Sorry, last thing: https://www.starpath.com/catalog/books/1992.htm https://www.starpath.com/catalog/books/1992.htm This is a workbook and records the data use

Sorry, last thing: https://www.starpath.com/catalog/books/1992.htm https://www.starpath.com/catalog/books/1992.htm This is a workbook and records the data used for navigation by sextant to Hawai'i. Good for practice.