Coronado 27 faster than I thought.
 

Hahahaha! Perhaps the problem is is in the LOA?

Cheers MC

Simple Simon wrote:
FEAR THIS!

Now I understand why my boat is so uncommonly fast.

It is because she has a LWL of 25 feet instead of the
commonly listed 22 feet.

You can see and measure for yourself

http://captneal.homestead.com/Sheshines.html

Use the top picture and get out your dividers.

Measure the LOA. You computer screen size will make your
measurments vary from mine but not too worry use what you get.

The LOA I measured at 27 feet is 12.5mm
The LWL I measured at X is 11.6mm.

Now all we have to do is solve for X

X times 12.5 = 27 times 11.6

or X = (27) (11.6) divided by 12.5

or X = 25 feet.

With a LWL of 25 feet the hull speed is the same as
Moroon's 30-footer and Booby's 32 footer.

A picture is worth a thousand words.

Coronado 27 faster than I thought.
 

No, LWL is a straight line measurement just like LOA.


"Wally" wrote in message ...
"Simple Simon" wrote in message

LWL is measured in a straight line from the water at the bow
to the water at the stern. LOA is measured from the stem fitting
(not the plow anchor, mind you) to the transom at its longest
point in a straight line.

Isn't the LWL measured from stem to stern along the path that the water
takes? Hence, for a given 'straight' LWL, a beamy boat would have a slightly
longer LWL than a narrower boat. Of course, this would mean that an estimate
based on a straight line measurement would be slightly short.


--
Wally
I demand rigidly-defined areas of uncertainty!
www.art-gallery.myby.co.uk

Coronado 27 faster than I thought.
 

"Simple Simon" wrote in message

I think the original figure is with an empty boat that floats
much higher up in the water. Even then I think the LWL
would be greater than 22 feet, though.

I would agree with that - 3 feet is a lot to lose. Looking at the port-side
view on...

http://captneal.homestead.com/haulout.html

....I estimate 22 feet from the stern to end somewhere between the stand
under the bow and the dark object in the background just to its left.


Another thing is
the shoal keel is about five hundred pounds heaver
than the stantard keel so mine, which is a shoal keel,
floats deeper in the water to begin with even when not
loaded for cruising and living aboard.

Does the line of your blue antifoul leave the same nominal freeboard as
Coronado 27s with the standard keel?


--
Wally
I demand rigidly-defined areas of uncertainty!
www.art-gallery.myby.co.uk

Coronado 27 faster than I thought.
 

"Simple Simon" wrote in message

No, LWL is a straight line measurement just like LOA.

Yup, some subsequent Googling confirms - cheers.


--
Wally
I demand rigidly-defined areas of uncertainty!
www.art-gallery.myby.co.uk

Coronado 27 faster than I thought.
 

Maybe you could sink it to the gunwhales and it'd be as fast as a
26.6" LWL yacht?

Ozzy, go to sleep NOW. You can't say anything funnier than what you wrote
above!


RB

NO, NO, NO!!!!
 

LOA (Length Over All) is a measurement from the tip of the bow, around the
edge of the deck - as in toerail - , to the edge of the stern). LOD (Length
Over Deck) is the straight line measurement you describe.

Therefore, two 30' yachts, one with a 12' beam and the other with a 10' beam
will have different LOD's!


"Simple Simon" wrote in message
...
No, LWL is a straight line measurement just like LOA.


"Wally" wrote in message
...
"Simple Simon" wrote in message

LWL is measured in a straight line from the water at the bow
to the water at the stern. LOA is measured from the stem fitting
(not the plow anchor, mind you) to the transom at its longest
point in a straight line.

Isn't the LWL measured from stem to stern along the path that the water
takes? Hence, for a given 'straight' LWL, a beamy boat would have a
slightly
longer LWL than a narrower boat. Of course, this would mean that an
estimate
based on a straight line measurement would be slightly short.


--
Wally
I demand rigidly-defined areas of uncertainty!
www.art-gallery.myby.co.uk

Coronado 27 faster than I thought.
 

You're right - you lost considerable freeeboard aft. Is your transom supposed to be
underwater?

Before you start "spending" your extra speed, remember that Waterline does not
automatically produce speed. If your LWL was increased by adding 2000 pounds
displacement (that only lowers you 3 inches) then your displacement went from 6200 to
8200, which drops your SA/disp down to a dismal 10.7! While your ultimate speed may be
faster, your medium air performance is now pathetic.


