Formulas for the Air Navigation Computer is written for pilots and air navigators at all levels of experience from the novice to the professional. The book is self-help on how to use the E6-B Air Navigation Computer. An E6-B Air Navigation Computer is a circular slide rule with a wind slide on the reverse side. It is dedicated to performing all calculations related to pre-flight planning and in-flight air navigation. Every pilot has an E6-B Air Navigation Computer, which is supplied with a very brief instructional booklet when the E6-B is purchased. However, the booklet only covers a few basic formulas, and many more formulas are required for passing the pilot navigation exams at various levels and, of course, for all operational flying. Obtaining all these different formulas from various sources is time consuming, as this author has discovered over the years. They are not readily available in one book. This is the reason for writing Formulas for the Air Navigation Computer; it is a unique collection of air navigation computer formulas. The formulas are written as they appear when set up on the E6-B Air Navigation Computer. A full description on how to solve each formula is included, along with a worked example and also the methods for using the wind slide to calculate wind triangle and other navigational problems associated with the wind slide. The book is easy to follow by the novice pilot and a convenient reference source for the more experienced pilot. The book is complete with all the formulas a pilot of any level should need to know. It is laid out in a simple way with over 122 formulas and methods, covering Time, Speed & Distance, Air Speed, Altitude Navigation, VNAV, One-in-Sixty Rule, Wind triangle Calculations, Wind Finding methods, Fuel Calculations, Pressure Pattern Navigation and more.

The second edition of "Sea Clutter: Scattering, the K Distribution and Radar Performance" gives an authoritative account of our current understanding of radar sea clutter. Topics covered include the characteristics of radar sea clutter, modelling radar scattering by the ocean surface, statistical models of sea clutter, the simulation of clutter and other random processes, detection of small targets in sea clutter, imaging ocean surface features, radar detection performance calculations, CFAR detection, and the specification and measurement of radar performance. The calculation of the performance of practical radar systems is presented in sufficient detail for the reader to be able to tackle related problems with confidence. For this fully revised and updated second edition new material has been added on the Doppler characteristics of sea clutter and associated detection processing methods, bistatic sea clutter measurements; electromagnetic scattering theory of littoral sea clutter and bistatic sea clutter; the use of models for predicting radar performance, including discussion of Lognormal and Weibull models; further results and extended discussion on the modelling of the K distribution shape parameter for different conditions; the simulation of Doppler spectra of sea clutter; high grazing angle scattering; and the use of the K distribution in other fields. The material has been reorganized into four parts: Sea Clutter Properties, Mathematics of the K distribution, Radar Detection and Physical Modelling. This reorganization allows readers to access specific areas quickly, without the need for an extensive knowledge of the other parts.

The purpose of this field manual is to provide a standardized source document for Armywide reference on map reading and land navigation. This manual applies to every soldier in the Army regardless of service branch, MOS, or rank. This manual also contains both doctrine and training guidance on these subjects. Part One addresses map reading and Part Two, land navigation. The appendixes include a list of exportable training materials, a matrix of land navigation tasks, an introduction to orienteering, and a discussion of several devices that can assist the soldier in land navigation. Profusely illustrated throughout.

Day Skipper Exercises is a partner to the Day Skipper for Sail and Power course book, providing extra practice for students, helping them to absorb the theory in the main book. It contains practice test papers with fully explained answers, on all parts of the Day Skipper course, whether sail or power. It covers: - Chartwork - Tides - Pilotage and passage planning - Seamanship - Anchorwork - Ropework - Rules of the road A free practice chart is included, as well as extracts from tide tables, tidal curves, almanacs and pilotage notes so that students can complete the questions without the need for any other material. It is an ideal exam revision guide and invaluable practice for anyone wanting to brush up on their practical navigation skills. This second edition is updated throughout to take in the latest changes to the syllabus.

This book contains the definitive analysis of the navigation and achievement of the discovery of the North Pole by Robert Peary and Matthew Hensen in April of 1909. The report is the work of members of the Foundation for the Promotion of the Art of Navigation. It was commissioned by the National Geographic Society in 1989 to resolve the controversies surrounding this achievement once and for all. "I consider this the end of a historic controversy and the confirmation of due justice to a great explorer." - Gilbert M. Grosvenor, President National Geographic Society

"Astro-navigation from Square One to Ocean-master" is an impressively dynamic and understandable book. It is clear and concise with a large number of excellent diagrams that admirably compliment the text, demystifying and simplifying the art of astro-navigation. The excellent glossary of terms and language used, together with the highlighting of important points make this book particularly applicable to teachers, students and those new to the subject."Captain James P. Hughes. Lecturer in Nautical Science, South Tyneside College

For all radar users, recreational and professional. Covers the use of radar for chart navigation, blind pilotage, and collision avoidance. This Workbook is designed to be used in classroom or online courses in radar, or for individual study outside of the classroom. The lesson structure follows that used by several schools in the US, based on the background reader Radar for Mariners by David Burch. The Appendix on advanced radar plotting is included for professional mariners who seek more practice on interpreting ARPA output by working out the vector solutions themselves. The ability to manually interpret the radar interactions seen on the screen, independent of electronic solutions, is in keeping with the fundamental tenet of good navigation and seamanship that we should not rely on any one aid alone.

Sextants are used to measure angular heights of celestial bodies above the horizon to find the latitude and longitude of the observer. They can also be used on land with artificial horizons. Sextants can also be used to find the correct Universal Time by measuring the angular distance between the moon and another body along its path across the zodiac. In coastal waters or on land, sextants can be used for very accurate piloting by measuring the horizontal angles between charted landmarks. The vertical angle of a peak above its baseline determines the distance to it, which, combined with a compass bearing, yields a position fix from just one landmark. The angular dip of an object (island or vessel) below the visible horizon can also be used to determine the distance to it. This booklet explains how to get the best results from plastic sextants, and presents numerical comparisons with similar data from metal sextants. Sextant piloting techniques are also reviewed as they are an ideal use of a plastic sextant.

