Hints and Tips
- Ye-olde Cocked Hat Position Fix
- Windward Tacking Cone
- Using AutoRoute Express + Streets and Trips
Ye-olde Cocked Hat Position Fix
The 'measure distance' feature in
GPS Utility has a hidden secret. You can
make the rubberband line remain on the chart once drawn.
To do this:
measure the distance in the usual way using the 'Identify/Measure' tool.
- left-click-hold and drag the end of the line
- when the desired feature is reached or covered, hold the left button down
and press right button down too,
i.e. hold down both buttons then release left and then release right button.
Voila! the line remains.
- using your hand-bearing compass take 3 bearings of identifying marks
and do the above 3 times, one for each bearing. You now have the
ye-olde cocked hat position fix
- annotate the position with relevant data.
- GPS Utility version 399h can display the reciprocal bearing when
'Identify/Measure' is being used. You need to go to Options|Map settings
and enable the Echo reciprocal bearing.
This function gives the bearing back from the feature to your 'yot'.
- REFRESH or REACTIVATING the window will erase the temporary lines.
If you want to keep a copy of the position fix use 'Save as' to save the
images as a bitmap using a new filename.
Windward Tacking Cone
You can also use the right button draw line function outlined in the
to draw a temporary leading line into an anchorage
The 'Windward tacking cone' is a method of getting
home to windward (most Coastal navigation books discuss this).
You can draw a windward cone as follows:
Note: This saves working out Waypoints and programming into your GPS.
- from your destination, draw your cone lines out covering the area you
- save that chart under a separate filename.
- when you are beating back home you can then load that chart,
draw in your tacklines and 'tack-angle' based on your present position
using the right button method.
- GPSU will now track your position along the tacklines showing you exactly
when to tack next.
- If you want you can draw a continuous track keep the
left button down all the time clicking the right button at each 'turn'.
REMEMBER THOUGH!! IF YOU REFRESH YOU LOSE THE TACKLINES (unless saved).
however, you could also digitize it as a temporary track.
Using AutoRoute Express + Streets and Trips
When you import files from 'AutoRoute Express' or 'Streets and Trips', capture
the map image as well using a a program such as Paint Shop Pro.
Alternatively copy the map to the clipboard (Edit, Copy Map from the menu) and
paste into whatever bitmap editor you have. Save the map as an
image as a file (BMP for Standard Edition).
In GPS Utility, import the route data file which will contain the route Start,
End and any intermediate Stop point that you have defined. You can use the Start
and End points to calibrate (register) the map image that you have saved as well.
Now you can quickly digitize the track or create a variation on your route.
This gives you more flexibility in tailoring the route/track to suit your own
Note: the map scale gives you an indication of metres/pixel. If you can digitize
to an accuracy of 2 pixels, then you will know how accurate this will be on the
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