public boolean isOver()
	{
		for (int i=0;i<this.fSize;++i)
		{
			for (int j =0;j<this.fSize;++j)
			{
				int curValue = this.getField().get(i).get(j);
				if (curValue == Field.free 		||
					curValue == Field.submarine ||
					curValue == Field.destroyer ||
					curValue == Field.cruiser 	||
					curValue == Field.battleship)
				{
					return false;
				}
			}
				
		}
		return true;
	}