Sailors have been navigating the seas for thousands of years, and navigational technology has progressed exponentially during that time. This concise yet comprehensive volume begins with the impressive developments in navigation made by early navigators and follows the art and science of navigation through the ages to their culmination in the huge advances made by our contemporaries. With a focus on the navigational tools invented by each age and civilization, Launer traces the evolution of humankind¿s navigational skills from the Kamal of the Arabs and the Lead-line first used by the Romans to the radio and satellite communication devices available to modern sailors. He pays homage to the Polynesians who, in the absence of a written language were able to pass down their navigational skills through generations, and to the adventurous Vikings, who managed to find their way from Scandinavia to England, Iceland, Greenland and beyond; but he also covers the practical applications of the complex technologies found on most boats today, such as GPS. Generous illustrations help readers envision the tools in use. Navigation Through the Ages will appeal to sailors and lay readers alike¿anyone with an interest in the history of science and the exploration of our world.

Many books on celestial navigation take shortcuts in explaining concepts; incorrect diagrams and discussion are often used for the sake of moving the student along quickly. This book tells the true story-and the whole story. It conveys celestial navigation concepts clearly and in the shortest possible time.It's tailored for navigation in the GPS age-a time of computers, calculators, and web resources. Although it covers all of the traditional methods of 'working a sight, ' the primary thrust is using the (under $10) scientific calculator. By using equations that you key into your calculator, this book guides you toward a better understanding of the concepts of celestial navigation.You will learn novel ways to plot lines of position, ways to check your sextant accurately by star sights, and how to tell what time it is from a moon sight. The many appendices are a treasure of references and explanations of abstract ideas. Celestial Navigation is a crucial skill for the offshore navigator to know, this book provides the shortest path to that knowledge.

If you want to know where you are, you need a good clock. The surprising connection between time and placeais explored inaTime and Navigation- The Untold Story of Getting from Here to There, the companion book to the National Air and Space Museum exhibition of the same name. Today we use smartphones and GPS, but navigating has not always been so easy. The oldest "clock" is Earth itself, and the oldest means of keeping time came from observing changes in the sky. Early mariners like the Vikings accomplished amazing feats of navigation without using clocks at all. Pioneering seafarers in the Age of Exploration used dead reckoning and celestial navigation; later innovations such as sextants and marine chronometers honed these techniques by measuring latitude and longitude. When explorers turned their sights to the skies, they built on what had been learned at sea. For example, Charles Lindbergh used a bubble sextant on his record-breaking flights. World War II led to the development of new flight technologies, notably radio navigation, since celestial navigation was not suited for all-weather military operations. These forms of navigation were extended and enhanced when explorers began guiding spacecraft into space and across the solar system. Astronauts combined celestial navigation technology with radio transmissions. The development of the atomic clock revolutionized space flight because it could measure billionths of a second, thereby allowing mission teams to navigate more accurately. Scientists and engineers applied these technologies to navigation on earth to develop space-based time and navigation services such as GPS that is used every day by people from all walks of life. While the history of navigation is one of constant change and innovation, it is also one of remarkable continuity. Time and Navigation tells the story of navigation to help us understand where we have been and how we got there so that we can understand where we are going.

