Maps FAQ


Converting ShipPlotter Satellite Maps to UI-View Format

When a satellite map is downloaded using ShipPlotter software, two files  are added to the  ShipPlotter--/Charts/-- dir.

A picture file ( map), in .jpg format and a .clb file, in text format, the latter contains the longitude and latitude co-ordinates of the four corners of the map in the .jpg file.

The .jpg picture file needs nothing done to it. The .clb file, however, needs to be edited, and this can be done using a text editor such as Notepad.

A typical ShipPlotter .clb file looks like this:   Using  050806081340.clb as an example-


This line translates as: 51.37.314N,0.32.414E  in UI-View format




This line translates as: 50.59.784N,2.7.680E in UI-View format

(The size of the .jpg image is 1020 x 642 pixels, and the numbers following xy eg 0,0 1020,0 0,642 1020,642 are map corners)

UI-View map .inf files require longitude and latitude co-ordinate pairs for the top left hand corner of the map and the bottom right hand corner of the map i.e, only 2 pairs of co-ordinates, in the form: deg.min.decimal min N (S,E or W) and longitude and latitude are separated with a , (comma) - as in my examples above.

Additionally, a name is required in a new line:



Thames (The name included here will appear in the UI-View maps list).

When the edited file is saved,  the .clb extension will be replaced with .txt - so, the file will save as 050806081340.txt

At this point it is probably worth renaming 050806081348.jpg as Thames.jpg

                                                                  and 050806081348.txt as Thames.txt

all that remains now is to convert Thames.txt to Thames.inf  - This cannot be done in Notepad or in Windows

Go to the Command prompt, navigate to the dir where Thames.txt has been saved and:

in DOS, ren Thames.txt Thames.inf   (The DOS command ren=rename, and the syntax is ren Thames.txt Thames.inf).

Working with the Command Prompt

(For those who rarely use it!)

When starting the Command Prompt , a screen will appear something like this:

C:\Documents and Settings\Yourname>                 ( assuming your PC boots on Drive C:)

If you type in cd\ and press Return, the prompt will change to


Now type in:  cd  Program Files\COAA  and press Return, the prompt will change to

C:\Program Files\COAA>

Type in: cd ShipPlotter and press Return, the prompt will change to

C:\Program Files\COAA\ShipPlotter>

Type in: cd Chart Files and press Return, the prompt will change to

C:\Program Files\COAA\ShipPlotter\Chart Files>

You are now in the sub-directory where all the .jpg and .clb chart files are stored

Type in: dir/w and press Return

The screen will now fill with a list of file names - If there are too many,  the top of the list will scroll off screen.

Type in: dir/p instead, and press Return

The screen will fill, and at the bottom you will see - Press any key to the bottom of the screen.

Pressing any key will enable the screen to fill again with the rest of the files in the directory.

It is now possible to identify individual files, (In exactly the same way as you would using Windows Explorer) for example, the files I

used in the previous example, 050806081348.jpg and 050806081348.clb will be listed here (only if you have downloaded them !). If

you do not feel confident to rename or manipulate files in the Program Files area, then copy them to another  directory, out side

Program Files, using Windows Explorer, before working with the Command Prompt.

The process outlined above should enable you to locate files using the Command Prompt and rename the edited text file as a .inf