ManualOperator

Performance

Note: to change the presentation of this palette (in the horizontal or the vertical sense) click on the button situated in the right hand corner of the menu bar; hold down the Shift key while clicking on this button to swap between horizontal and vertical layout.

Wind sensor

Modify the wind sensor

Lay-lines can be displayed even if you have no compass using a wind sensor, or enter a value manually.

To define Wind sensor data parameters you have to activate the new menu

[Modify wind sensor] from [Performance]

The following dialog appears:

Choose:

Sensor Wind

To use receive data from Wind Sensor

Constant Wind

To enter manually a constant value for Speed and Direction.

Change Constant wind value

To change one value you can either:

1.Directly enter values using numeric Keyboard

2.Or click on the corresponding button for using the "Virtual keyboard"

The "virtual keyboard" contains three parts:

1.Part 1 where you can reset number by clicking on DEL, select the first number by clicking on HOME, select the last number by clicking on END and to select the previous number by clicking on BACK.

2.Part 2 is dedicated to navigational arrows (left, right, up and down).

3.Part 3 click on each number for typing the number value. Click on the Entered arrow before quitting.

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Modifying Wind Forecast

It is possible to adjust the wind forecast data values, in order, for example, to take into account the hours or wind direction or wind speed, which has been prevailing in the zone for several days.

In such a case, the program replaces the values which you have selected in the corresponding input text.

Activate the function Modify Wind Forecast, under the Weather menu, to access the modify Wind Forecast dialog box.

Go to the [Weather] menu and choose [Modify Wind Forecast]

A dialog box appears and allows you to modify parameters as:

1.Wind forecast hours value from + or - 24 hours .

2.Wind angle enter + or - 180 °.

3.The strength of the wind from + or - 50.

IMPORTANT - this function will only be available in case if your software is a professional version and it has Routing and Performance modules.

Data Trend Center

What "Data Trend Center" function is?

The "Data Trend Center" function is only available if you have program’s PERFORMANCE module.

By using data received from the navigation center, MaxSea is able to carry out a graph in the form of curves and deducts

a tendency from it of variation. This graphic representation can help you to choose quickly a strategy of navigation to be adopted in the time according to the studied parameters.

IMPORTANT - In the case of an analysis made on a short duration, the inaccuracy of certain data does not allow to refer to it, MaxSea calculates the values of prediction from a sample of historic data, these data can be interpolated calculation. The curve of prediction is not thus faithful to that of the sample of the history, it is only the interpretation of what could be.

The data analyzed graphically are the following ones:

•True Wind Direction ( TWD )

•True Wind speed ( TWS )

•Barometric pressure

•Polar rate (return in %)

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Performance

Note that two data among the four can be simultaneously represented on the graph.

This function is to be found under the [Performance] menu of MaxSea.

Modifying "Data Trend Center" parameters

Select [Option: Data Trend Center...] from the [Performance] menu to call up the dialog box detailing the parameter settings of the "Data Trend Center" graph.

A dialog box appears and offers you the possibility of modifying parameters of the sample study and the tendency of prediction as well as the graph display characteristics.

For that purpose, select one or two data to analyze, then enter the study parameters as well as the graph display parameters.

Choosing data to be studied:

1.Define the number of data to be studied (2 at most if the check box "Study second data" is selected).

2.Select from the pop-up menu the type of data among the four data which are proposed (Barometric pressure, True Wind Direction, True Wind Speed or Polar rate).

3.Then choose a "Confidence interval" so that the values displayed on the graph are included in this interval (by default it is equal to 95 %, the value should be defined between 85 % and 97,5 % if you chose a value outside this interval a warning reminds you the limits).

Defining study characteristics :

"Study time" is determining for historic and prediction analysis. The stored data number is important all the more as the study duration is long. If it is the case The step of sampling will be bigger and the graph precision more true (all the seconds MaxSea records data).

1.Select a "Study time" value which can be defined from three minutes to one day (maximum value 23. 59). In case the selected values are inconsistent a warning reminds you the limits.

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2.By proceeding in the same way as above select a "Prediction time" value. This value is going to depend on that of the "Study time" value and can be superior to the defined "Time study" but should stay in limits of coherence. (If the studied values are not enough to define a sampling prediction then a warning appears and reminds you the setting parameters).

Example: "Prediction time" depends on the value chosen as the study so, if the duration of study is defined between 10 minutes and 33 minutes (with a step of 5 seconds for the data recording) the prediction time should not exceed the 30 minutes.

Display Characteristics

Select the corresponding check box to decide which curve will be displayed on the "Data Trend Graph".

The different curves displayed on the graph are :

•"Data Curve" drawn in red on the graph and which corresponds to a sample of historic data graphic.

