The International Mussel Watch 



1.7.12 Visual Positioning 



In addition to LORAN navigation, techniques of visual positioning are used to accurately 

 and precisely document site center locations. Lines of position will be established using all of the 

 following practical methods: 



Relative bearing to fixed, charted landmarks (e. g., towers, monuments, stacks, etc.) using 

 hand compass or equivalent. 



Relative bearing to charted Coast Guard aids to navigation (e. g., buoys, flashers, etc.). 



Relative bearing to fixed uncharted landmarks (e. g., buildings, poles, etc.) using hand 

 compass or equivalent. 



1.7.13 Photodocumentation 



Photographic documentation of intertidal collection sites will be carried out where 

 appropriate. Bivalve transects and site centers may be photographed with fixed reference points 

 for future relocation of a site. A photographic log should be kept with date, time, frame number, 

 film roll number and location information of any photographs taken for documentation purposes. 





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