Many useful tables and glossary of marine navigation are in volume II Due to critical feedback from academia, the 2017 edition reconstitutes several deleted or abridged chapters removed from the previous two editions. The additional text warranted the return of a two-volume format with the useful tables and glossary of marine navigation located in volume II. CHAPTER 1, MATHEMATICS CHAPTER 2, INTERPOLATION includes discussion on single, double, triple and nonlinear interpolation (with Bessel's formula included). CHAPTER 3, NAVIGATIONAL ERROR The chapter goes into greater depth on the subject than the 2002 edition. CHAPTER 4, CALCULATIONS AND CONVERSIONS summarizes the formulas the navigator depends upon during voyage planning, piloting, celestial navigation, and various related tasks. CHAPTER 5, COMPASS CONVERSIONS contains information on magnetic compass error, deviation table, applying variation and deviation, along with several example problems. CHAPTER 6, COMPASS ERROR