ProjectWarmlyShip/ProjectWarmlyShip/Drawnings/DrawningWarmlyShip.cs

@@ -14,10 +14,6 @@ public class DrawningWarmlyShip : DrawningShip
     {
         EntityShip = new EntityWarmlyShip(speed, weight, bodycolor, additionalcolor, shpipipes, fueltank); //дописать конструктор
     }
-    public void setAdditionalColor(Color color)
-    {
-        ((EntityWarmlyShip)EntityShip).setAdditionalColor(color);
-    }
     public override void DrawTransport(Graphics g)
     {
         //оператор is совместимость объекта с заданным типом

ProjectWarmlyShip/ProjectWarmlyShip/FormShipConfig.cs

@@ -1,4 +1,5 @@
 using ProjectWarmlyShip.Drawnings;
+using ProjectWarmlyShip.Entities;
 
 namespace ProjectWarmlyShip;
 
@@ -114,10 +115,9 @@ public partial class FormShipConfig : Form
 
     private void labelAdditionalColor_DragDrop(object sender, DragEventArgs e)
     {
-        if (_ship is DrawningWarmlyShip _warmlyship)
+        if (_ship.EntityShip is EntityWarmlyShip _warmlyship)
         {
             _warmlyship.setAdditionalColor((Color)e.Data.GetData(typeof(Color)));
-
         }
         DrawObject();
     }