Fillable INSTRUCTIONS FOR USE This form describes the minimum (Australian Hydrographic Service)

Fill Online, Printable, Fillable, Blank INSTRUCTIONS FOR USE This form describes the minimum (Australian Hydrographic Service) Form

Use Fill to complete blank online AUSTRALIAN HYDROGRAPHIC SERVICE pdf forms for free. Once completed you can sign your fillable form or send for signing. All forms are printable and downloadable.

INSTRUCTIONS FOR USE This form describes the minimum (Australian Hydrographic Service)

On average this form takes 5 minutes to complete

The INSTRUCTIONS FOR USE This form describes the minimum (Australian Hydrographic Service) form is 3 pages long and contains:

  • 0 signatures
  • 0 check-boxes
  • 18 other fields

Country of origin: AUSTRALIA
File type: PDF

Use our library of forms to quickly fill and sign your Australian Hydrographic Service forms online.

BROWSE AUSTRALIAN HYDROGRAPHIC SERVICE FORMS

Related forms
Fill has a huge library of thousands of forms all set up to be filled in easily and signed.
Fill in your chosen form
Sign the form using our drawing tool
Send to someone else to fill in and sign.
find another form
 
Page | 1
Copyright © Commonwealth of Australia
Jan 2020 (BN12068494 / BN7362328)
Fact Sheet: Hydrographic Surveying
High Density Bathymetric ENC – Survey Metadata Form
INSTRUCTIONS FOR USE
This form describes the minimum metadata required to accompany bathymetry collected in support of the compilation of High
Density bathymetric Electronic Navigation Charts.
This form is to accompany every survey submitted by a port in support of HD bENC. It enables the AHO to fast-track validation of
each survey and allow it to pass directly to the nautical cartographers to create a new or replacement ENC for the area surveyed.
Failure to supply this form, satisfactorily completed, will introduce delays in production until missing or inadequate information is
resolved.
For Hydrographic survey data to be suitable for use in HD bENC the AHO must be able to completely replace existing charted data
with the new data within the bounds of the AU6 ENC cell. In order to achieve this the survey extents must overshoot the AU6
ENC data coverage limits by at least 50m to permit reliable generation of depth contours, with the data meeting the following IHO
S-44 Special Order requirements (Ports Australia “Class A”):
Maximum allowable Total Horizontal Uncertainty (95% confidence):
+/- 2 m
Maximum allowable Total Vertical Uncertainty (95% confidence):
A = +/- 0.25m
B = 0.0075
TVU for 10m depths = +/- 0.26m
TVU for 20m depths = +/- 0.29m
Feature Detection:
Full seafloor search (able to detect features
greater than 1 cubic metre in size)
The bathymetry supplied needs to be referenced to:
WGS84. This is what ships, pilots, and ENC use. Transformation to other reference systems, and back again, increases
the THU.
LAT, based upon a specified port tidal datum (such as “zero of the port tide gauge”, “x.xx metres below [named]
benchmark” or similar). Where multiple tidal stations or nodes have been used, each should be listed to ensure accuracy
is maintained through to the ENC, as simply stating “LAT” does not provide sufficient detail to replicate the tidal reference
plane within the AHO. LAT within ports is frequently insufficiently defined for levels of accuracy to be maintained through
to the ENC. If in doubt about the horizontal or vertical datum details required please contact the AHO’s Tidal and
Geodetic Control Section: tides.support@defence.gov.au
The preferred format of bathymetric data is:
Processed,
Gridded at 1m resolution or better, shoal depth true position,
Provided as either ascii (xyz txt pts etc) or Caris CSAR format. Full source data will be accepted.
Please forward survey data with the completed Survey Metadata Form to:
Hydrographer of Australia
C/- Maritime Data Management Section
Australian Hydrographic Service
Locked Bag 8801
Wollongong NSW 2500
Email survey data and Survey Metadata Form to: datacentre@hydro.gov.au for datasets less than 7mb for each email
Contact: datacentre@hydro.gov.au for arrangements for datasets larger than 7mB
Notes:
Those mandatory fields highlighted will be used during the initial assessment of the suitability of a survey for use in a
bathymetric ENC.
Remaining fields assist in confirming claimed requirements have been met, and ensuring alignment between reference
systems used by the port and the AHO.
General
Survey Title and ID (as supplied)
(M)
AU6 Cell surveyed
(O)
Survey Authority
(M)
Surveyor in Charge and qualification
(M)
Start date of survey
(M)
End date of survey
(M)
Data Coverage
Survey extents overshoot AU6 data coverage by at least
50m (If ‘No’ the survey may be rejected)
(M)
Horizontal Control
Datum WGS84
(M)
Spheroid
(M)
Projection and Zone
(M)
Estimated THU of soundings at 2 Sigma (95%) confidence
level better than +/-2m.(Calculations can be included as an
attachment.
(M)
Vertical Control
Soundings datum LAT
(M)
Tide reduction method
(M)
Tide Station 1 details (M if observed tides used)
(M)
Benchmark (BM) used and datum connection
(M)
Geoid details if using GPS tides
(M)
Tide Station 2 details (M if multiple tide stations used)
(O)
Benchmark (BM) used and datum connection
(O)
Geoid details if using GPS tides
(O)
Tide Station 3 details
(O)
Benchmark (BM) used and datum connection
(O)
Estimated TVU of soundings at 2 Sigma (95%) confidence
level better than IHO Special Order / Ports Australia “Class
A” ( +/- 0.26m @10m, +/- 0.29m @20m2m) (Calculations
can be included as an attachment)
(M)
Feature Detection and Data Density
Full sea floor search achieved (at least 100%)
(M)
IHO Special Order feature detection achieved
(M)
Shoal depths systematically investigated and least depths
determined?
(M)
Data density provided (1.0m or better)
(M)
Has data been thinned from that collected?
(O)
If thinned, thinning method and bin size used
(O)
Download
Save PDF to desktop
Email
Email completed PDF
Send for Signing
Email for others to sign
Print
Print document
Choose a Field
Click on a field and
select the person that should complete it
Want to add a signature?
You can add a signature field
and assign it to someone else
to sign
Choose a Field
Click on a field and
select the person that should complete it

INSTRUCTIONS FOR USE This form describes the minimum (Australian Hydrographic Service)

This document is locked as it has been sent for signing.

You have successfully completed this document.

Other parties need to complete fields in the document. You will recieve an email notification when the document has been completed by all parties.

This document has been signed by all parties.

Completed 31 January 2021

Message

View Audit Log
Print With Audit Log
Duplicate Document