Puts all the piloting information you need at your fingertips. Includes dead reckoning basics, true, magnetic and compass relationships, position finding, estimating distances off, current and leeway corrections. Has time, distance and speed calculator, relative bearing gauge for distance off calculations and common chart symbols. Puts all the piloting information you need at your fingertips. Includes dead reckoning basics true magnetic and compass relationships position finding estimating distances off current and leeway corrections. Has time distance and speed calculator relative bearing gauge for distance off calculations and common chart symbols.