and the sine of zero degrees is what?

(hint: zero, meaning zero needed addition power to "climb the bow wave" at hull
speed)

A "wave" traveling in water, air or even an electromagnetic wave traveling
in a vacuum, is limited by certain rules.

Don't forget, the "wave" may appear to move forward, but the water is only
moving up and down.

--
Dennis Gibbons
S/V Dark Lady
CN35-207
email: dennis dash gibbons at worldnet dot att dot net
"Sakari Aaltonen" wrote in message
...
I have seen lots and lots of references to the formula "X times
square root of waterline length" as defining hull speed with X
normally about 1.3 (speed in knots, length in Imperial feet.)
However, I have never seen an explanation of this.

Pictures of boats "trapped" between their bow and stern waves seem
to make sense. But they do not explain why a long wave would travel
faster than a short one.

Surely there is a book with the theory?


Thank you,
Sakari Aaltonen

Don't forget, the "wave" may appear to move forward, but the water is only
moving up and down.

To be more accurate - it is going round and round. There is an up and down
component, to be sure, but .......

Steve