diff --git a/racevisionGame/src/main/java/mock/model/MockBoat.java b/racevisionGame/src/main/java/mock/model/MockBoat.java
index c8c6825b..05efd0cf 100644
--- a/racevisionGame/src/main/java/mock/model/MockBoat.java
+++ b/racevisionGame/src/main/java/mock/model/MockBoat.java
@@ -203,4 +203,28 @@ public class MockBoat extends Boat {
         return distanceTravelledMeters;
     }
 
+    /**
+     * Check if a mark is on the port side of the boat
+     */
+    public boolean isPortSide(Mark mark){
+        //if this boat is lower than the mark check which way it is facing
+        if(this.getCurrentPosition().getLongitude() < mark.getPosition().getLongitude()){
+            return this.getBearing().degrees() <= 180;
+        }else{
+            return this.getBearing().degrees() > 180;
+        }
+    }
+
+    /**
+     * Check if a mark is on the starboard side of the boat
+     */
+    public boolean isStarboardSide(Mark mark){
+        //if this boat is lower than the mark check which way it is facing
+        if(this.getCurrentPosition().getLongitude() < mark.getPosition().getLongitude()){
+            return this.getBearing().degrees() >= 180;
+        }else{
+            return this.getBearing().degrees() < 180;
+        }
+    }
+
 }
diff --git a/racevisionGame/src/test/java/mock/model/MockBoatTest.java b/racevisionGame/src/test/java/mock/model/MockBoatTest.java
index b1ee551c..71b8f715 100644
--- a/racevisionGame/src/test/java/mock/model/MockBoatTest.java
+++ b/racevisionGame/src/test/java/mock/model/MockBoatTest.java
@@ -1,7 +1,156 @@
 package mock.model;
 
-import static org.junit.Assert.*;
+import mock.dataInput.PolarParser;
+import mock.exceptions.InvalidPolarFileException;
+import org.junit.Before;
+import org.junit.Test;
+import shared.model.Bearing;
+import shared.model.GPSCoordinate;
+import shared.model.Mark;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 
 public class MockBoatTest {
-//TODO
+
+    /**
+     * boat made for testing
+     */
+    private MockBoat firstTestBoat;
+
+    private Mark markToTest;
+
+    private GPSCoordinate highGPS;
+    private GPSCoordinate middleGPS;
+    private GPSCoordinate lowGPS;
+
+    /**
+    * Creates the Polars object for the tests.
+    */
+    @Before
+    public void setUp() {
+        //Read in polars.
+        try {
+            //Parse data file.
+            Polars polars = PolarParser.parse("mock/polars/acc_polars.csv");
+
+            firstTestBoat = new MockBoat(1, "test", "NZ", polars);
+            highGPS = new GPSCoordinate(100, 100);
+            middleGPS = new GPSCoordinate(100, 75);
+            lowGPS = new GPSCoordinate(100, 50);
+            markToTest = new Mark(1, "test MARK", middleGPS);
+        }
+        catch (InvalidPolarFileException e) {
+            fail("Couldn't parse polar file.");
+        }
+    }
+
+    //////////////////////////////Mark Higher////////////////////////////////
+
+    /**
+     * Tests if the boat is lower than the mark that the port side method works if
+     * boat is facing east
+     */
+    @Test
+    public void testIsPortSide() {
+        firstTestBoat.setBearing(Bearing.fromDegrees(90));
+        firstTestBoat.setCurrentPosition(lowGPS);
+        markToTest.setPosition(highGPS);
+
+        assertEquals(firstTestBoat.isPortSide(markToTest), true);
+    }
+
+    /**
+     * Tests if the boat is lower than the mark that the port side method works if
+     * boat is facing west
+     */
+    @Test
+    public void testIsPortSideWrong() {
+        firstTestBoat.setBearing(Bearing.fromDegrees(270));
+        firstTestBoat.setCurrentPosition(lowGPS);
+        markToTest.setPosition(highGPS);
+
+        assertEquals(firstTestBoat.isPortSide(markToTest), false);
+    }
+
+    /**
+     * Tests if the boat is lower than the mark that the starboard side method works if
+     * boat is facing east
+     */
+    @Test
+    public void testIsStarboardSideWrong() {
+        firstTestBoat.setBearing(Bearing.fromDegrees(90));
+        firstTestBoat.setCurrentPosition(lowGPS);
+        markToTest.setPosition(highGPS);
+
+        assertEquals(firstTestBoat.isStarboardSide(markToTest), false);
+    }
+
+    /**
+     * Tests if the boat is lower than the mark that the starboard side method works if
+     * boat is facing west
+     */
+    @Test
+    public void testIsStarboardSide() {
+        firstTestBoat.setBearing(Bearing.fromDegrees(270));
+        firstTestBoat.setCurrentPosition(lowGPS);
+        markToTest.setPosition(highGPS);
+
+        assertEquals(firstTestBoat.isStarboardSide(markToTest), true);
+    }
+
+
+    //////////////////////////////Mark Lower////////////////////////////////
+
+    /**
+     * Tests if the boat is higher than the mark that the port side method works if
+     * boat is facing east
+     */
+    @Test
+    public void testIsPortSideHigherWrong() {
+        firstTestBoat.setBearing(Bearing.fromDegrees(90));
+        firstTestBoat.setCurrentPosition(highGPS);
+        markToTest.setPosition(lowGPS);
+
+        assertEquals(firstTestBoat.isPortSide(markToTest), false);
+    }
+
+    /**
+     * Tests if the boat is higher than the mark that the port side method works if
+     * boat is facing west
+     */
+    @Test
+    public void testIsPortSideHigher() {
+        firstTestBoat.setBearing(Bearing.fromDegrees(270));
+        firstTestBoat.setCurrentPosition(highGPS);
+        markToTest.setPosition(lowGPS);
+
+        assertEquals(firstTestBoat.isPortSide(markToTest), true);
+    }
+
+    /**
+     * Tests if the boat is higher than the mark that the starboard side method works if
+     * boat is facing east
+     */
+    @Test
+    public void testIsStarboardSideHigher() {
+        firstTestBoat.setBearing(Bearing.fromDegrees(90));
+        firstTestBoat.setCurrentPosition(highGPS);
+        markToTest.setPosition(lowGPS);
+
+        assertEquals(firstTestBoat.isStarboardSide(markToTest), true);
+    }
+
+    /**
+     * Tests if the boat is higher than the mark that the starboard side method works if
+     * boat is facing west
+     */
+    @Test
+    public void testIsStarboardSideHigherWrong() {
+        firstTestBoat.setBearing(Bearing.fromDegrees(270));
+        firstTestBoat.setCurrentPosition(highGPS);
+        markToTest.setPosition(lowGPS);
+
+        assertEquals(firstTestBoat.isStarboardSide(markToTest), false);
+    }
 }