Total tide lrg

Grunt Productions 2007

Total TideTotal TideTidal Prediction ProgrammeTidal Prediction Programme

produced by UKHOproduced by UKHO

Launched in May 2001Launched in May 2001


A brief by Lance Grindley A brief by Lance Grindley


Supply of Total TideSupply of Total Tide

Draft copies released in December Draft copies released in December 2000.2000.

Launch in May 2001 Launch in May 2001

Licensing rules allow use on Licensing rules allow use on unlimited number of workstations.unlimited number of workstations.

The unique code required to activate The unique code required to activate the programme is for each station.the programme is for each station.


License StatementLicense Statement

“The product may be installed on an unlimited number of workstations within a single named vessel, establishment or office network as authorized by the UKHO in its licensing arrangements with the RN.”


New EditionsNew Editions

“The software and the data only produce a reliable result if the latest edition of the data is used. From time to time the UKHO will issue new editions of the data or parts of it in order to maintain the reliability of Total Tide. The issue of new editions on the data will automatically render previous editions of that data unreliable.”


SOLAS RegulationsSOLAS Regulations

“ Users are reminded of the Safety of Life at Sea (SOLAS) Convention Chapter V Regulation 20 and the Merchant Shipping (Carriage of Nautical Publications) Regulations to carry Tide Tables. In this context Total Tide is presently regarded as an aid to navigation and not as equivalent to the paper product.”


Initial Display LayoutInitial Display Layout

Area of world (seven areas).Area of world (seven areas).

List of ports or tidal stations in selected List of ports or tidal stations in selected order.order.

Zoomable chartlet covering the world with Zoomable chartlet covering the world with ports and tidal stations identified.ports and tidal stations identified.

(Programme will return to previous set up.)(Programme will return to previous set up.)

Standard drop down menu bar at the top of Standard drop down menu bar at the top of the screen. the screen.

Three windows presented side by side:Three windows presented side by side:


Types of Prediction Types of Prediction

Standard PortsStandard Ports - predictions made - predictions made from a set of harmonic constants.from a set of harmonic constants.

Secondary PortsSecondary Ports - predictions made - predictions made with an associated set of harmonic with an associated set of harmonic constants. (Predictions may be of constants. (Predictions may be of secondary quality.)secondary quality.)

Secondary Ports (Non-harmonic)Secondary Ports (Non-harmonic) - - harmonic constants are not used and harmonic constants are not used and predictions are made by applying predictions are made by applying differences only. differences only.


Selecting LocationSelecting Location

Choose location from list of ports Choose location from list of ports (double click).(double click).

Type port name and search from top Type port name and search from top or bottom.or bottom.

Scroll list and chart from chosen port Scroll list and chart from chosen port to find adjacent datato find adjacent data

Type position in latitude and Type position in latitude and longitude and radius of search.longitude and radius of search.


Port name and Port name and search toolssearch tools

Position, radius Position, radius and area searchand area search

Scroll list and Scroll list and chart (right chart (right

click)click)

Port list for Port list for selectionselection


Daylight Saving TimeDaylight Saving Time

Daylight Saving Time (DST) is selected Daylight Saving Time (DST) is selected manually for the port once the port data manually for the port once the port data has been calculated.has been calculated.

DST can only be applied when of DST can only be applied when of Standard Time is selected in the Options Standard Time is selected in the Options Page. Page.


Daylight Saving Daylight Saving Time OptionTime Option

Mouse driven Mouse driven cursor to read cursor to read

curvecurve


Total Tide OptionsTotal Tide Options

Enter draught, masthead height and Enter draught, masthead height and underkeel clearance.underkeel clearance.

Select which areas to be displayed.Select which areas to be displayed.

Alter palette to suit daylight, twilight Alter palette to suit daylight, twilight or night operation.or night operation.

Select Standard Time, UT or Select Standard Time, UT or Computer Time.Computer Time.

Choose units in meters or feet.Choose units in meters or feet.


Port Predictions and DataPort Predictions and Data

Provides a tidal curve for any port selected Provides a tidal curve for any port selected from list or double clicking on chartlet.from list or double clicking on chartlet.

Provides time and predicted heights of HW Provides time and predicted heights of HW and LW.and LW.

Provides predicted heights at regular time Provides predicted heights at regular time intervals.intervals.

Provides maximum and minimum heights for Provides maximum and minimum heights for selected draught and masthead height.selected draught and masthead height.

Notes on the selected port.Notes on the selected port.


Vessel DimensionsVessel Dimensions

Under Keel ClearanceUnder Keel Clearance

Shallowest Shallowest depth and depth and lowest lowest obstructionobstruction


Tidal Windows Tidal Windows when minimum when minimum depth is entereddepth is entered


Notes (where applicable)Notes (where applicable)

Owing to the complicated variations in the tide between Portland and Portsmouth, the time and height differences for these places will only give approximate predictions. A more accurate representation of the tidal curves at these places can be obtained from the diagrams on pages xxii to xxiv of Admiralty Tide Tables Vol. 1 (NP201).

Strong winds between north-east and south-east coupled with high barometric pressures may reduce predicted levels by up to 1m and delay times of high and low waters by up to 1 hour. Strong winds from the West coupled with low barometric pressures may increase predicted levels and advance predicted times by a similar amount.


Astronomical DataAstronomical Data

Graphic representation of the moon Graphic representation of the moon and dates for the next four phases.and dates for the next four phases.

Azimuth and altitude of the sun and Azimuth and altitude of the sun and moon, civil/nautical twilights and moon moon, civil/nautical twilights and moon rise/set.rise/set.

Data is calculated for the port or tidal Data is calculated for the port or tidal stream diamond but not ship’s current stream diamond but not ship’s current position.position.


Tidal Streams (2 types)Tidal Streams (2 types)

Harmonic and Non-harmonic streams (from Harmonic and Non-harmonic streams (from ATT or TS Atlases)ATT or TS Atlases)

Displays:Displays:

Non-HarmonicNon-Harmonic HarmonicHarmonic

Vector graphicVector graphic Vector graphicVector graphic

Max ebb/floodMax ebb/flood TS diamond table TS diamond table

Hourly RatesHourly Rates Hourly Rates Hourly Rates

Astro DataAstro Data Astro DataAstro Data


Total Tide ConclusionsTotal Tide Conclusions

Quick and easy to use.Quick and easy to use.Provides many additional features Provides many additional features when compared with TideCalc when compared with TideCalc including TS.including TS.Remains a navigation aid under Safety Remains a navigation aid under Safety of Life at Sea (SOLAS) regulations.of Life at Sea (SOLAS) regulations.SHOULD BESHOULD BE available in all vessels available in all vessels now.now.

Questions??? Questions???

Total tide lrg

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