The 13th edition of this bestselling book is proof of the success of Mary Blewitt`s concise & clear style in explaining a particularly difficult skill, & it has been the bible for many generations of ocean navigators. Since this book was first published, the huge advances in electronic navigation have transported most offshore navigators to a world of press-button convenience. However, there is still a vital need for traditional skills when things go wrong: batteries can fail, aerials go overboard, & electronics have been known to get wet.A bestseller for over 65 years, Celestial Navigation for Yachtsmen is a model of simplicity & clarity. The worked examples require only straightforward addition & subtraction, which explains why this book has truly earned its reputation for admirable conciseness & for making a tricky subject easy to underst&. This edition has been thoroughly revised by Andy Du Port, the highly respected ex-editor of Reeds Almanacs.` The ”bible” of navigation for generations of yachtsmen...worth its weight in gold` Sailing ...

Celestial navigation is an essential tool for those who do not wish to be caught short when modern technology fails. The basic process is simple
- take a sight with a sextant, establish a secondary reference or benchmark sight, compare the two sights & plot the result of the comparison on a chart. Schlereth demonstrates how to take sight by the sun, moon, stars & planets, discussing the advantages of each method. The reader is taken through several examples & situational illustrations.
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Learn--and Appreciate--What Master Navigators Have Practiced for Centuries in This Hands-on, Friendly Approach. Celestial navigation, in all its forms, is nearly as old as mankind. Anyone who can master its intricacies stands at the end of a long line of master navigators that is centuries old--an expert among many who would be lost with electronics. David Berson, a columnist for Ocean Navigator magazine & an instructor at both the Ocean Navigator School of Seamanship & onboard the training schooner Ocean Star, offers here an approach that is refreshing, unique, & sure to attract a new generation of readers looking to demystify this essential art for sailors. Through his hands-on coursework Berson has developed a practical & learnable method of teaching that has appealed to a new generation of students. He will share his proven method here for the first time. While many books on celestial navigation insist this age-old art is needed only when electronics fail, Berson uses a unique approach that allows boaters to combine both the modern & the traditional. No other books does that. In Celestial Navigation, as he does in his popular column & classes, Berson simplifies the math that so often frightens & deters potential students. Berson takes the same approach with his writing that he does with his classes & columns, informal true-life anecdotes that entertain as well as educate. To Berson, celestial navigation is personal & valuable. Anyone reading this book will catch his contagious enthusiasm. Skyhorse Publishing, as well as our Sports Publishing imprint, is proud to publish a broad range of books for readers interested in sports--books about baseball, pro football, college football, pro & college basketball, hockey, or soccer, we have a book about your sport or your team. In addition to books on popular team sports, we also publish books for a wide variety of athletes, including books on running, cycling, horseback riding, swimming, tennis, martial arts, golf, camping, hiking, boating, & so much more. While not every title we publish becomes a New York Times bestseller or a national bestseller, we are committed to publishing books on subjects that are sometimes overlooked by other publishers & to authors whose work might not otherwise find a home. ...

This is a unique notebook from Cavallini & Co. with a beautiful & robust cover featuring a vintage map of the world by V.C. Finch. It

Includes:: 144 lined pages, an inside rear pocket & a handy elastic band to keep it tidy. This is an ideal travel companion to write notes, thoughts & plans.

