RE: catalina27-talk: Hull Speed

[Phil Agur]

Title: Message

Traditional hull speed assumes your vessel is a traditional heavy plank construction and derives your displacement from there. That’s why a formula like hull speed, which we all know is greatly impacted by displacement (as loaded weight) doesn’t appear to care about your loading at all.   If you read Dave Gerr’s The Nature of Boats (that’s Naval Architect Dave Gerr) carefully you can assemble the full formula (I call it advanced, but it really just replaces the traditional assumptions with data) from 3 chapters on boat speed.   It is still limited to displacement hulls or should I say hulls operating in the displacement mode. I’ve planned a C22 and it was clear hull speed didn’t apply for a few minutes.   The nice thing is the real world and the real formula correlates much better than the real world viewed with traditional wisdom. The traditional for C22 5.89 knots but as you know that’s not a real number, especially for race ready early old style C22.      Phil Agur                    s/v Wing Tip Commodore,             Call Sign WCW3485 IC27/270A                   MMSI 366901790 www.catalina27.org      Vessel Doc# 1039809 -----Original Message----- From: catalina27-talk@memberclicks.com [mailto:catalina27-talk@memberclicks.com] On Behalf Of Jones, Lance B Sent: Monday, October 02, 2006 10:49 AM To: catalina27-talk@memberclicks.com Subject: RE: catalina27-talk: Hull Speed   Hummm, what's the difference?     Lance B. Jones _/) Internet Account Representative YELLOWPAGES.COM from BellSouth BellSouth Advertising and Publishing Corporation 2247 Northlake Parkway-8th Floor Tucker, Georgia 30084-4005 Phone: (678) 406-2531 Toll Free: (866) 213-2617 Fax: (770) 908-6213 Email: [EMAIL PROTECTED] Visit our website @ www.yellowpages.com -----Original Message----- From: catalina27-talk@memberclicks.com [mailto:[EMAIL PROTECTED] On Behalf Of Phil Agur Sent: Monday, October 02, 2006 1:47 PM To: catalina27-talk@memberclicks.com Subject: RE: catalina27-talk: Hull Speed Lance,   Are you looking for traditional or advanced hull speed?   Phil Agur                    s/v Wing Tip Commodore,             Call Sign WCW3485 IC27/270A                   MMSI 366901790 www.catalina27.org      Vessel Doc# 1039809 -----Original Message----- From: catalina27-talk@memberclicks.com [mailto:[EMAIL PROTECTED] On Behalf Of Jones, Lance B Sent: Monday, October 02, 2006 7:54 AM To: catalina27-talk@memberclicks.com Subject: RE: catalina27-talk: Hull Speed     Does anyone know what the hull speed of the 27 is?   Lance B. Jones _/) Internet Account Representative YELLOWPAGES.COM from BellSouth BellSouth Advertising and Publishing Corporation 2247 Northlake Parkway-8th Floor Tucker, Georgia 30084-4005 Phone: (678) 406-2531 Toll Free: (866) 213-2617 Fax: (770) 908-6213 Email: [EMAIL PROTECTED] Visit our website @ www.yellowpages.com ***** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential, proprietary, and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from all computers. GA622