"Simple Simon" wrote in message
...
I think the original figure is with an empty boat that floats
much higher up in the water. Even then I think the LWL
would be greater than 22 feet, though. Another thing is
the shoal keel is about five hundred pounds heaver
than the stantard keel so mine, which is a shoal keel,
floats deeper in the water to begin with even when not
loaded for cruising and living aboard.


"Wally" wrote in message
...
"Simple Simon" wrote in message

Finally, a voice of reason. Thank you Wally.

Can't argue with the numbers. If the 22' is an original Coronado spec, I can
only assume that it was a typo or a misreading of a handwritten note. What
amazes me is that nobody thought to question it until now. You must have had
one of those "wait a minute, that's not right..." moments.


--
Wally
I demand rigidly-defined areas of uncertainty!
www.art-gallery.myby.co.uk

NO, NO, NO!!!!
 

"Ghost" wrote in message news:MR%Ta.20524

LOA (Length Over All) is a measurement from the tip of the bow, around the
edge of the deck - as in toerail - , to the edge of the stern). LOD
(Length
Over Deck) is the straight line measurement you describe.

a.. Length Overall (LOA): The extreme length of the ship along the
centerline is called the length overall.

See: URL: http://web.nps.navy.mil/~me/tsse/Nav...le2/basics.htm


--
Wally
I demand rigidly-defined areas of uncertainty!
www.art-gallery.myby.co.uk

Coronado 27 faster than I thought.
 

PHRF So Cal rates your boat at 228, which makes it slower than a Catalina
27, Pearson 25, Cal 27, even a lowly Mac26x!!! A quick examination of the
list revealed only 2 slower 27 footers, an Ericson and a Tartan, both of
which are miles ahead of your boat, quality wise, that is. Also C&C, O'Day,
and probably a few others I've missed, speed wise, that is.
http://www.phrfsocal.org/
The thing about the ratings for older boats is that they tend to be a little
more accurate as these boats have been around for a while and if they are
faster than their ratings indicate they usually get adjusted to reflect
this.228 is about as fast as any Coronado 26 will ever get, including yours.
I think the thing that would be really humiliating would be to get beat by a
Mac26x!

John Cairns




"Simple Simon" wrote in message
...
FEAR THIS!

Now I understand why my boat is so uncommonly fast.

It is because she has a LWL of 25 feet instead of the
commonly listed 22 feet.

You can see and measure for yourself

http://captneal.homestead.com/Sheshines.html

Use the top picture and get out your dividers.

Measure the LOA. You computer screen size will make your
measurments vary from mine but not too worry use what you get.

The LOA I measured at 27 feet is 12.5mm
The LWL I measured at X is 11.6mm.

Now all we have to do is solve for X

X times 12.5 = 27 times 11.6

or X = (27) (11.6) divided by 12.5

or X = 25 feet.

With a LWL of 25 feet the hull speed is the same as
Moroon's 30-footer and Booby's 32 footer.

A picture is worth a thousand words.

NO, NO, NO!!!!
 

That's silly. Are you saying my cat's LOA is 9 feet longer?

I can find a number of sources that say LOA is straight line, not around the side. Here's
one:
http://www.docksidereports.com/boat_specifications.htm

The measurement your talking about may play some part in a handicap rule, but it certainly
isn't used in builders' specs.


"Ghost" wrote in message
. ..
LOA (Length Over All) is a measurement from the tip of the bow, around the
edge of the deck - as in toerail - , to the edge of the stern). LOD (Length
Over Deck) is the straight line measurement you describe.

Therefore, two 30' yachts, one with a 12' beam and the other with a 10' beam
will have different LOD's!


"Simple Simon" wrote in message
...
No, LWL is a straight line measurement just like LOA.


"Wally" wrote in message
...
"Simple Simon" wrote in message

LWL is measured in a straight line from the water at the bow
to the water at the stern. LOA is measured from the stem fitting
(not the plow anchor, mind you) to the transom at its longest
point in a straight line.

Isn't the LWL measured from stem to stern along the path that the water
takes? Hence, for a given 'straight' LWL, a beamy boat would have a
slightly
longer LWL than a narrower boat. Of course, this would mean that an
estimate
based on a straight line measurement would be slightly short.


--
Wally
I demand rigidly-defined areas of uncertainty!
www.art-gallery.myby.co.uk