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Topographic coverage of mainland Spain at 1:50, 000 in the MTN50 (Mapa Topográfico Nacional) series from the Centro Nacional de Información Geografica, the country’s civilian survey organization. The maps have contours at 20m intervals, enhanced by relief shading, plus colouring and/or graphics to show different types of terrain, vegetation or land use. Boundaries of national parks & other protected areas are marked. In addition to all the usual information featured on topographic mapping at this scale, detailed presentation of the road & rail networks, rural tracks & paths, etc, the maps also show campsites & mountain refuges. On more recent editions some GRs, the official long-distance hiking routes, are also marked (although not as clearly as on hiking maps from other publishers). Each map covers 29.5x 18.5 km (with adjustments in the border or coastal areas). The maps have a 1-km UTM grid, plus margin ticks for latitude & longitude at 1` intervals. Map legend is in Spanish only.HOW TO CHOOSE THE RIGHT 50K MAP: all the titles in CNIG’s 200K Provincial Road Maps series at 1:200, 000 are overprinted with the grid for the 1:50, 000 maps & can be used to see the area covered by each 50K title. TO SEE THE LIST OF TITLES IN THIS SERIES PLEASE CLICK ON THE SERIES LINK.PLEASE NOTE
- MAP TITLES: the grids shown on our website serve both the civilian & the military 1:50, 000 topographic series. Although the areas covered by maps in both series are identical (apart from some border or coastal sheets), occasionally map titles differ – only one title is shown on the grid, usually the military one. In Galicia, the Basque country & in the Catalan speaking areas the tendency now is to use local place names rather than the often better known Castilian ones. Where possible, both versions are included in our titles. Map titles listed on our website are based on information received by us at the time of publication, but sometimes maps arrive showing a completely different title! As long as the map number is as ordered, the correct map has been supplied.
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Topographical survey of Belgium at 1:20, 000 from Nationaal Geografisch Instituut / Institut Géographique National, the country’s national survey organization. Each 20K map covers one quarter of the corresponding 1:50, 000 map (with adjustments in the border & coastal areas). The maps provide all the information expected of topographic mapping at this scale & in addition have an unusually large amount of vegetation and/or land use information (different types of woodlands, gardens, orchards, heath, etc). The maps have a 1-km UTM grid, with margin ticks for latitude & longitude at intervals of 1`. Map legend & a glossary of terms used on the maps include English. Stanfords keeps as regular stock 20K maps for the World War I battlefields around the Ypres, Messines & Passchendaele, & for the area of the Battle of Waterloo. The 1:20, 000 survey covers the whole of Belgium & maps for other regions can be supplied as special orders. To see the list of titles in this series please click on the series link.PLEASE NOTE: the Long-Distance Footpaths Map of Belgium at 1:300, 000 which shows the division of Belgium into the 50K survey sheets can also be used to see in more detail coverage by the 20K maps. ...

Topographical survey of Belgium at 1:20, 000 from Nationaal Geografisch Instituut / Institut Géographique National, the country’s national survey organization. Each 20K map covers one quarter of the corresponding 1:50, 000 map (with adjustments in the border & coastal areas). The maps provide all the information expected of topographic mapping at this scale & in addition have an unusually large amount of vegetation and/or land use information (different types of woodlands, gardens, orchards, heath, etc). The maps have a 1-km UTM grid, with margin ticks for latitude & longitude at intervals of 1`. Map legend & a glossary of terms used on the maps include English. Stanfords keeps as regular stock 20K maps for the World War I battlefields around the Ypres, Messines & Passchendaele, & for the area of the Battle of Waterloo. The 1:20, 000 survey covers the whole of Belgium & maps for other regions can be supplied as special orders. To see the list of titles in this series please click on the series link.PLEASE NOTE: the Long-Distance Footpaths Map of Belgium at 1:300, 000 which shows the division of Belgium into the 50K survey sheets can also be used to see in more detail coverage by the 20K maps. ...

A detailed, colour survey map from the Portuguese Military Survey's M782 series. Each map in this series has contours at 20m intervals with supplementary contours at 10m intervals. One major advantage the military mapping has over the civilian equivalent is that the legend is in English as well as Portuguese. This legend

Includes:: roads, railways, buildings, spot heights, vegetation type, fluvial information, scree, dunes, churches, ruins, etc. Latitude & longitude ticks are show at 10' intervals. Recently revised sheets also have a UTM grid at 100m intervals. Vertical Datum: Mean Sea Level at Cascais Harbour Projection: Transverse Mercator

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Topographic survey of Portugal at 1:50, 000 from the Instituto Geográfico do Exército, the country’s military survey organisation. The maps have contours at 20m intervals & in addition to the standard features shown on topographic mapping at this scale also indicate various types of terrain or vegetation (s&, terraces, rocks, woodlands, vineyards, etc). Each sheet covers an area of 32 x 20km (20 x 12.5 miles approx). The maps have a 1-km UTM grid plus latitude & longitude coordinates for the map corners. Map legend & a glossary of terms used on the maps include English.EDITION DATES: most titles in this series date from 1990s or later. To see all the titles in this series please click on the series link. ...

Topographic survey of Portugal at 1:50, 000 from the Instituto Geográfico Português, the country’s civilian survey organisation. The maps have contours at 25m intervals & in addition to the standard features shown on topographic mapping at this scale also indicate various types of vegetation (vineyards, olive groves, etc). Each sheet covers an area of 32 x 20km (20 x 12.5miles approx). The maps have latitude & longitude margin ticks at 1’ intervals & UTM coordinates for the map corners – each sheet also shows conversion details from BBLx (Bessel-Bonnie system, Datum Lisbon) to UTM. Map legend is in Portuguese only.EDITION DATES: most titles in this series have now been updated in the 1990s or later. To see all the titles in this series please click on the series link. ...