With over two-thirds of the globe covered by water, the ability to navigate safely and quickly across the oceans has been crucial throughout human history. As seafarers attempted longer and longer voyages from the sixteenth century onwards in search of profit and new lands, the tools of navigation became ever more sophisticated. The development of instruments over the last five hundred years has seen some revolutionary changes, spurred on by the threat of disaster at sea and the possibility of huge rewards from successful voyages. As this book shows, the solution of the infamous longitude problem, the extraordinary impact of satellite positioning and other advances in navigation have successfully brought together seafarers, artisans and scientists in search of better ways of getting from A to B and back again.

Latitude Hooks and Azimuth Rings is for people who like to work with their hands and who appreciate traditional nautical craftsmanship. You don't have to be the master of any craft to undertake any of these projects--from a simple kamal or latitude hook to the more complex pelorus or octant--just a careful and enthusiastic worker. These 18 projects fall roughly into three categories: decorative, useful, and somewhere in between. Some, such as the astrolabe, are mainly for display. On the other hand, the sounding line is an important and practical tool for small-craft navigation, particularly in the absence of an electronic sounder. The cross-staff falls somewhere in between, equally at home in the den or the ditch kit. Each of the devices discussed here--with simple, proven building instructions complemented by clear illustrations--has at one time or another been used for the practical business of navigation, and each is worth reviving for its beauty, historic value, or sheer usefulness. Dennis Fisher has designed these projects with an emphasis on simplicity and reasonable cost. Everything can be scratch-built using easily obtainable materials and tools, and each is true to the spirit and function of the original instrument.

Some of the principles of aerial navigation, including problems in space navigation are presented. It contains an exposition of the theoretical principles and a description of the material means for aerial navigation and astronomic orientation relative to the earth and in interplanetary space. Particular attention is paid to unified course systems, to height velocity central units, to Doppler velocity measuring instruments, different navigational automatic devices for path calculation and to astronomic orientation devices. The theoretical principles and the constructions of gyroscopic inertial, stellar-inertial, and complex naviga tion systems are given. (Author).

IMO publication sales number: T131E.