Bridge clearance for a CP25?

[legends117]

Hi All - I checked the interwebs, but could not find the bridge clearance for the CP25.  Can anyone provide me with the answer?  Thanks - JD

[relamb]

Take a line and tie it to your main or jib halyard, and hoist it to the top.
Hold the bottom end of the line at the water line.
Mark it, lower the line, and measure the length. Since it's the hypotenuse of the triangle it will be a little longer than the air draft.
Add on any extra height for antennas or windex or anything else sticking up past the top of the mast.
.... assuming you can't find the answer anywhere else.

Be aware that when going under a bridge, waves can toss you up and down a few feet, and I've hit my antenna even with several feet of extra clearance.
Rick

[Tom L.]

Contact Com Pac. They have that info.

[skip1930]

Don't have any idea about the CP-25 but on the CP-19 it is 25 foot from top-o-mast to waterline. The add then 30 or so inches for the radio whip.

skip.

[Ron]

I have a 25,but that particular stat eludes me at the moment ,but if you figure around 35-37 without whip you are pretty close.
When in doubt have the tender lift,after all it is your mast.

[Dogboy]

I "guestimated" based upon the mast height that it was around 38 ft to the water line.  I use 45 ft as my comfort zone for clearance, but there is only 1 bridge I ever go under, and I don't need to do that.  If I was in a place with lots of bridges I'd be more certain of my measurement.

[legends117]

For anyone that cares:  Rich Hutchins informed me that I "should figure about 33 ft waterline to top of mast."  So, I assume that he should know.

Thanks for all y'all's responses.

[Dogboy]

hmm, not questioning it, but that means I SERIOUSLY messed up my measurement.  I'll try again and see if I get closer to that.

[BobK]

The CP-27 is 35'8".  That should be correct.

[legends117]

hmm, not questioning it, but that means I SERIOUSLY messed up my measurement.  I'll try again and see if I get closer to that.

Assuming the image on SailboatData is correct for a CP-25 and is a scale drawing (which I am not sure of, b/c the port lite configuration is are not accurate, but lets assume that the image is a true representation of the hull and mast); I measured the LWL in the image and created a ratio of that measurement over the known dimension of 21', then used that ratio on the measurement from the top of the mast to the water line shown on the image.  That gave me a measurement of about 31.5'  So, I think 33' is probably a pretty safe number.

[moonlight]

The mast, when down, extends from the pushpit to the pulpit, so 25~27'.  And it starts it's life 6~8' out of the water.  33~35'.

[Dogboy]

What I did wrong...I measured mast top to side-deck, then added water height to coach top.  Oops.