The Nautical Institute
![nautical institute](./img/nauticalinstitute_logo.jpg)
Maritime Economy Ministry of Poland
![MTM](./img/mgm_logo.jpg)
Maritime Office in Gdynia
Hydrographic Office Of The Polish Navy
Polish Academy of Science, Committee of Transport, Traffic Control Section
Polish Academy of Science, Committee of Geodesy, Section of Navigation
Polish Navigation Forum
![forum](./img/forum.jpg)
Polish Nautological Society
![ptn](./img/ptn-logo_m.jpg)