ManualOperator

Radar OVERLAY

When the Minimum or Maximum Range is reach the button is then off and displayed in Grey color

Minimum and maximum ranges

Minimum range

The minimum range is defined by the shortest distance at which, using a scale of 1.5 or 0.75 nm, a target having an echoing area of 10 m2 is still shown separate from the point representing the antenna position. It is best to use the shortest possible range as long as the clarity and definition of the picture remain good.

Maximum range

The maximum detecting range of the radar, Rmax, varies considerably depending on several factors such as the height of the antenna above the waterline, the height of the target above the sea, the size, shape and material of the target, and atmospheric conditions.

Range information

Range information is displayed on top left of the chart windows.

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Note :If you are not satisfied with the current pulselength setting it is possible to change it on Radar equipment.

Directly set up the radar display by using the Range controls:

When the NavNet Radar Auto centering is activated, Range controls enables the radar picture to be viewed at varying scales.

This is also known as the zoom in and zoom out functions.

To center on the chart in the radar operating zone, simple click the Radar Center on button in the chart toolbar.

1.Click the Range + button to provide the best overview of your boat's relationship to land, large ship targets in or beyond view. This corresponds to long range scales or zoom out tool in the Toolbar.

2.Click the Range - button to provide greater detail of the radar echoes close to your boat, and should be used as you approach coastlines, harbors or boats in area. This corresponds to short range scales or Zoom in the Toolbar.

Range/RI/Number of Rings and chart scales correspondences table (samples):

Note : Maximum range depend on Radar model

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Radar OVERLAY

Acquiring Radar Targets

Acquiring Radar targets function permits the display of the symbol, number and motion vector of an manually or automatically acquired tracked target visible on screen.

Ten targets may be acquired and tracked either manually or automatically.

Manual acquisition

1.Right click any where on the chart to call up the context menu

2.Choose " Acquire a target".

If the radar overlay contains a point at this place, it will be stored as a target.

When you attempt to acquire an 11th target, the [Acquire a Target] choice is become unavailable. (Grey color)

Automatic acquisition

The ARP can acquire up to ten targets automatically by setting an automatic acquisition area. When automatic acquisition is selected after acquiring targets manually, only the remaining capacity for targets may be automatically acquired.

For example, if seven targets have been manually acquired, three targets may be automatically acquired after switching to automatic acquisition.

The automatic acquisition can be activated from NavNet equipment or directly from [Option: Radar...] [Utilities] Arpa section.

See also related topics :

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1.All different categories of Mobile targets

2.Mobile target's display

3.Mobile layer's center

4.Tracking Mobile targets

5.Mobile Trails

Radar Target's Vectors and History

You can display targets vectors line showing where they will be at a certain time in the future assuming their present course and speed.

The Radar overlay target's history appears as a trail of dots left by the target as it moves. You can change the color's display of it as you want (by default the trail is drawn in green color).

To change target vectors and history

1.Select [Option] from the [Targets] menu.

2.Choose the ARPA layer.

3.Enter the Trail observation delay.

4.Click OK to validate.

Obtain Information on a Radar Target

Depending on the Radar system unit connected to MaxSea, MaxSea is you will receive ARPA and / or AIS targets will appear on screen

Two ways for accessing Information about Radar Overlay Target:

Using the Select tool

double click a target to display the Targets properties window for this target which shows the parameters received.

Using the context menu

1.Right click on a target to call up the context menu

2.Select " properties" to bring up the target properties window.

The Target track box is used to stop the display and record the target track exactly as you would for your own ship. If desired, you can modify the name of the target and add a comment.

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Radar OVERLAY

To Free a Radar Target

When ten targets have been acquired, no more acquisition occurs unless targets are automatically cancelled. If you need to free target

To free an Overlay radar target:

1.Select an Overlay target by right clicking it

2.Choose Erase in the menu list.

Notes:

(1)- the target erasing can take a certain time, according to the refreshing and validating time of information.

(2)- a target already free or lost by the radar can not be free.

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4.How to display the polar window

5.Polar window overview

MaxSea polar file

The polar axes for boat are different and MaxSea will calculate the best route.

These polar are very useful for the knowledge of its sailing boat and MaxSea puts at your disposal a whole library of polar files in reference to one Category of boat.

These polar files are to list by default in " My Documents |My MaxSea| Polar" repertory.

When starting MaxSea for the first time, you will open the polar file stored by default in "My Document | My MaxSea " folder.

If you have a professional MaxSea version you can create automatically your own polar file.

You will learn in this section:

1.How to open an existing file

2.How to create a Polar file to use with MaxSea

3.How to automatically create your own polar file

4.How to display the polar window

5.Polar window overview

Opening a polar file

Your boat’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 the polar file which has for extension (*.pol ) from the "Polar" folder from "My documents" folder.

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.

Note: you may create as many polar files as you wish (a "choppy sea" one, a "calm sea" one, etc.). The Open function allows you to select which one the calculations should be based on at any given moment.

IMPORTANT - The Race function presupposes that information concerning your ship’s course are known to the program. The Race module is only relevant if your computer is connected to a navigation system (such as Brookes & Gatehouse, NKE, etc.) which supplies information as to the actual and supposed wind direction and force, the

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Performance

ship’s course and speed, the VMG, etc...

Note: in order to guarantee the reliability of data displayed on board the ship, the program always gives priority to receive from the navigation system; it only calculates data (for example, the VMG ), which the navigation system has not sent.

How to create a Polar file

MaxSea simply allows you to activate and deactivate this function from the performance menu when you leave and return to port.

Professional racers and serious sailors will still be able to modify the appropriate file manually at a later date should they feel the need to do so.

These instructions will show you how to create a MaxSea Polar file using basic information provided by the boat manufacturer (2 polar graphs at 2 different wind speeds.)

Note that Microsoft Excel must be installed on the computer.

In the “My MaxSea” folder in “My Documents” locate the file “Polar.xls” (Excel file). Open this file

This file contains a Macro. Macros must be turned ON to correctly convert the Excel spreadsheet to the Polar file. If you do not see a menu item called “For the Polar” on the upper right corner of Excel, Macros are not enabled

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To enable the Macro, select the "Tools" menu, then “Macro;” and then, “Security.”

Set the security level to medium or low

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