This Book compliles Current Charts and Tide Prints for Puget Sound. Current Charts show the values of the currents at each reference station. There is one chart for every hour throughout the cycle. They are indexed to the tidal current at Admiralty Inlet. Tide Prints show the flow patterns and how they evolve throughout the current cycle. There is one print for every 3 hours throughout the cycle. They are indexed to the tide height in Seattle. Comparing Tide Prints and Current Charts shows the locations of eddies and bands of current, and how these bands and eddies move and interact as the...
This Book compliles Current Charts and Tide Prints for Puget Sound. Current Charts show the values of the currents at each reference station. There is...
The barometer remains the most important tool for evaluating and predicting the weather. This book explains why knowing accurate values of the atmospheric pressure can improve this process and benefit all applications. Ways to evaluate and calibrate aneroid and electronic barometers using readily available data by Internet or telephone are clearly described. Tactical applications to marine navigation are covered. The book also includes worldwide average monthly pressures and their standard deviations. With the exception of trained meteorological crews, barometers in the past were used at sea...
The barometer remains the most important tool for evaluating and predicting the weather. This book explains why knowing accurate values of the atmosph...
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...
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 b...
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...
For all radar users, recreational and professional. Covers the use of radar for chart navigation, blind pilotage, and collision avoidance. This Workbo...
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...
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 cele...
Worldwide Mean Sea Level Pressures and Standard Deviations for Weather Analysis and Tropical Storm Warning. Informed awareness of barometric pressure leads to safer and more efficient navigation. The unique data in this book along with an accurate barometer opens up new avenues of weather analysis underway.
Worldwide Mean Sea Level Pressures and Standard Deviations for Weather Analysis and Tropical Storm Warning. Informed awareness of barometric pressure ...
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...
This book has been used for 30 years, updated periodically as needed. More than 20,000 students have successfully learned ocean navigation from the...
