diff --git a/AirBomber/AirBomber/AirplaneCompareByColor.cs b/AirBomber/AirBomber/AirplaneCompareByColor.cs
new file mode 100644
index 0000000..28e2879
--- /dev/null
+++ b/AirBomber/AirBomber/AirplaneCompareByColor.cs
@@ -0,0 +1,31 @@
+namespace AirBomber
+{
+    internal class AirplaneCompareByColor : IComparer<IDrawningObject>
+    {
+        public int Compare(IDrawningObject? x, IDrawningObject? y)
+        {
+            var xAirplane = x as DrawningObject;
+            var yAirplane = y as DrawningObject;
+            if (xAirplane == yAirplane)
+            {
+                return 0;
+            }
+            if (xAirplane == null)
+            {
+                return 1;
+            }
+            if (yAirplane == null)
+            {
+                return -1;
+            }
+            var xEntity = xAirplane.Airplane.Airplane;
+            var yEntity = yAirplane.Airplane.Airplane;
+            var colorWeight = xEntity.BodyColor.ToArgb().CompareTo(yEntity.BodyColor.ToArgb());
+            if (colorWeight != 0 || xEntity is not EntityAirBomber || yEntity is not EntityAirBomber)
+            {
+                return colorWeight;
+            }
+            return ((EntityAirBomber)xEntity).DopColor.ToArgb().CompareTo(((EntityAirBomber)yEntity).DopColor.ToArgb());
+        }
+    }
+}
\ No newline at end of file
diff --git a/AirBomber/AirBomber/AirplaneCompareByType.cs b/AirBomber/AirBomber/AirplaneCompareByType.cs
new file mode 100644
index 0000000..464b8f6
--- /dev/null
+++ b/AirBomber/AirBomber/AirplaneCompareByType.cs
@@ -0,0 +1,37 @@
+namespace AirBomber
+{
+    internal class AirplaneCompareByType : IComparer<IDrawningObject>
+    {
+        public int Compare(IDrawningObject? x, IDrawningObject? y)
+        {
+            var xAirplane = x as DrawningObject;
+            var yAirplane = y as DrawningObject;
+            if (xAirplane == yAirplane)
+            {
+                return 0;
+            }
+            if (xAirplane == null)
+            {
+                return 1;
+            }
+            if (yAirplane == null)
+            {
+                return -1;
+            }
+            if (xAirplane.GetType().Name != yAirplane.Airplane.GetType().Name)
+            {
+                if (xAirplane.Airplane.GetType().Name == "DrawningAirplane")
+                {
+                    return -1;
+                }
+                return 1;
+            }
+            var speedCompare = xAirplane.Airplane.Airplane.Speed.CompareTo(yAirplane.Airplane.Airplane.Speed);
+            if (speedCompare != 0)
+            {
+                return speedCompare;
+            }
+            return xAirplane.Airplane.Airplane.Weight.CompareTo(yAirplane.Airplane.Airplane.Weight);
+        }
+    }
+}
\ No newline at end of file
diff --git a/AirBomber/AirBomber/DrawningObject.cs b/AirBomber/AirBomber/DrawningObject.cs
index 4bb3594..487ccef 100644
--- a/AirBomber/AirBomber/DrawningObject.cs
+++ b/AirBomber/AirBomber/DrawningObject.cs
@@ -8,36 +8,36 @@ namespace AirBomber
 {
     internal class DrawningObject : IDrawningObject
     {
-        private DrawningAirplane _airplane = null;
-
         public DrawningObject(DrawningAirplane airplane)
         {
-            _airplane = airplane;
+            Airplane = airplane;
         }
 
-        public float Step => _airplane?.Airplane?.Step ?? 0;
+        public float Step => Airplane?.Airplane?.Step ?? 0;
+
+        public DrawningAirplane Airplane { get; private set; }
 
         public RectangleF GetCurrentPosition()
         {
-            return _airplane.GetCurrentPosition();
+            return Airplane.GetCurrentPosition();
         }
 
         public void MoveObject(Direction direction)
         {
-            _airplane?.MoveTransport(direction);
+            Airplane?.MoveTransport(direction);
         }
 
         public void SetObject(int x, int y, int width, int height)
         {
-            _airplane?.SetPosition(x, y, width, height);
+            Airplane?.SetPosition(x, y, width, height);
         }
 
         public void DrawObject(Graphics g)
         {
-            _airplane?.DrawTransport(g);
+            Airplane?.DrawTransport(g);
         }
 
-        public string GetInfo() => _airplane?.GetDataForSave();
+        public string GetInfo() => Airplane?.GetDataForSave() ?? string.Empty;
 
         public static IDrawningObject Create(string data) => new DrawningObject(data.CreateDrawningAirplane());
     }
diff --git a/AirBomber/AirBomber/Program.cs b/AirBomber/AirBomber/Program.cs
index f0821c2..4485161 100644
--- a/AirBomber/AirBomber/Program.cs
+++ b/AirBomber/AirBomber/Program.cs
@@ -17,6 +17,8 @@ namespace AirBomber
         {
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
+            var cmp = new AirplaneCompareByType();
+            cmp.Compare(null, null);
             ApplicationConfiguration.Initialize();
             var services = new ServiceCollection();
             ConfigureServices(services);