diff --git a/src/main/java/seng302/server/simulator/GeoUtility.java b/src/main/java/seng302/server/simulator/GeoUtility.java
index a93be4b3..288e0ee1 100644
--- a/src/main/java/seng302/server/simulator/GeoUtility.java
+++ b/src/main/java/seng302/server/simulator/GeoUtility.java
@@ -1,12 +1,11 @@
 package seng302.server.simulator;
 
-import javafx.geometry.Pos;
-import seng302.server.simulator.mark.Mark;
 import seng302.server.simulator.mark.Position;
 
 public class GeoUtility {
 
 	private static double EARTH_RADIUS = 6378.137;
+
 	/**
 	 * Calculates the euclidean distance between two markers on the canvas using xy coordinates
 	 *
@@ -14,7 +13,7 @@ public class GeoUtility {
 	 * @param p2 second geographical position
 	 * @return the distance in meter between two points in meters
 	 */
-	public static Double calculateMarkerDistance(Position p1, Position p2) {
+	public static Double getDistance(Position p1, Position p2) {
 
 		double dLat = Math.toRadians(p2.getLat() - p1.getLat());
 		double dLon = Math.toRadians(p2.getLng() - p1.getLng());
@@ -35,7 +34,7 @@ public class GeoUtility {
 	 * @param p1 the first geographical position, start point
 	 * @param p2 the second geographical position, end point
 	 * @return the bearing in degree from p1 to p2, value range (0 ~ 360 deg.).
-	 *      vertical up is 0 deg. horizontal right is 90 deg.
+	 * vertical up is 0 deg. horizontal right is 90 deg.
 	 */
 	public static Double getBearing(Position p1, Position p2) {
 
@@ -53,8 +52,9 @@ public class GeoUtility {
 	/**
 	 * Given an existing point in lat/lng, distance in (in meter) and bearing
 	 * (in degrees), calculates the new lat/lng.
-	 * @param origin the original position within lat / lng
-	 * @param bearing the bearing in degree, from original position to the new position
+	 *
+	 * @param origin   the original position within lat / lng
+	 * @param bearing  the bearing in degree, from original position to the new position
 	 * @param distance the distance in meter, from original position to the new position
 	 * @return the new position
 	 */
diff --git a/src/main/java/seng302/server/simulator/mark/Corner.java b/src/main/java/seng302/server/simulator/mark/Corner.java
index 70f231b5..136212f2 100644
--- a/src/main/java/seng302/server/simulator/mark/Corner.java
+++ b/src/main/java/seng302/server/simulator/mark/Corner.java
@@ -8,6 +8,10 @@ public class Corner {
 	private RoundingType roundingType;
 	private int zoneSize; // size of the zone around a mark in boat-lengths.
 
+	// TODO: this shouldn't be used in the future!!!!
+	private double bearingToNextCorner, distanceToNextCorner;
+	private Corner nextCorner;
+
 	public Corner(int seqID, CompoundMark compoundMark, RoundingType roundingType, int zoneSize) {
 		this.seqID = seqID;
 		this.compoundMark = compoundMark;
@@ -56,4 +60,30 @@ public class Corner {
 	public void setZoneSize(int zoneSize) {
 		this.zoneSize = zoneSize;
 	}
+
+
+	// TODO: next six setters & getters shouldn't be used in the future.
+	public double getBearingToNextCorner() {
+		return bearingToNextCorner;
+	}
+
+	public void setBearingToNextCorner(double bearingToNextCorner) {
+		this.bearingToNextCorner = bearingToNextCorner;
+	}
+
+	public double getDistanceToNextCorner() {
+		return distanceToNextCorner;
+	}
+
+	public void setDistanceToNextCorner(double distanceToNextCorner) {
+		this.distanceToNextCorner = distanceToNextCorner;
+	}
+
+	public Corner getNextCorner() {
+		return nextCorner;
+	}
+
+	public void setNextCorner(Corner nextCorner) {
+		this.nextCorner = nextCorner;
+	}
 }
diff --git a/src/main/java/seng302/server/simulator/mark/Mark.java b/src/main/java/seng302/server/simulator/mark/Mark.java
index 0dd2d761..41f00bb6 100644
--- a/src/main/java/seng302/server/simulator/mark/Mark.java
+++ b/src/main/java/seng302/server/simulator/mark/Mark.java
@@ -4,18 +4,16 @@ package seng302.server.simulator.mark;
  * An abstract class to represent general marks
  * Created by Haoming Yin (hyi25) on 17/3/17.
  */
-public class Mark {
+public class Mark extends Position {
 
