2026 Reading Challenge

Join the Goodreads Author Program

Are you Christa Sys, author of the books below?
Future Challenges for Inland Navigation by Christa Sys Binnenvaart by Christa Sys Sustainable Maritime Supply Chain by Christa Sys Financiële wiskunde by Christa Sys Port Business by Thierry Vanelslander Maritime Supply Chains by Thierry Vanelslander


To join the author program as Christa Sys, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


About the Author Program
Authors on Goodreads
Author Guidelines
Author Program How-To
Author & Advertisers Blog
Ask the Author: Featured Authors
About Goodreads