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Ship-model
Scaling Effects.
Physical scaling effects time and speed, but the outcome is the same in
performance and sensation. Scaling factors are as follows:-
Distance.
All linear measurements are 1/25th of actual full size.
One nautical mile (1852 metres) becomes 74.08 metres scaled. One
cable becomes 7.4 metres, about the length of the handy-size ship
model.
Initially, it may be helpful to judge distances in known ship's
lengths,
or beam, or length of nearby tug etc.
Time.
All model times are 5 times faster (5 being the square root of the
scale) than real time. 1 hour becomes 12 minutes.
Speeds.
The log and wind speed sensors' data is automatically multiplied by
5 (square root of the scale), so that the displays show scale
knots.
For example, a real wind speed or ship model speed of 3 knots will
display
as 15 knots.
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