Features of Ansar 2 and
4
|
Mostly applies also to
other electronic compasses
where markers are set for Mean wind
direction for each tack.
|
Tacktick
Race master and Race compass, Aug.
2000.
|
Relative size of lift or header is shown
directly. No figures to read, remember,
write or compare. Unique.
Set up and read Ansar 4. |
To get relative size of lift or header you have
to compare indication with noted figures
of Best Lift and Worst Header. |
No, same as
Sailcomp |
The compass clearly indicates if
lift gets better than before: the pointer
goes beyond the best lift marker. Not to be missed
as it can mean a shift in mean wind direction. Unique.
Set up and read Ansar 4. |
To know if lift gets better than
before you must keep notes of Best Lift, for both
tacks, and compare indication with the
noted figures. |
No, same as Sailcomp |
To set up before racing
you simply move the markers until they indicate
best lift on each tack. No calculations needed. Unique.
Set up and read Ansar 4. |
To set up before racing you sail on both tacks
and note Best Lift and Worst Header. Then
calculate mean headings. Input headings
in compass. |
Same as Sailcomp |
To adjust while racing, when the mean
wind direction has changed, you simply move the
markers to the new Best Lift positions. Unique.
Set up and read Ansar 4. |
No method given in instruction. You can't
use the method just above (you can't sail in the
worst headers when racing). |
Instruction says adjust Mean Wind
Direction, but it doesn't say how you calculate
the amount to adjust. |
| The adjust while racing, when the mean
wind direction has changed, can be done for
both tacks at once. |
No, you can't do it for the other tack until
you have tacked. If you forget it the
compass will give wrong indication... |
Yes. |
The Set up before racing is time efficient
because you are only setting the markers for Best
Lift.
Set up and read Ansar 4. |
Too gather the same amount of information for
Set up before racing takes twice as long
because you have to see both Best Lifts and Worst
Headers on both tacks before you have Mean Wind
direction and can set the compass. |
Same as left. |
| Visibility of the pointer/markers is
unaffected by e g sunlight. |
LCD indicators usually have varying
visibility depending on light/viewer angle. |
Same as left. |
Automatic compensation, in keelboats, for
the change of angle between tacks when wind
strength increases, Ansar 4. Unique.
Automatic compensation |
No. |
No. |
| Resolution is about one degree. |
Resolution above 10 deg. is 5 deg. - too
much. The wind may shift 4.5 deg. and there
will be no change in indication. Also it may shift
.5 deg. and the indication will change 5 deg. |
5 deg. for Race compass. Far too large,
see left. |
| Allowed in all classes. Some classes
prohibits electronic compasses. |
No. |
No. |
| No battery required. No risk
compass stops working because of flat battery. |
Battery required. In small boats which normally
has no battery it requires a separate
installation. |
Internal battery. Must be charged or
compass doesn't function. |
| No electrical circuitry that can get
damaged from water seeping in. |
Can get damaged. |
Can get damaged. |
| Supplied instruction for set up before
start for oscillating wind shift gives
a proper set up. |
Yes, but requires taking notes. And can not
be used while racing. |
Same as left. |
Supplied instruction tells you how to adjust
the compass when the mean wind direction has
changed.
Set up and read Ansar 4. |
No. The instruction, on internet (aug. 2000), doesn't
even deal with this most important subject. If
you are not able to do this the compass
becomes useless. |
No method given to calculate amount of
change too be made.
If you can't work this out the compass
can't help you with the wind shifts. |
Adjustments are intuitive and
doesn't require calculations, there is little
need for consulting the manual.
An example for Ansar 4 compass, "adjust the
compass for a new Mean wind direction":
Move the windward Best lift marker to the position
of the white pointer. Move the other Best lift
marker the same amount in the same direction.
See picture at top of page.
Set up and read Ansar 4. |
No.
You must some way work out the new mean
wind directions for both tacks. Instruction
doesn't say how.
Again you can not use the method given to
set up the compass before the start as you can't
sail in the worst headers when racing. |
No.
Instruction: "Ensure the Race Master is in ‘Wind
Mode’ then press the down arrow key. The Mean Wind
Direction is now displayed and can be adjusted
with the up or down arrow keys. Alternatively,
reset the Race Master by one of the previous
methods."
Comment: It is not said to which value to adjust.
This is needed to get the job done. |
| The compass is able to account for the
tacking angle of the boat. |
No. |
Yes. |
| Price around US$ 400 for a 100 mm
compass. |
Sailcomp
I don't have current price. Used to be some US$ 800 in Sweden. |
Race Master US$699, Aug. 2000.
Tacktick |