R5 SUPREME - Navigation System
OPERATION
7000 118-301, A Page 89
5.9.3.3 Edit Scheduled Alert
1. Select the alert to edit in the alert list of the Scheduled Alerts view.
2. Press the button ―Edit Alert‖ to show the Edit Alert view.
3. Edit the parameters as described in sections 5.9.3.1 and 5.9.3.2.
4. Press ―Save‖ to save the changes.
5.9.3.4 Delete Scheduled Alert
1. Select the alert to delete in the alert list of the Scheduled Alerts view.
2. Press the button ―Delete Alert‖.
5.9.3.5 View Scheduled Alert
1. Select the alert to view in the alert list of the Scheduled Alerts view.
2. Press the button ―View Alert‖. The View Time Alert view or View ETA Alert
view will be shown where details about the selected alert are displayed.
3. Press ―Back‖ to exit to the Scheduled Alert view again.
5.10 Tidal Predictions
The R5 SUPREME CDU can be used for calculation of tidal predictions based on user input
of data from the Admiralty Tide Tables published by the U.K Hydrographic Office.
The user is required to input data for the specific port and select the point in time for which
the prediction is to be calculated.
The tidal prediction features can be accessed by pressing Main Menu
Voyage
Tide.
Note that meteorological effects (e.g wind and barometric pressure) as well as other factors
not accounted for in the generalized tidal models may cause significant deviation between
actual and predicted tide.
5.10.1 Calculation Method and Source Data for Tide
The tidal predictions are calculated by the so called ‗simplified harmonic method‘.
Harmonic constants and other parameters required are included in publications below.
Note that the algorithms applied are specifically adapted for this data. Tidal parameters
obtained from other sources shall not be used with the R5 SUPREME CDU tidal
calculations.
Predictions calculated according to this method will not be fully consistent with the
tabulated high/low and hourly predictions from the Admiralty tide tables. This is due to
the fact that the tabulated values are based on a more extensive data set compared to
the limited number of parameters used by the simplified harmonic method.
The source data is split between volumes with different geographical coverage as
follows:
U.K Hydrographic Office ADMIRALTY TIDE TABLES (ATT)
Volume 1 (NP 201): United Kingdom and Ireland (including European channel
ports)
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