Admiralty Notices to Mariners - United Kingdom Hydrographic Office

More documents

Recommendations

Info

HYDROGRAPHIC NOTE FOR GPS OBSERVATIONS AGAINST CORRESPONDING ADMIRALTY CHART POSITIONS (To accompany Form H.102) H.102B (V6.0 Dec 2012) Time/Date of Observation BA Chart/ENC in use (SEE NOTE 3a) Number / ENC Edition Date & NM / ENC update status Latitude/Longitude of position read from Chart / ECDIS (SEE NOTE 3b) Latitude/Longitude of position read from GPS (on WGS 84) (SEE NOTE 3c) Additional Information/Remarks (SEE NOTE 3d)
NOTES: HYDROGRAPHIC NOTE FOR GPS OBSERVATIONS AGAINST CORRESPONDING ADMIRALTY CHART POSITIONS (To accompany Form H.102) H.102B (V6.0 Dec 2012) 1. This form is designed to assist in the reporting of observed differences between WGS 84 (GPS) Datum and British Admiralty Chart Datum by mariners, including yachtsmen, and should be submitted as an accompaniment to Form H.102 (full instructions for the rendering of data are on Form H.102). Where there is insufficient space on the form an additional sheet should be used. Objective of GPS Data Collection The UK Hydrographic Office would appreciate the reporting of GPS positions, referenced to WGS 84 Datum, at identifiable locations on Admiralty Charts. Such observations could be used to calculate positional shifts between WGS 84 and chart datums for those Admiralty Charts which it has not yet been possible to compute the appropriate shifts. These would be incorporated in future new editions or new charts and promulgated by Preliminary Notices to Mariners in the interim. It is unrealistic to expect that a series of reported WGS 84 positions relating to a given chart will enable it to be referenced to that datum with the accuracy required for geodetic purposes. Nevertheless, this provides adequate accuracy for general navigation, considering the practical limits to the precision of 0.2mm (probably the best possible under ideal conditions – vessel alongside, good light, sharp dividers etc), this represents 10 metres on the ground at a chart scale of 1:50.000. It is clear that users prefer to have some indication of the magnitude and direction of the positional shift, together with an assessment of its likely accuracy, rather than be informed that a definitive answer cannot be formulated. Consequently, where a WGS 84 version has not yet been produced, many charts now carry approximate shifts relating WGS 84 Datum to chart datum. Further observations may enable these values to be refined with greater confidence. 2. Details required a. It is essential that the chart number, edition date and its correctional state (latest NM) are stated. For ENCs, please state the ENC name and latest update applied. b. Position (to 2 decimal places of a minute) of observation point, using chart graticule or, if ungraduated, relative position by bearing/distance from prominent charted features (navigation lights, trig. points, church spires etc.). c. Position (to 2 decimal places of a minute) of observation point, using GPS Receiver. Confirm that GPS positions are referenced to WGS 84 Datum. d. Include GPS receiver model and aerial type (if known). Also of interest: values of PDOP, HDOP or GDOP displayed (indications of theoretical quality of position fixing depending upon the distribution of satellites overhead) and any other comments.
Page 1 and 2:
Notices 27 - 124/13 ADMIRALTY NOTIC
Page 3 and 4:
I ADMIRALTY NOTICES TO MARINERS Thi
Page 5 and 6:
I Section VI - Radio Signals Update
Page 7 and 8:
I ADMIRALTY CHARTS AND PUBLICATIONS
Page 9 and 10:
I ADMIRALTY CHARTS AND PUBLICATIONS
Page 11 and 12:
I ADMIRALTY CHART AGENT / DISTRIBUT
Page 13 and 14:
II GEOGRAPHICAL INDEX (1) Miscellan
Page 15 and 16:
II INDEX OF CHARTS AFFECTED Admiral
Page 17 and 18:
78* SCOTLAND - West Coast - Flannan
Page 19 and 20:
II 70 POLAND - Gdańsk - Westerplat
Page 21 and 22:
II 91 GERMANY - North Sea Coast - T
Page 23 and 24:
II 110 SPAIN - Islas Baleares - Mal
Page 25 and 26:
II 88 OMAN - Gulf of Oman - As Suwa
Page 27 and 28:
II 30 JAPAN - Seto Naikai - Mizushi
Page 29 and 30:
II 39 JAPAN - Honshū - South Coast
Page 31 and 32:
II 45 JAPAN - Honshū - South Coast
Page 33 and 34:
II 53 JAPAN - Seto Naikai - Bisan S
Page 35 and 36:
II 69 AUSTRALIA - Western Australia
Page 37 and 38:
66 BRAZIL - East Coast - Recife Eas
Page 39 and 40:
II 80 UNITED STATES OF AMERICA - Ea
Page 41 and 42:
II 95(P)/13 GULF OF FINLAND - Finla
Page 43 and 44:
II 74(P)/13 INDIA - West Coast - Po
Page 45 and 46: II 59(T)/13 JAPAN - Honshū - South
Page 47 and 48: II 98(T)/13 3. AUSTRALIA - Queensla
Page 49 and 50: II 105(P)/13 AUSTRALIA - South Aust
Page 51 and 52: To accompany Notice to Mariners 107
Page 53 and 54: To accompany Notice to Mariners 28/
Page 71 and 72: III 359 SCOTLAND, WEST COAST. Loch
Page 73 and 74: IV UPDATES TO ADMIRALTY SAILING DIR
Page 75 and 76: IV 172 Paragraph 5.90 1 line 8 For
Page 77 and 78: UPDATES TO ADMIRALTY LIST OF LIGHTS
Page 79 and 80: V Vol D Edition 2012/13 continued.
Page 81 and 82: V Vol E Edition 2012/13 continued.
Page 83 and 84: V Vol F Edition 2012/13 continued.
Page 85 and 86: V Vol K Edition 2012/13 continued.
Page 87 and 88: VI UPDATES TO ADMIRALTY LIST OF RAD
Page 89 and 90: VI VOLUME 2, NP 282, 2012/13 Publis
Page 91 and 92: VI VOLUME 5, NP 285, 2012/13 Publis
Page 93 and 94: VII UPDATES TO MISCELLANEOUS ADMIRA
Page 95: HYDROGRAPHIC NOTE FOR PORT INFORMAT
Page 99: HYDROGRAPHIC NOTE H.102 (V6.0 Dec 2
show all

Admiralty Notices to Mariners - United Kingdom Hydrographic Office

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?