src/Board.java

@@ -1,4 +1,5 @@
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class Board {
@@ -10,6 +11,8 @@ public class Board {
 
 	public Board(int size) {
 		this.size = size;
+		this.ships = new ArrayList<>();
+		this.hits = new ArrayList<>();
 		this.createShip(size - 13);
 	}