* GPS chapter completely updated to reflect newer models and features of GPS receivers now available * Expanded to include a section on routefinding on glaciers

"The compass's rocky evolution is charted with an enthusiast's passion…A fascinating adventure." —Bernadette Murphy, Los Angeles Times This is the rich hist

The ideal reference for this subject. Discusses how & why gyros work, control & damping gyro compass errors & correction, & more.

"This second edition provides significant new material on topics that have come to prominence in recent times, such as oceanography and marine archaeology: key