diff --git a/ProjectCruiser/CollectionGenericObj/AbstractCompany.cs b/ProjectCruiser/CollectionGenericObj/AbstractCompany.cs
index fdfd45f..7af6814 100644
--- a/ProjectCruiser/CollectionGenericObj/AbstractCompany.cs
+++ b/ProjectCruiser/CollectionGenericObj/AbstractCompany.cs
@@ -31,12 +31,11 @@ public abstract class AbstractCompany
 
     // Перегрузка оператора сложения для класса
     public static int operator +(AbstractCompany company,
-        DrawningBase trasport) =>
-        company._collection.Insert(trasport, new DrawiningShipEqutables());
+        DrawningBase transport) => company._collection.Insert(transport, new DrawiningShipEqutables());
 
     // Перегрузка оператора удаления для класса
     public static DrawningBase operator -(AbstractCompany company,
-            int pos) => company._collection.Remove(pos);
+            int pos) => company._collection?.Remove(pos);
 
     // Сортировка ----------------------------------------------------------- [!]
     public void Sort(IComparer<DrawningBase?> comparer) =>
diff --git a/ProjectCruiser/CollectionGenericObj/ArrayGenObj.cs b/ProjectCruiser/CollectionGenericObj/ArrayGenObj.cs
index 0bfe319..96af3bb 100644
--- a/ProjectCruiser/CollectionGenericObj/ArrayGenObj.cs
+++ b/ProjectCruiser/CollectionGenericObj/ArrayGenObj.cs
@@ -139,7 +139,7 @@ public class ArrayGenObj<T> : ICollectionGenObj<T>
         }
     }
 
-    public void CollectionSort(IComparer<T> comparer)
+    void ICollectionGenObj<T>.CollectionSort(IComparer<T?> comparer)
     {
         Array.Sort(_collection, comparer);
     }
diff --git a/ProjectCruiser/CollectionGenericObj/ListGenObj.cs b/ProjectCruiser/CollectionGenericObj/ListGenObj.cs
index 9c1fb48..3551498 100644
--- a/ProjectCruiser/CollectionGenericObj/ListGenObj.cs
+++ b/ProjectCruiser/CollectionGenericObj/ListGenObj.cs
@@ -112,7 +112,7 @@ public class ListGenObj<T> : ICollectionGenObj<T>
         }
     }
 
-    public void CollectionSort(IComparer<T> comparer)
+    void ICollectionGenObj<T>.CollectionSort(IComparer<T?> comparer)
     {
         _collection.Sort(comparer);
     }
diff --git a/ProjectCruiser/DrawningSamples/DrawningShipCompare.cs b/ProjectCruiser/DrawningSamples/DrawningShipCompare.cs
index 3792ba9..cb7a8a4 100644
--- a/ProjectCruiser/DrawningSamples/DrawningShipCompare.cs
+++ b/ProjectCruiser/DrawningSamples/DrawningShipCompare.cs
@@ -9,17 +9,18 @@ public class DrawningShipCompare : IComparer<DrawningBase?>
         {
             return -1;
         }
+
         if (y == null || y.EntityTransport == null)
         {
             return 1;
         }
+
         if (x.GetType().Name != y.GetType().Name)
         {
             return x.GetType().Name.CompareTo(y.GetType().Name);
         }
 
         var speedCompare = x.EntityTransport.Speed.CompareTo(y.EntityTransport.Speed);
-
         if (speedCompare != 0)
         {
             return speedCompare;
diff --git a/ProjectCruiser/DrawningSamples/DrawningShipEqutables.cs b/ProjectCruiser/DrawningSamples/DrawningShipEqutables.cs
index fb19dbd..6a97f66 100644
--- a/ProjectCruiser/DrawningSamples/DrawningShipEqutables.cs
+++ b/ProjectCruiser/DrawningSamples/DrawningShipEqutables.cs
@@ -11,28 +11,30 @@ public class DrawiningShipEqutables : IEqualityComparer<DrawningBase?>
         if (x == null || x.EntityTransport == null) return false;
         if (y == null || y.EntityTransport == null) return false;
         if (x.GetType().Name != y.GetType().Name) return false;
+
         if (x.EntityTransport.Speed != y.EntityTransport.Speed) return false;
         if (x.EntityTransport.Weight != y.EntityTransport.Weight) return false;
         if (x.EntityTransport.MainColor != y.EntityTransport.MainColor) return false;
 
         if (x is DrawningCruiser && y is DrawningCruiser)
         {
-            /*
-                public Color AdditionalColor { get; private set; } // доп. цвет
+            /*  public Color AdditionalColor { get; private set; } // доп. цвет
                 // признаки (наличия)
                 public bool HelicopterPads { get; private set; } // вертолетная площадка
-                public bool Hangars { get; private set; } // ангар
-            */
-            if (((EntityCruiser)x.EntityTransport).AdditionalColor
-                != ((EntityCruiser)y.EntityTransport).AdditionalColor) return false;
+                public bool Hangars { get; private set; } // ангар */
 
-            if (((EntityCruiser)x.EntityTransport).HelicopterPads
-                != ((EntityCruiser)y.EntityTransport).HelicopterPads) return false;
+            EntityCruiser EntityX = (EntityCruiser)x.EntityTransport;
+            EntityCruiser EntityY = (EntityCruiser)y.EntityTransport;
 
-            if (((EntityCruiser)x.EntityTransport).Hangars
-                != ((EntityCruiser)y.EntityTransport).Hangars) return false;
+            if (EntityX.AdditionalColor != EntityY.AdditionalColor)
+                return false;
+
+            if (EntityX.Hangars != EntityY.Hangars)
+                return false;
+
+            if (EntityX.HelicopterPads != EntityY.HelicopterPads)
+                return false;
         }
-
         return true;
     }
     public int GetHashCode([DisallowNull] DrawningBase obj)