diff --git a/src/main/java/seng302/gameServer/GameState.java b/src/main/java/seng302/gameServer/GameState.java
index eab39d9a..961eb415 100644
--- a/src/main/java/seng302/gameServer/GameState.java
+++ b/src/main/java/seng302/gameServer/GameState.java
@@ -9,12 +9,12 @@ import java.util.Map;
 import java.util.Random;
 import java.util.Set;
 import javafx.scene.paint.Color;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.w3c.dom.Document;
 import org.xml.sax.InputSource;
-import seng302.gameServer.messages.*;
-import seng302.model.*;
 import seng302.gameServer.messages.BoatAction;
 import seng302.gameServer.messages.BoatStatus;
 import seng302.gameServer.messages.ChatterMessage;
@@ -38,10 +38,6 @@ import seng302.model.token.TokenType;
 import seng302.utilities.GeoUtility;
 import seng302.utilities.XMLParser;
 
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import java.util.*;
-
 /**
  * A Static class to hold information about the current state of the game (model)
  * Also contains logic for updating itself on regular time intervals on its own thread
@@ -77,6 +73,7 @@ public class GameState implements Runnable {
     private static Double speedMultiplier = 1d;
 
     private static Boolean customizationFlag; // dirty flag to tell if a player has customized their boat.
+    private static Boolean playerHasLeftFlag;
 
     private static String hostIpAddress;
     private static List<Player> players;
@@ -106,6 +103,7 @@ public class GameState implements Runnable {
         players = new ArrayList<>();
         GameState.hostIpAddress = hostIpAddress;
         customizationFlag = false;
+        playerHasLeftFlag = false;
         speedMultiplier = 1.0;
         currentStage = GameStages.LOBBYING;
         isRaceStarted = false;
@@ -839,6 +837,14 @@ public class GameState implements Runnable {
         customizationFlag = false;
     }
 
+    public static void setPlayerHasLeftFlag(Boolean flag) {
+        playerHasLeftFlag = flag;
+    }
+
+    public static Boolean getPlayerHasLeftFlag() {
+        return playerHasLeftFlag;
+    }
+
     public static Integer getNumberOfPlayers(){
         Integer numPlayers = 1;
 
diff --git a/src/main/java/seng302/gameServer/MainServerThread.java b/src/main/java/seng302/gameServer/MainServerThread.java
index d15eea08..a5eef1f0 100644
--- a/src/main/java/seng302/gameServer/MainServerThread.java
+++ b/src/main/java/seng302/gameServer/MainServerThread.java
@@ -1,5 +1,15 @@
 package seng302.gameServer;
 
+import java.io.IOException;
+import java.io.StringReader;
+import java.net.ServerSocket;
+import java.util.ArrayList;
+import java.util.Random;
+import java.util.Timer;
+import java.util.TimerTask;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.w3c.dom.Document;
@@ -16,17 +26,6 @@ import seng302.utilities.GeoUtility;
 import seng302.utilities.XMLGenerator;
 import seng302.utilities.XMLParser;
 
-import javax.xml.parsers.DocumentBuilder;
-import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
-import java.io.IOException;
-import java.io.StringReader;
-import java.net.ServerSocket;
-import java.util.ArrayList;
-import java.util.Random;
-import java.util.Timer;
-import java.util.TimerTask;
-
 /**
  * A class describing the overall server, which creates and collects server threads for each client
  * Created by wmu16 on 13/07/17.
@@ -115,6 +114,20 @@ public class MainServerThread implements Runnable, ClientConnectionDelegate {
 
         //You should handle interrupts in some way, so that the thread won't keep on forever if you exit the app.
         while (!terminated) {
+            if (GameState.getPlayerHasLeftFlag()) {
+                for (ServerToClientThread stc : serverToClientThreads) {
+                    if (!stc.isSocketOpen()) {
+                        GameState.getYachts().remove(stc.getSourceId());
+                        sendSetupMessages();
+                        try {
+                            stc.getSocket().close();
+                        } catch (IOException e) {
+                            e.printStackTrace();
+                        }
+                    }
+                }
+                GameState.setPlayerHasLeftFlag(false);
+            }
             try {
                 Thread.sleep(1000 / CLIENT_UPDATES_PER_SECOND);
             } catch (InterruptedException e) {
diff --git a/src/main/java/seng302/gameServer/ServerToClientThread.java b/src/main/java/seng302/gameServer/ServerToClientThread.java
index 4a2bd158..524944da 100644
--- a/src/main/java/seng302/gameServer/ServerToClientThread.java
+++ b/src/main/java/seng302/gameServer/ServerToClientThread.java
@@ -1,17 +1,12 @@
 package seng302.gameServer;
 
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import seng302.gameServer.messages.*;
-import seng302.model.Player;
-import seng302.model.ServerYacht;
-import seng302.model.stream.packets.PacketType;
-import seng302.model.stream.packets.StreamPacket;
-import seng302.model.stream.xml.generator.RaceXMLTemplate;
-import seng302.utilities.XMLGenerator;
-
-import java.io.*;
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
 import java.net.Socket;
 import java.net.SocketException;
 import java.util.ArrayList;
@@ -24,7 +19,6 @@ import java.util.zip.Checksum;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import seng302.gameServer.messages.BoatAction;
-import seng302.gameServer.messages.BoatLocationMessage;
 import seng302.gameServer.messages.ChatterMessage;
 import seng302.gameServer.messages.ClientType;
 import seng302.gameServer.messages.CustomizeRequestType;
@@ -33,14 +27,11 @@ import seng302.gameServer.messages.RegistrationResponseMessage;
 import seng302.gameServer.messages.RegistrationResponseStatus;
 import seng302.gameServer.messages.XMLMessage;
 import seng302.gameServer.messages.XMLMessageSubType;
-import seng302.gameServer.messages.YachtEventCodeMessage;
 import seng302.model.Player;
 import seng302.model.ServerYacht;
 import seng302.model.stream.packets.PacketType;
 import seng302.model.stream.packets.StreamPacket;
 import seng302.model.stream.xml.generator.RaceXMLTemplate;
-import seng302.model.stream.xml.generator.RegattaXMLTemplate;
-import seng302.model.token.Token;
 import seng302.utilities.XMLGenerator;
 
 /**
@@ -104,6 +95,10 @@ public class ServerToClientThread implements Runnable {
         thread.start();
     }
 
+    public Integer getSourceId() {
+        return sourceId;
+    }
+
     private void setUpPlayer(){
         BufferedReader fn;
         String fName = "";
@@ -228,9 +223,11 @@ public class ServerToClientThread implements Runnable {
                 }
             } catch (Exception e) {
                 closeSocket();
+                GameState.setPlayerHasLeftFlag(true);
                 return;
             }
         }
+        GameState.setPlayerHasLeftFlag(true);
         logger.warn("Closed serverToClientThread" + thread, 1);
     }
 
@@ -264,6 +261,10 @@ public class ServerToClientThread implements Runnable {
         }
     }
 
+    public Boolean isSocketOpen() {
+        return !socket.isClosed();
+    }
+
     private int readByte() throws Exception {
         int currentByte = -1;
         try {