Deck 2014: General Navigation

1. A Maury Lightship swings about her anchor on a circle with a  21-meter diameter.
2. B The sunken wreck southwest of Beito Island shows the hull or superstructure above the sounding datum.
3. C There is a 12-meter deep hole inside the 5- meter curve just west of Beito Island.
4. D The position of the lightship is indicated by the center of the star on the symbol's mast.

Tip: press A-D to answer