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Boat routing software

4.4 Stars (5)
803 Downloads (This Week)
Last Update:
Download qtvlm_os-x_5.1.86.zip
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qtVlm is a weather routing software for virtual and real sailing boats.
qtVlm can be used in two modes:
- Virtual Racing designed to manage and pilot virtual boats from Virtual loup de mer VLM virtual races.
- Real Boats connected (or not) to a GPS device.

qtVlm uses boat polar diagrams and grib weather files, and includes
Routing module (isochrons method),
Route module respectively allowing route optimization and waypoints management.

qtVlm is also available on Android.

Please use qtVlm forum to report bugs and feature requests. Link can be found in qtVlm help menu. We cannot reply to reviews.

qtVlm Web Site


  • Grib viewer
  • display GPS data
  • routing
  • connected to VLM game


User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 5 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
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User Reviews

  • evenkeel2015
    1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Ma premiere intervention ici avec un tres grand respect pour le travail fait et les hommes qui y participent. OUBLIEZ CA IL SUFFIT DE FERMER ET RELANCER LE COMPARATEUR ET C'EST BON Desole de ne pas avoir teste ca avant. Du coup, je pense que vous avez plein d'autres interventions avant celle-ci :-D Un petit bug dans le comparateur de route : la hauteur des vagues n'est pas reinitialisee entre les differentes routes et c'est donc toujours la hauteur de la premiere route affichee qui est indiquee pour toutes les routes ( ca ressmble a un RAZ de la zone manquant ou une gestion d'index erronee). Comme je suis en Mode Bateau Reel, cette donnee est relativement significative pour moi (choix de date de depart ou option de routes differentes, etc..) et c'est comme ca que je me suis apercu de ce leger bug. Je suis aujourd'hui en version 5.1-81 sous Windows 8.1, mais j'avais deja remarque ce bugg dans la version 3.xx sous W7. Merci pour votre temps et votre comprehension. Serge First intervention here with great respect for the team ,-) I notice a small bug in the "routes compator" form : waves heights columns are always taking the first reading for the first route added in the comparator ( so you cannot compare different routes on this). (Looks like a no initialisation of the form's area before or wrong index tuning for the area). I didn't check values for the others datas as they looked pretty logical for me,but???? Obviously, I'm using QtVlm for "real boat". I'm using the 5.1-81 version under Windows 8.1 but noticed this bug on 3.xx versions under W7. Thank you for all the understanding and time consumming.

    Posted 11/29/2015
  • regis85
    1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Linux 64 (qtVlm-5.0.27_64) When I load the data from VLM, I got /home/my_user/qtVlm/mediaservice/libgstmediaplayer.so: undefined symbol: _Z22qt_gst_object_ref_sinkPv and qtVlm stop short

    Posted 10/20/2015
  • bobmsarik
    1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    in the qtvlm_setup-5.0.17.exe (windows version) : the polar boat_A35.csv is not present. This file is present in linux 5.0.17 version and in qtvlm_setup-5.0.15.exe (windows version).

    Posted 05/05/2015
  • rawi59
    1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Very good tool. But be aware of the default VLM settings for the Grib file management. The programm will by default delete existing Grib files on your harddisk without further interaction, as soon as you open a Grib file from that folder. That is because by default setting "Automatically delete gribs older than 3 days" is checked.

    Posted 04/12/2015
  • dikkehenk
    1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    hi there.. great program, but in the latest version the .csv export file does not contain time and date :)

    Posted 03/19/2015
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Additional Project Details


French, Czech, English, Spanish

Intended Audience

End Users/Desktop

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