A wide-ranging history of the geography and communities of Kent from the earliest times to the present day.Kent, with its long coastline and its important geopolitical position close to London and continental Europe, and on major trading routes between Britain and the wider world, has had a very significant maritime history. This book covers a wide range of topics relating to that history from the earliest times to the present day. It sets Kent's varied coastline and waters in their geological and geographical context, showing how erosion and sediment deposition have contributed to the changing nature of maritime activities and populations. It examines Kent's strategic role in the defence of the country with the development and redevelopment of coastal defences, including four naval dockyards. It goes on to consider the supporting industries which grew up around the coastline, those which supplied raw materials and agricultural products from the county's hinterland, and its wider national and international trading links. It also discusses the diverse coastal communities of Kent and how they have changed in response to the demands of defence, trade, and changing population and migration patterns. In addition, the book includes detailed case studies which explore particular subject areas as exemplars of the major themes covered by the book.l trading links. It also discusses the diverse coastal communities of Kent and how they have changed in response to the demands of defence, trade, and changing population and migration patterns. In addition, the book includes detailed case studies which explore particular subject areas as exemplars of the major themes covered by the book.l trading links. It also discusses the diverse coastal communities of Kent and how they have changed in response to the demands of defence, trade, and changing population and migration patterns. In addition, the book includes detailed case studies which explore particular subject areas as exemplars of the major themes covered by the book.l trading links. It also discusses the diverse coastal communities of Kent and how they have changed in response to the demands of defence, trade, and changing population and migration patterns. In addition, the book includes detailed case studies which explore particular subject areas as exemplars of the major themes covered by the book.

Introduction, Shoreline changes in Bahrain since the beginning of human Occupation, Variation in holocene land use patterns on the Bahrain Islands: construction of a land use model, The human biological history of the Early Bronze Age population in Bahrain, Dental anthropological investigations on Bahrain, India and Bahrain: A survey of culture interaction during the third and second millennia, The prehistory of the Gulf: recent finds, The Gulf in prehistory, Some aspects of Neolithic settlement in Bahrain and adjacent Regions, Early maritime cultures of the Arabian Gulf and the Indian Ocean. The origins of the Dilmun Civilization, The island on the edge of the world', Burial mounds near Ali excavated by the Danish Expedition, Dilmun - a trading entrepôt: evidence from historical and archaeological sources, Dilmun and Makkan during the third and early second millennia B.C, Death in Dilmun, The Barbar Temple: stratigraphy, architecture and Interpretation, The Barbar Temple: its chronology and foreign relations Reconsidered, The Barbar Temple: the masonry, The land of Dilmun is holy, Bahrain and the Arabian Gulf during the second millennium B.C.: Urban crisis and colonialism, The chronology of City II and III at Qal'at al-Bahrain, Iron Age Dilmun: A reconsideration of City IV at Qal'at al-Bahrain, MAR-TU and the land of Dilmun, The shell seals of Bahrain, Susa and the Dilmun Culture The Dilmun seals as evidence of long distance relations in the early second millennium B.C., Indus and Gulf type seals from Ur, Animal designs and Gulf chronology, Eyestones and Pearls, The Tarut statue as a peripheral contribution to the knowledge of early Mesopotamian plastic art, Commerce or Conquest: variations in the Mesopotamia-Dilmun Relationship, The occurrence of Dilmun in the oldest texts of Mesopotamia, The Deities of Dilmun, The lands of Dilmun: changing cultural and economic relations during the third to early second millennia B.C., Trade and cultural contacts between Bahrain and India in the third and second millennia B.C., Bahrain and the Indus civilisation, Dilmun's further relations: the Syro-Anatolian evidence from the third and second millennia B.C.; Tylos and Tyre: Bahrain in the Graeco-Roman World, A three generations' matrilineal genealogy in a Hasaean inscription: matrilineal ancestry in Pre-Islamic Arabia Bahrain and its position in an eco-cultural classification-concept of the Gulf: some theoretical aspects of eco-cultural zones, Dilmun and the Late Assyrian Empire, Some notes about Qal'at al-Bahrain during the Hellenistic period, The Janussan necropolis and late first millennium B.C. burial customs in Bahrain, Qal'at al-Bahrain: a strategic position from the Hellenistic period until modern times, The presentation and conservation of archaeological sites in Bahrain, The Barbar Temple site in Bahrain: conservation and presentation, The traditional architecture of Bahrain.

First Published in 1993. This volume is based on the papers delivered at the historical sessions of the conference 'Bahrain Through the Ages', organised in Bahrain on the initiative of the Government of the State of Bahrain, in December 1983. The papers are substantially the texts of those delivered at the Conference, adapted to printed form. This volume is the companion to 'Bahrain Through the Ages - the Archaeology'.