There are some technical anomalies in the course, e.g. sometimes the video or audio does not work for a lesson; the "next" button is early or late (go thru lesson twice before it is available). Sometimes the pictures do not match the content e.g. wearing sun glasses and hats is strongly recommended but the people never have either on! There was a question on the final exam that is not covered in the book or course: What vessel has two mast lights, one red, one white? I figured it to be a boat with a tow but cannot verify that anywhere. One module is very long (#2) and I would recommend splitting it in two since if you fail the test you have to do the entire module over. It would be very helpful to get feedback on each test, it's the best way to learn, from our mistakes!