•"Approximations" curve drawn in blue on the graph.

•"Prediction" curve drawn in light green on the graph and which corresponds to the tendency of variation. From the sample historic data MaxSea is able to carry out the "Prediction curve" on the graph.

•"Trust interval" curve drawn in dark green.

To change the curve color you should click the pop-up menu situated next to the color, then a color palette appears:

Selecting the "Confidence interval"

In case the curve of "Angle" data displayed between 0 and 360 ° ( trust interval selected by default) appears in the following way:

You can select The [-180°, +180°] item to improve the curve display inside the trust interval and will appear in the following way:

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The "Data Trend Center" graph

To display the "Data Trend Center" graph please, select the [Data Trend Center] item from the [Performance] menu.

According to the parameters defined beforehand, the window " Data Trend Center" graph appears under one or two graphs.

Description of one of a "Data Trend Center" graph above :

The first part of the curve (drawn in red) corresponds to the representation of a sample calculated from the data history, then it goes on by a curve drawn in light green which is the tendency of variation representation.

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The historic data sample and the prediction curves are drawn inside the trust interval which is drawn in dark green on the graph.

The curve drawn in light green, corresponds to the prediction calculated from the historic data sample.

The approximations curve is drawn in blue on the graph.

In the present example the parameters chosen are:

Two types of data to be studied:

TWD (True Wind Direction) data are represented on the first graph with a confidence interval equal to 96 % (curve situated upper into the "Data Trend Center" graph window )

TWS (True Wind Speed) data are represented on the second graph with a confidence interval equal to 94 % (curve situated at the bottom of the graph)

Study Parameters:

"Study Time" duration is defined to 2 hours and 10 minutes (all values put back on the left of the times axis before the arrow are negative values. The arrow indicates the axis zero point of times).

"Prediction time" duration is defined to 35 minutes (all values put back on the right of the times axis after the arrow are positive values to the right of the arrow)

The arrow situated on the middle of the horizontal bar allows to select a zone to be studied with more precision.

(Please, refer to the "Customize paragraph " according to Options of posting " for more information)

Remarks

In the sampling MaxSea does not store the data which are lower than the minute.

MaxSea can be unable to calculate a prediction when several history data from the sample are missing and when this absence does not appear in a evident way on the curve.

The prediction curve can start before the "zero" point of the times axis :

This will happen in case the received data stop, at this moment MaxSea calculates the prediction from the last successful data.

( Please, refer to the paragraph " Input / Output port configuration" paragraph from the "Connect equipment to MaxSea" chapter to verify your instruments connection)

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Customize the display

To activate a selection zone on the "Data Trend Center" graph click on the arrow button.

Then a selection area is drawn on the graph and allows to zoom in or to zoom out on a very precise part of the curve.

In case it's the first time using the "zoom in / zoom out" button:

•To select a part of the curve which needs to be study precisely, click on a corner of the selection and drag the mouse held down to the desired size.

•Then click again on the arrow to validate the display.

Note first using all the curve is selected by default .

To change the zoom view on the curve you have to click again on the arrow and the following window appears :

the "Arrow" button which allows to activate the zoom in / back zoom out function on the curve.

the selection zone which moves as you move the mouse on the curve. To define a new selection on the curve:

oBy moving the selection on the curve. As the selection moves the upper preview window is updated in a simultaneous way.

o By resizing the selection area on the curve.

Preview selection zone window.

To validate the display click again on the arrow button.

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You will learn in this section:

1.How to open a Polar File

2.How to open a Weather Forecast File

3.How to plot the waypoint to reach

4.How to calculate a Weather Routing

5.How to calculate a Weather Routing from a selected point

6.Displaying the Weather Routing on the chart

7.The Weather Routing Center

8.Editing and Modifying the Weather Routing

9.How to Create "Routing Areas" Layer PTF file

10.Create and Play a Wether Routing Animation

Note: Weather Routing's functions can be found under the [Performance] menu.

Open a Weather Forecast File

Your ship’s potential performances are saved as speed polars.

The first time the program is launched you are asked to select a polar file; this is the file, which will subsequently be automatically loaded when the program is re-launched.

•If you wish to change the polar file select [Open] from the [File] menu.

•Then, choose from "My documents" folder the polar file which has for extension (*.pol ).

Note: to show only the polar files, click on the Files of type pop-up menu and select "Utils: Polar(*.pol)" item .

•Lastly select the desired file from the list and click on Open.

Plot the Waypoint to reach

Plot a waypoint or several waypoints on the chart

1.Select the color and shape of your Waypoints in the toolbar

2.Select the Go to Tool and wherever you want on the chart to plot the waypoint to reach To learn more see related topics :Go to a chosen Waypoint (Quick Route) or Active Route

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