     private int seqID;
     private String name;
-    private double lat;
-    private double lng;
-    //private int sourceID;
+    private int sourceID;
 
-    public Mark(String name, double lat, double lng) {
+    public Mark(String name, double lat, double lng, int sourceID) {
+        super(lat, lng);
         this.name = name;
-        this.lat = lat;
-        this.lng = lng;
+        this.sourceID = sourceID;
     }
 
     /**
@@ -24,7 +22,7 @@ public class Mark {
      */
     @Override
     public String toString() {
-        return String.format("Mark: %d (%s), lat: %f, lng: %f", seqID, name, lat, lng);
+        return String.format("Mark%d: %s, source: %d, lat: %f, lng: %f", seqID, name, sourceID, lat, lng);
     }
 
     public int getSeqID() {
@@ -43,20 +41,12 @@ public class Mark {
         this.name = name;
     }
 
-    public double getLat() {
-        return lat;
+    public int getSourceID() {
+        return sourceID;
     }
 
-    public void setLat(double lat) {
-        this.lat = lat;
-    }
-
-    public double getLng() {
-        return lng;
-    }
-
-    public void setLng(double lng) {
-        this.lng = lng;
+    public void setSourceID(int sourceID) {
+        this.sourceID = sourceID;
     }
 }
 
diff --git a/src/main/java/seng302/server/simulator/mark/Position.java b/src/main/java/seng302/server/simulator/mark/Position.java
new file mode 100644
index 00000000..74200e9d
--- /dev/null
+++ b/src/main/java/seng302/server/simulator/mark/Position.java
@@ -0,0 +1,31 @@
+package seng302.server.simulator.mark;
+
+public class Position {
+
+	double lat, lng;
+
+	public Position(double lat, double lng) {
+		this.lat = lat;
+		this.lng = lng;
+	}
+
+	public String toString() {
+		return String.format("Position at lat:%f lng:%f.", lat, lng);
+	}
+
+	public double getLat() {
+		return lat;
+	}
+
+	public void setLat(double lat) {
+		this.lat = lat;
+	}
+
+	public double getLng() {
+		return lng;
+	}
+
+	public void setLng(double lng) {
+		this.lng = lng;
+	}
+}
diff --git a/src/main/java/seng302/server/simulator/parsers/CourseParser.java b/src/main/java/seng302/server/simulator/parsers/CourseParser.java
index d055f88e..f7be46cd 100644
--- a/src/main/java/seng302/server/simulator/parsers/CourseParser.java
+++ b/src/main/java/seng302/server/simulator/parsers/CourseParser.java
@@ -29,7 +29,7 @@ public class CourseParser extends FileParser {
 	}
 
 	// TODO: should handle error / invalid file gracefully
-	public List<Corner> getCourse() {
+	protected List<Corner> getCourse() {
 		compoundMarksMap = getCompoundMarks(doc.getDocumentElement());
 		List<Corner> corners = new ArrayList<>();
 		NodeList cMarksSequence = doc.getElementsByTagName("Corner");
@@ -104,8 +104,9 @@ public class CourseParser extends FileParser {
 			String name = e.getAttribute("Name");
 			Double lat = Double.valueOf(e.getAttribute("TargetLat"));
 			Double lng = Double.valueOf(e.getAttribute("TargetLng"));
+			Integer sourceId = Integer.valueOf(e.getAttribute("SourceID"));
 
-			Mark mark = new Mark(name, lat, lng);
+			Mark mark = new Mark(name, lat, lng, sourceId);
 			mark.setSeqID(seqId);
 
 			return mark;