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Allow me to chime in on this a little.  Using the averager in the air
is to compensate for a very regular and smooth motion. Typically, the
navigator has his finger on the sextant knob, and tries to keep the
body in the center of the bubble as the airplane goes through its
motion.  He may begin with increasing the altitude up to a degree of
change, and then to follow it down two degrees, and then back up two
degrees, and so forth until the averager has run its two minutes of
operation. Thus, he has compensated for the natural motion of the
airplane. If the air is rough, he cannot keep the body centered, but
he at least knows what the overall trend is, and does his best to
regain collimation as the sight progresses.  Thus, the averager plays
no part in compensating for the rough air, but only the natural
motion of the airplane which the two minutes of time is predicated upon.

Ken
On Mar 6, 2007, at 3:12 PM, Bill wrote:

>
> Alex wrote
>
>> However, on a small boat, which sometimes swings like crazy
>> on the waves, I do not exclude that the averager may be of some use.
>> One just has to experiment.
>
> Thank you for the explanation.  Fascinating.
>
> Do you feel one would stand a chance of keeping the bubble and object
> aligned on s small craft in heavy seas?
>
> Bill
>
>
>

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