Taking the course now...........36% completed (2 of 7 chapters). Chapter 2 had 61 pages at 24 second minimum viewing duration per page, which took 1.5 hours to complete with a 100% test passing grade. What's nice anout the BoatUS course is that you can print off a "cheet sheet" for each charpter to take notes BEFORE you take the test, if you are like me and everything is new and fresh. One side benefit of taking this course today is it is keeping me from my planned boat activity to crawl into the engine bay of my new powerboat to clean out the previous owner's debris, tools, extra engine fluids and map out the waste system.