单项选择题 No navigational aids are shown and chart is not kept corrected for alterations in depths inside the pecked lines. For more detailed information, the larger scale charts must be（）.

单项选择题 No navigational aids are shown and the chart is not kept corrected for alterations in depths inside the pecked lines. For more detailed information, the larger scale charts must be（）.

单项选择题 0cean passages for the world and routing charts should be（）for trans-oceanic information.