Nautical Calculation companion

This companion contains every calculation you need for coastal and offshore navigation. It includes all the frequently needed (but often forgotten) equations and formulae you need afloat. Each topic is followed by a worked example to show you how it should be done, and line drawings help you understand the process. This little companion serves as a great reminder of crucial information. It is laminated to stand up to frequent use and serves as a wonderful aide-memoire that will fit into your jacket pocket.