Hydrographic Note – National Hydrographic Agency

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Marine Safety ▼
Products & Services ▼
Survey Fleet
About Us
Contact Us
Catalogues ▼
- Paper Charts
- ENCs
Resources ▼

WHD 2025

Home
Marine Safety ▼
Products & Services ▼
Survey Fleet
About Us
Contact Us
Catalogues ▼
- Paper Charts
- ENCs
Resources ▼

Home
Marine Safety ▼
Products & Services ▼
Survey Fleet
About Us
Contact Us
Catalogues ▼
- Paper Charts
- ENCs
Resources ▼

Hydrographic Note

NHA > Hydrographic Notes

National Hydrographic Agency

Report navigational dangers and changes observed at sea by mariners.

Hydrographic Notes

1. General Locality

2. Affected Chart

3. Edition Date

4. Affected ENC(s)

5. Edition/Update Number

Date of Observation

Time of Observation

Details of Changes/Danger Observed

Latitude

Longitude

Position Method

Vertical Datum

Position System Details

Sextant Angle Details

Echo Sounder Details

Transducer Depth

Accompanying Plots and Photographs (if any)

Allowed file types: Images(jpg, jpeg, png), PDF, Docs, CSV

Vessel Name

Vessel Type

Observer's Name

Signature

Upload Signature (png/jpeg)

Email

Phone/Mobile

ADDRESS

2B, Osun Close,
Osun Crescent,
Maitama, Abuja

EMAIL

info@nha.gov.ng
msi@nha.gov.ng

PHONE

+2347039314379

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