Errata    
For The Radar Book    
For Local Knowledge     
For GPS Instant Navigation    

The Radar Book

Click here to view the Errata Sheet for the first edition of The Radar Book in PDF format. 

Note - These errata apply to the first edition only. The errors have been corrected in the 2nd Edition of The Radar Book.

   

Local Knowledge--A Skipper's Reference

 

Page 76

In the table "Strategies for Transiting Yuculta Rapids, Gillard Passage and Dent Rapids/ Northbound/At Low Water Slack/-at 9 knots", replace the word "earlier" with the word "later". Replace the text with the following:

"-at 9 knots--Faster vessels may transit Yuculta Rapids a little later in order to arrive at Dent Rapids at slack water."

Page 82

The values provided in the example do not match the plotted values in the graphic on Page 83. Replace the text on Page 82 with the attached PDF.

Pages 130 - 133

With the recent change to Vessel Traffic Services in British Columbia, the map of Vessel Traffic Services Zones needs to be updated. Please view the  attached PDF.

   

GPS--Instant Navigation--2nd Edition

Note on GPS Accuracy Standards: 
In spite of the formal GPS Service Standard (civilian), research conducted by the Federal Aviation Administration (FAA) in 2016 reveals that well designed and installed GPS receivers are capable of resolving positions to much greater levels of accuracy than the official accuracy standard.

From the GPS Service Standard (civilian) FAA GPS Performance Analysis Report 2016

Global Average Position Accuracy Standard

Horizontal error            < or =    9 m       95% of the time

Vertical error               < or =    15 m      95% of the time

Measured Global Average Accuracy

Horizontal error           < or =    2.297 m

Vertical error               < or =    4.070 m

Worst Site Position Accuracy

Horizontal error            < or =    17 m       95% of the time

Vertical error                < or =    37 m      95% of the time

Measured Worst Site Position Accuracy

Horizontal error            < or =    6.485 m

Vertical error               < or =    4.884 m

Time Accuracy

Time error                    < or =    40 nanoseconds

Measured Accuracy

Time error                   < or =    10 nanoseconds

(August 11, 2023)

 

 

   

 

 

 

 

 

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