If they are not present on the C-Map chart they won't appear on the vx2.
However, you can create them using the line feature.
1. Press the MENU key followed by the CHART SETUP, TRACKS & MARKS CONTROL
and MARK SETUP soft keys to show the MARKS & LINES menu.
2. Select LINES STYLE, then press the EDIT soft key.
3. Use the Trackball to select line style desired, then press the ENTER soft key. The line style “dot” disables line drawing. Edge of lines is determined by mark shape. For example, selecting the circle shape will join lines with a circle.
4. Press the MENU key twice to close the menu.