--- Core/Components/src/Core.Components.Gis/Data/MapPolygonData.cs	(.../MapPolygonData.cs)	(revision 33c64ea2cd6b287bf5954e63a548d89dadb7f153)
+++ Core/Components/src/Core.Components.Gis/Data/MapPolygonData.cs	(.../MapPolygonData.cs)	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -33,7 +33,7 @@
         /// <summary>
         /// Creates a new instance of <see cref="MapPolygonData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) points.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Point2D"/> which describes a closed area in 2D space.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         public MapPolygonData(IEnumerable<Point2D> points) : base(points) {}
     }
Index: Core/Components/src/Core.Components.Gis/Data/PointBasedMapData.cs
===================================================================
diff -u -r33c64ea2cd6b287bf5954e63a548d89dadb7f153 -r295f682376c0fdfe225ce196a5d654964a3c81bd
--- Core/Components/src/Core.Components.Gis/Data/PointBasedMapData.cs	(.../PointBasedMapData.cs)	(revision 33c64ea2cd6b287bf5954e63a548d89dadb7f153)
+++ Core/Components/src/Core.Components.Gis/Data/PointBasedMapData.cs	(.../PointBasedMapData.cs)	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -34,7 +34,7 @@
         /// <summary>
         /// Create a new instance of <see cref="PointBasedMapData"/>.
         /// </summary>
-        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Tuple{T1,T2}"/> as (X,Y) coordinates.</param>
+        /// <param name="points">A <see cref="IEnumerable{T}"/> of <see cref="Point2D"/> which describe locations in 2D space.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="points"/> is <c>null</c>.</exception>
         protected PointBasedMapData(IEnumerable<Point2D> points)
         {
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs
===================================================================
diff -u -rf98cc7191a717793f69485dad2923cd34f6d48de -r295f682376c0fdfe225ce196a5d654964a3c81bd
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs	(.../PipingFailureMechanism.cs)	(revision f98cc7191a717793f69485dad2923cd34f6d48de)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingFailureMechanism.cs	(.../PipingFailureMechanism.cs)	(revision 295f682376c0fdfe225ce196a5d654964a3c81bd)
@@ -58,12 +58,12 @@
         /// <summary>
         /// Gets the available <see cref="RingtoetsPipingSurfaceLine"/> within the scope of the piping failure mechanism.
         /// </summary>
-        public IEnumerable<RingtoetsPipingSurfaceLine> SurfaceLines { get; private set; }
+        public ICollection<RingtoetsPipingSurfaceLine> SurfaceLines { get; private set; }
 
         /// <summary>
         /// Gets the available profiles within the scope of the piping failure mechanism.
         /// </summary>
-        public IEnumerable<PipingSoilProfile> SoilProfiles { get; private set; }
+        public ICollection<PipingSoilProfile> SoilProfiles { get; private set; }
 
         /// <summary>
         /// Gets the boundary conditions applying to the piping failure mechanism.