Небольшие правки.

src/MapWithSetShipsGeneric.java

@@ -26,9 +26,9 @@ public class MapWithSetShipsGeneric<T extends IDrawingObject, U extends  Abstrac
     }
     public T Delete(int position)
     {
-        T ship=_setShips.Get(position);
+        T ship=_setShips.Remove(position);
         _deletedShips.add(ship);
-        return _setShips.Remove(position);
+        return ship;
     }
     public BufferedImage ShowSet()
     {

src/MapsCollection.java

@@ -25,7 +25,7 @@ public class MapsCollection {
     }
     public void DelMap(String name)
     {
-        if (_mapStorages.containsKey(name)) _mapStorages.remove(name);
+        _mapStorages.remove(name);
     }
     public MapWithSetShipsGeneric<DrawingObjectShip,AbstractMap> Get(String ind)
     {