исправил проверку

SailBoat/SailBoat/DrawningObjects/DrawningBoat.cs

@@ -47,8 +47,8 @@ namespace SailBoat.DrawningObjects
 
         public DrawningBoat(int speed, double weight, Color bodyColor, int width, int height)
         {
-            if (width < 200) { width = 900; }
-            if (height < 200) { height = 500; }
+            if (width < _boatWidth) { width = 900; }
+            if (height < _boatHeight) { height = 500; }
             _pictureWidth = width;
             _pictureHeight = height;
             EntityBoat = new EntityBoat(speed, weight, bodyColor);