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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.
Today, with the rapid advances in science and technology, increasing numbers of sailors and boat owners venture across the world's oceans relying almost entirely on electronic aids and global positioning systems.
Heroism and horror abound in these true stories of 16 great explorers who journeyed to the Arctic and Antarctic regions, two exquisite and unique ice wildernesses. Recounted are the exciting North Pole adventures of Erik the Red in 982 and the elusive searches for the &“Northwest Passage&” and &“Farthest North&” of Henry Hudson, Fridtjof Nansen, Fredrick Cook, and Robert Peary. Coverage of the South Pole begins with Captain Cook in 1772; continues through the era of land grabbing and the race to reach the Pole with James Clark Ross, Roald Amundsen, Robert Scott, and Ernest Shackleton; and ends with an examination of the scientists at work there today. Astounding photographs and journal entries, sidebars on the Inuit and polar animals, and engaging activities bring the harrowing expeditions to life. Activities include making a Viking compass, building a model igloo, making a cross staff to measure latitude, creating a barometer, making pemmican, and writing a newspaper like William Parry's &“Winter Chronicle.&” The North and South Poles become exciting routes to learning about science, geography, and history.
This volume looks at the ancient heritage of Greek philosophy and Mesopotamian astronomy and examines the history of map-making, coastal and celestial navigation and astronomy from 1487-1727.
This text focuses on the history of the development of hand-held celestial navigation instruments, offering descriptions of the tools used. It also includes a glossary of technical terms.
Contains cross-referenced articles--arranged alphabetically from Donald Mackay to Zheng He--on topics of land, space, and sea exploration and provides biographical profiles of notable explorers throughout history. Includes a topical outline of entries and a directory of contributors.
This guide to making wooden sundials gently leads beginning diallists into sundial lore and construction. Novice craftsmen who can wield a saw, wood-burning pen, matte knife, sandpaper and a few other simple tools can make five different kinds of sundials; plans are flexible and allow for embellishment, alteration, variety of materials. Precalculated templates can be removed from the book and carbon-paper-transferred to wood.
A rigorous appraisal of sundial science includes mathematical treatment and pertinent astronomical background, plus a nontechnical treatment so simple that several of the dials can be built by children. 106 illustrations.