Note - These errata apply to the
first edition only. The errors have been corrected in the 2nd Edition of The
The MV Stockholm was a Swedish
ship, not Norwegian.
Pages 11 to 15
In the process of enhancing the
radar display images for the book, errors have been introduced into the images
as indicated below:
Figure 1-7 In the
screencapture, numeric values of 90.0oR and 0.169 NM are given
for the position of the cursor, but the cursor is not visible in the image.
Figure 1-9 In the
screencapture, numeric values of 62.5oR and 1.119 NM
are given for the position of the cursor, but the cursor is not visible in
the image. Also the EBL has been rotated to a position that is not
consistent with the numerical read-out.
The cursor and
the VRM circles were removed in order to simplify the image but the
numerical VRM indication remains. In Figure 1-13, the VRM indication shows
that the VRM is outside the display.
refers to "Left" and "Right".
refer to "Upper right" and "Lower right".
Page 81, Middle Text Box
The text in the text box has been
cut short. It should read as follows " ‘Radial thickness’ means the
thickness of a ‘pip’ or other image on the display measured from the
center of the display to the edge."
Page 164, Figure 9-6
The caption to the right has been
cut off short. The last sentence should read, "The land echo does not
rotate, but with the change in course, it now follows a different RM line as
Pages 211 and 221
According to the American
Practical Navigator, "aspect" means the relative bearing of
own ship from target ship, measured 0o to180o port (red)
or starboard (green). This means that when the aspect is 76o
red, you are viewing the target ship from 76o on its port side.
Therefore, in a practical sense, the definition of "aspect" at the
bottom of page 211 and on page 221 is also correct.
Page 212, Fig A-9
The aspect is actually 73o.
Page 213, Figure A-10
The aspect is actually 114o.
Page 213, Figure A-11
The arc of the aspect has been
incorrectly drawn. It should lie between the TM of the target A’ and the
bearing line from the A’ to the center of the maneuvering board.
Page 215, Caption for Figure A-13
"Course at 12:39" should
read "Speed at 12:39".
Pages 218, 219, Minimum Range and
Minimum Range Resolution
The theoretical limits for minimum
range and range resolution are a result of the characteristics of the pulse
length, but the practical limits also are related to the resolution of the
display, and the degree of anti-Rain Clutter applied. Consequently the actual
specified values differ from the theoretical values given in the table on page
to view the Errata Sheet for the first edition of The Radar Book in