Cromarty Firth Chart and Tidal Information:
Details of the Cromarty Firth Approaches are shown on Admiralty Chart 1077, Charts 1889 Cromarty Firth Cromarty Bank to Invergordon and 1890 Invergordon to Dingwall. All information is given in WGS84 format. Attention is drawn to the fact that rigs anchored in the Firth may have extended moorings.
Cromarty Firth tidal information for the next 7 days is available via UKHO website. Alternatively tide table booklets for the year can be purchased at the Port Office.
| The datum used in the Tide Tables and | HAT | below | 4.90m | |
| Admiralty Charts is the level of 2.1m | MHWS | below | 4.30m | |
| below Ordnance Datum (Newlyn). The | MHWN | below | 3.30m | |
| heights shown should be added to the | OD | below | 2.10m | |
| depth on the soundings plans and charts | MLWN | below | 1.50m | |
| unless they are preceded by a minus | MLWS | below | 0.60m | |
| sign when they should be subtracted. | LAT | below | 0.20m | |
| CD | below | 0.00m |
(The tidal information for Cromarty Firth Port Authority is reproduced by permission of the Controller of Her Majesty's Stationery Office and the UK Hydrographic Office (www.ukho.gov.uk). British Crown copyright.)




