Deck : General Navigation - 1713/2138
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| The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accurately fix the vessel's position using all of the following EXCEPT _________. |
| A) depths soundings and hydrographic contour lines |
| B) buoys alone |
| C) all available aids to navigation |
| D) installed navigational equipment |
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