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NIGERIAN NAVY HYDROGRAPHIC OFFICE
HYDROGRAPHIC NOTE
For reporting navigational dangers and changes observed at sea by mariners.

  *FORM FIELD REQUIRED.
 
*General Locality:
*Chart(s) Affected: Edition Date:
ENC(s) Affected: Edition/Update No:
*DETAIL OF CHANGES/DANGER OBSERVED
*Date of Observation; *Time Observed (UTC)
POSITION OF DANGER OR FEATURE DESCRIBED ABOVE
*Latitude *Longitude Position Method Vertical Datum

Position System Details;

Sextant Angle Details; (If Available)

Echo Sounder Used; Transducer Depth;

Accompanying Plots and Photographs;
(if any)

Select A File To Upload:
VESSEL AND OBSERVER DETAILS
*Vessel Name:
Vessel Type:
*Master/ Observer’s Name  Signature
*Email: *Telephone:
Fax: Other:
  

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