diff --git a/src/main/java/seng302/server/simulator/mark/CompoundMark.java b/src/main/java/seng302/server/simulator/mark/CompoundMark.java
new file mode 100644
index 00000000..59dc1f62
--- /dev/null
+++ b/src/main/java/seng302/server/simulator/mark/CompoundMark.java
@@ -0,0 +1,57 @@
+package seng302.server.simulator.mark;
+
+public class CompoundMark {
+
+	private int markID;
+	private String name;
+
+	private Mark mark1;
+	private Mark mark2;
+
+	public CompoundMark(int markID, String name) {
+		this.markID = markID;
+		this.name = name;
+	}
+
+	public void addMark(int seqId, Mark mark) {
+		if (seqId == 1) {
+			setMark1(mark);
+		} else if (seqId == 2) {
+			setMark2(mark);
+		}
+	}
+
+	public int getMarkID() {
+		return markID;
+	}
+
+	public void setMarkID(int markID) {
+		this.markID = markID;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public Mark getMark1() {
+		return mark1;
+	}
+
+	public void setMark1(Mark mark1) {
+		this.mark1 = mark1;
+		mark1.setSeqID(1);
+	}
+
+	public Mark getMark2() {
+		return mark2;
+	}
+
+	public void setMark2(Mark mark2) {
+		this.mark2 = mark2;
+		mark2.setSeqID(2);
+	}
+}
diff --git a/src/main/java/seng302/server/simulator/mark/Corner.java b/src/main/java/seng302/server/simulator/mark/Corner.java
new file mode 100644
index 00000000..98b4828d
--- /dev/null
+++ b/src/main/java/seng302/server/simulator/mark/Corner.java
@@ -0,0 +1,49 @@
+package seng302.server.simulator.mark;
+
+public class Corner {
+
+	private int seqID;
+	private CompoundMark compoundMark;
+	//private int CompoundMarkID;
+	private RoundingType roundingType;
+	private int zoneSize; // size of the zone around a mark in boat-lengths.
+
+	public Corner(int seqID, CompoundMark compoundMark, RoundingType roundingType, int zoneSize) {
+		this.seqID = seqID;
+		this.compoundMark = compoundMark;
+		this.roundingType = roundingType;
+		this.zoneSize = zoneSize;
+	}
+
+	public int getSeqID() {
+		return seqID;
+	}
+
+	public void setSeqID(int seqID) {
+		this.seqID = seqID;
+	}
+
+	public CompoundMark getCompoundMark() {
+		return compoundMark;
+	}
+
+	public void setCompoundMark(CompoundMark compoundMark) {
+		this.compoundMark = compoundMark;
+	}
+
+	public RoundingType getRoundingType() {
+		return roundingType;
+	}
+
+	public void setRoundingType(RoundingType roundingType) {
+		this.roundingType = roundingType;
+	}
+
+	public int getZoneSize() {
+		return zoneSize;
+	}
+
+	public void setZoneSize(int zoneSize) {
+		this.zoneSize = zoneSize;
+	}
+}
diff --git a/src/main/java/seng302/server/simulator/mark/Mark.java b/src/main/java/seng302/server/simulator/mark/Mark.java
new file mode 100644
index 00000000..edcac047
--- /dev/null
+++ b/src/main/java/seng302/server/simulator/mark/Mark.java
@@ -0,0 +1,54 @@
+package seng302.server.simulator.mark;
+
+/**
+ * An abstract class to represent general marks
+ * Created by Haoming Yin (hyi25) on 17/3/17.
+ */
+public class Mark {
+
+    private int seqID;
+    private String name;
+    private double lat;
+    private double lng;
+    //private int sourceID;
+
+    public Mark(String name, double lat, double lng) {
+        this.name = name;
+        this.lat = lat;
+        this.lng = lng;
+    }
+
+    public int getSeqID() {
+        return seqID;
+    }
+
+    public void setSeqID(int seqID) {
+        this.seqID = seqID;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    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/mark/RoundingType.java b/src/main/java/seng302/server/simulator/mark/RoundingType.java
new file mode 100644
index 00000000..63fae504
--- /dev/null
+++ b/src/main/java/seng302/server/simulator/mark/RoundingType.java
@@ -0,0 +1,28 @@
+package seng302.server.simulator.mark;
+
+public enum RoundingType{
+
+	// the mark should be rounded to port (boat's left)
+	PORT("PS"),
+
+	// the mark should be rounded to starboard (boat's right)
+	STARBOARD("Stbd"),
+
+	// the boat within the compound mark with the SeqID of 1 should be rounded
+	// to starboard and the boat within the compound mark with the SeqID of 2
+	// should be rounded to port.
+	SP("SP"),
+
+	// the opposite of SP
+	PS("PS");
+
+	private String type;
+
+	RoundingType(String type) {
+		this.type = type;
+	}
+
+	public String getType() {
+		return this.type;
+	}
+}