Just a note from a real novice.
I just started studying your "Route Planner" and am using it on my boat's smart TV with my iPhone's "hot spot." I don't have the vocabulary to precisely express my sincere "thanks" for your team's success in creating such a fantastic tool for Yachtsmen. Note: After I plan a route & leave the Internet, upon my return, my TV's menue has a button for "Book Marks" & one for "Most Visited." By clicking either one, up comes the routes I previously planned which can be updated by simply moving the date bar to a desired point in time. That is unbelievable! not unlike Space X's automatically returning their boosters back to the launch pad after a launch! Thanks again...extremely well done!