A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.

When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found?（）

The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．

Which information does the outer ring of a compass rose on a nautical chart provide（）.

（）is not a position-fixing system.

The description Racon beside an illustration on a chart would mean a （）.

What information is found in the chart title? （）

When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.

The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.

When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.