The article is devoted to the problems in the training of professional production personnel. In particular, this applies to boatmasters. The discipline "Mathematical Fundamentals of Navigation" is directly related to the accuracy of the ship's observation (determining the location of its position) and the accuracy of its wiring along the laid course. It is not an easy task to determine what should be taught in this course, how exactly it should be taught, how the content of the course should depend on the navigation equipment used, etc.