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This book has been used for 30 years, updated periodically as needed. More than 20,000 students have successfully learned ocean navigation from these materials and gone on to cross oceans or circumnavigate the globe. This book covers how to find position at sea from timed sextant sights of the sun, moon, stars, and planets plus other routine and special procedures of safe, efficient offshore navigation. No previous navigation experience is required. The only math involved is arithmetic (adding and subtracting angles and times). This is a practical, how-to-do-it book, which also includes clear explanations of how it works and how to do it well. Plus this book includes other crucial factors of...
In the spirit of early Bowditch editions, we offer navigation details of a full ocean passage as an excellent way to learn the ropes of practical celestial navigation. With your own tables and plotting sheets, you can analyze 224 timed sextant sights of sun, moon, stars, and planets to obtain 26 position fi xes to fi nd your way along a 2,800-nmi voyage lasting 17 days. Solutions are provided by computation, workforms, and detailed plots using universal plotting sheets. After completing this passage you will be prepared to navigate by celestial navigation on your own, whether you need to or choose to. Also includes notes on optimizing sight analysis, hurricane tracking, DR error analysis, ocean currents, and use of visible light ranges for nighttime arrivals.
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This exercise book has been used in onboard navigation training courses, power and sail, for many years. It was originally designed for students to carry on with practice when they were not on watch getting direct instructor training during extended training voyages. It can be used for day sails or long coastal passages. Now available to the public, you can use this workbook to guide your own study underway to master techniques and procedures learned from classroom or home study. Once you master the skills of these exercises you can be confi dent you have a practical working knowledge of navigation. These are skills and procedures that every navigator should know. It is designed to be worked in any waterway, underway or at anchor, at various times during one voyage or many. Instructions and forms are provided to document your work. The next step beyond textbook and classroom. Topics include... Basic Chart Work Radar Navigation Rules Piloting Electronic Charting GPS Navigation Dead Reckoning Weather Celestial Navigation Navigation Challenges Plus... Personal Logbook Plotting Sheets Valuable References "
"This workbook is intended to supplement the text Modern Marine Weather with practice questions and convenient resources."--title page verso.
Practical knowledge for Inland, Coastal, and Ocean waters that makes your sailing safer and more efficient. Special topics in navigation and weather from the "Burch at the Helm" column in Blue Water Sailing magazine.
The ship's logbook has been a maritime tradition since ancient times. It is used to document the voyages and movement of the vessel and events that take place on board related to safe navigation and the well being of the crew and cargo. Designed for sailors by sailors. The simple layout of these record sheets has been tested over thousands of miles of offshore and coastal sailing, racing and cruising.
Hawaiians were stand-up paddle surfing (known as SUP), in the 50's and e60's, but the sport was first seen on the US mainland in the early 2000s, when surfers Laird Hamilton and Rick Thomas brought it to California. But now you see SUP popping up everywhere, it's ranked as the fastest growing sport in the US by the Outdoor Industry Association.Longtime stand-up paddler and instructor Rob Casey has authored the first and only comprehensive guide to the sport. From choosing the right gear, to stroke techniques (j-stroke, Tahitian technique, sculling brace) and fitness advice, Rob will have you stand-up paddling in no time. Specific chapters focus on flat water paddling, surfing, and river and tidal rapids paddling to show you exactly what you need to take your SUP skills and knowledge to a specific environment. Whether you want to learn about tides and expedition-planning in flat water, or how to forecast waves and current for surfing, or how to prepare for rooster tails andusing river eddies to your advantage, it's all here in this easy-to-reference guidebook from a SUP expert.
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An ambitious vision for design based on the premise that data is material, not abstract. Data analysis and visualization are crucial tools in today's society, and digital representations have steadily become the default. Yet, more and more often, we find that citizen scientists, environmental activists, and forensic amateurs are using analog methods to present evidence of pollution, climate change, and the spread of disinformation. In this illuminating book, Dietmar Offenhuber presents a model for these practices, a model to make data generation accountable: autographic design. Autographic refers to the notion that every event inscribes itself in countless ways. Think of a sundial, for examp...