Navigational exercise book consists of handwritten exercises to determine longitude and latitude between various ports with most originating in Cape Cod, Massachusetts. Exercises consist of examples with originating longitude and latitude, place of departure, destination, and conditions which might influence arrival. Answers consist of a plat diagramming the course, changes in longitude and latitude, distances sailed and other concerns. Also included are directional tables, or charts, and small, but detailed drawings of ships and ports on nearly every page. The types of exercises are divided into problems concerning plain sailing, traverse sailing, and mercator's sailing. The routes the exercises present consist mostly of trips between Cape Cod and the West Indies.