Celestial navigation is a way to find your latitude and longitude on earth using a sextant to measure the angular heights of celestial bodies above the horizon. It has been used by mariners at sea and explorers on land for three hundred years, and it is still used today as a dependable backup to modern electronic navigation. Routine celestial navigation relies upon accurate time (Universal Time) to find the longitude of a position (latitude does not require time). Advanced celestial navigators can find longitude without knowing the time using a technique called Lunar Distance. In this technique, the sextant is used to measure the angular (diagonal) distance between the moon and another celestial body. Since this distance slowly changes as the moon moves eastward though the stars, it can be used to find the time of day that is needed to complete the longitude determination.The process of finding longitude from lunar distance, however, requires special tables that have not been published in the Nautical Almanac or other sources since the early 1900s. Although software solutions have been available, most advanced celestial navigators are very grateful to navigation historian Bruce Stark for creating these printed tables dedicated to this task. They have been used and tested by mariners for more than 15 years and are praised by experts for their ingenuity and ease of use in solving this complex navigation exercise-which all agree is the hallmark of an expert celestial navigator.With The Stark Tables in your nav station, you no longer have to fear losing power to your electronic navigation aids, nor are you dependent on accurate time from any official broadcast.Besides their practical use in back up navigation, historians have used these tables for years to interpret the logbooks of Lewis and Clark, David Thompson, James Cook, Matthew Flinders, George Vancouver, Nathaniel Bowditch, and other notable explorers and sea captains."It is remarkable in this day when the very survival of celestial navigation seems in question, that an individual should suddenly appear on the scene and present to the world such a brilliant piece of work. Stark has rendered a great service to the celestial navigation community." - Robert Eno, The Navigator's Newsletter"Captain Cook would have relished using these tables, had they been available to him then."- George Huxtable, FRIN

This book is a facsimile reprint and may contain imperfections such as marks, notations, marginalia and flawed pages.

This book is a facsimile reprint and may contain imperfections such as marks, notations, marginalia and flawed pages.

"Navigation puzzles, controversies, historical problems, and other ponderables demystified by an expert navigator and writer. Joe Portney is a US Naval Academy graduate and Air Force navigator who has participated in three historic flights over the North Pole. He is a past President of the Institute of Navigation and recipient of the Weems Award for continuing contributions to the art and science of navigation. He has produced a wonderful little book here, chock filled with interesting tidbits, each of which can be read in a few minutes but will stimulate your thought for many days to come. Some are very basic, others more involved, but he provides a clear explanation of each. Some refer to math computations that we might not all be familiar with, but this is not a distraction from the main points being made even in these few cases."

A soup-to-nuts introduction to small, economical sailing craft

Trailer sailers--the smallest, most economical sailboats with sleeping accommodations--are a popular platform for learning the basics of sailing and are often considered to be the entry level to cruising under sail. Author Brian Gilbert shows how trailer sailers can be the ideal craft for a lifetime of enjoyment, including serious, long-distance cruising. This book covers all the bases, including how to inspect, buy, and equip a boat; how to trailer, sail, navigate, and cruise in small boats; how to use communications and navigation equipment; and more.

This book is a facsimile reprint and may contain imperfections such as marks, notations, marginalia and flawed pages.

The definitive guide to a critical, hotly debated topic

How should a sailor cope with storms at sea? Some advocate heaving-to, others running off. Some say trail a sea anchor over the bow, others a drogue astern. The stakes in the discussion couldn't be higher, or the consensus lower. Finally, preeminent sailor/author Hal Roth offers a practical strategy that can evolve and respond as storms grow stronger.

For plotting a vessel's position to a tenth of a mile.

Beyond Acceptable Risk reports on ten Northwest Sea Disasters of charter boats and commercial fishing vessels, and points out guidelines for safety at sea for recreational boaters and commercial operators.

A FASCINATING INVESTIGATION OF HOW WE NAVIGATE THE PHYSICAL WORLD, "INNER NAVIGATION" IS A LIVELY, ENGAGING ACCOUNT OF SUBCONSCIOUS MAPMAKING.

Why are we so often disoriented when we come up from the subway?

Do we really walk in circles when we lose our bearings in the wilderness?

How -- and why -- do we get lost at all?

In this surprising, stimulating book, Erik Jonsson, a Swedish-born engineer who has spent a lifetime exploring navigation over every terrain, from the crowded cities of Europe to the emptiness of the desert, gives readers extraordinary new insights into the human way-finding system.

Written for the nonscientist, "Inner Navigation" explains the astonishing array of physical and psychological cues the brain uses to situate us in space and build its "cognitive maps" -- the subconscious maps it employs to organize landmarks. Humans, Jonsson explains, also possess an intuitive direction frame -- an internal compass -- that keeps these maps oriented (when it functions properly) and a dead-reckoning system that constantly updates our location on the map as we move through the world. Even the most cynical city-dweller will be amazed to learn how much of this innate sense we use every day as we travel across town or around the world.

Both a scientific and a human story, "Inner Navigation" contains a rich assortment of real-life insights and examples of the navigational challenges we all face, no matter where or how we live. It's a book that is as provocative to ponder as it is delightful to lose yourself in. Don't worry: Erik Jonsson will help you find your bearings.

The Army version "Map Reading and Land Navigation" is the simplest and most straightforward explanation of how to get around with just a compass and a map. This guide is perfect for any outdoorsman or for teaching Boy Scouts how to use a compass.

Plan includes: San Juan Bahia de Ponce Puerto Arecibo Bahia de Mayaguez