Authors
Daniel Duda
Polish Naval Academy, Institute of Navigation and Hydrography, Śmidowicza 69 Str., 81-127, Gdynia, Poland
Ryszard Wawruch
Gdynia Maritime University, Department of Navigation, Jana Pawła II 3 Str., 81-345, Gdynia, Poland
© 2017 Daniel Duda, Ryszard Wawruch, published by Polish Naval Academy
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.