Hi there Wojciech, welcome to Steemit! Great intro - your interests are very fascinating - and like that self-cleaning surface you mentioned in the comment. Looking forward to your posts,

Your post was upvoted and resteemed by @knot - a blog designed to connect all sailors on Steemit,

If you'd like, join us on discord chat: https://discordapp.com/invite/PyJwEtD