diff --git a/Liner/Liner/SetShipsGeneric.cs b/Liner/Liner/SetShipsGeneric.cs
index 5c9bfad..6e6c3b5 100644
--- a/Liner/Liner/SetShipsGeneric.cs
+++ b/Liner/Liner/SetShipsGeneric.cs
@@ -19,21 +19,17 @@ namespace Liner
         }
         public int Insert(T ship)
         {
-            if (_places.Count > _maxCount)
-            {
-                return -1;
-            }
             return Insert(ship, 0);
         }
         public int Insert(T ship, int position)
         {
-            if (position >= _maxCount || position < 0) return -1;
+            if (position < 0 || position > Count || _maxCount == Count) return -1;
             _places.Insert(position, ship);
             return position;
         }
         public T Remove(int position)
         {
-            if (position >= _maxCount || position < 0)
+            if (position >= Count || position < 0)
             {
                 return null;
             }
@@ -45,7 +41,7 @@ namespace Liner
         {
             get
             {
-                if (position >= _places.Count || position < 0)
+                if (position >= Count || position < 0)
                 {
                     return null;
                 }
@@ -53,7 +49,7 @@ namespace Liner
             }
             set
             {
-                if (position >= _places.Count || position < 0)
+                if (position >= Count || position < 0)
                 {
                     return;
                 }