HPR CONCEPT Presented to the Yacht Racing Design & Technology Symposium December 13, 2011...

HPR CONCEPT

Presented to the Yacht Racing Design & Technology Symposium

December 13, 2011

PROPRIETARY & CONFINDENTIAL

HIGH PERFORMANCE RULE

organization

HPR Technical Committee:

Steve Benjamin Secretary

Sailmaker-North Sails USA 5x Admirals Cup Helmsman 1984 470 Olympic Medalist

William Tripp

Designer-Tripp Design

Bill Lee

Designer of the Santa Cruz 27, 33, 40, 50, 52, 70 and Merlin Member Transpac Tech Comm. Chair of original TP 52 Tech Comm.

Stan Honey

Rolex Yachtsman of the Year

Shaun Carkeek

Designer-Carkeek Partners Multiple World Champions-IMS,

TP 52, GP 42

Mark Mills

Designer-Mills Design


CONCEPT

• HPR is not intended to displace any other rating rule.

• The purpose of HPR is to get more owners and crews enjoying performance sailing.

• HPR is a performance oriented, type forming, continuum box rule. • HPR is international, permitting boats from many countries to race in high level

events.

• HPR is a fixed and published formula rule - designers can directly calculate unlimited HPR rating trials utilizing the HPR Excel spreadsheet.

• HPR will yield a rating in linear meters which is then converted to Time-on-Time (TOT) handicaps.

• HPR utilizes elements and concepts from several fixed formula rules.

• HPR will modernize with the times.


rules pyramid


purposes & goals

• To get more people sailing, more owners building new yachts, and more existing yachts racing.

• To create more excitement in the sport of sailboat racing.

• To create a rule of sufficient quality that the owners elevate it to high performance status for use worldwide.

• To encourage racing in good fast yachts that are fun to sail, safe, and competitive for many years, including new builds and existing yachts.

• To be as inclusive as possible of the existing fleet and yet encourage new builds.

• To create a forum where teams can compete at sailing as well as design and optimization. This requires a published and objective rule.

• To be fully compliant with the UMF (Universal Measurement Form).


universal measurement form

US Sailing, RORC, and ORC are jointly developing a “Universal Measurement Form” (UMF) which includes all measurements required by IRC, ORR, ORC and PHRF. Other rules are encouraged to participate.

The intent of the UMF is that once measured, a boat’s rating can be calculated under any participating rule. Eventually all UMF measured new boats may be supplied with the completed digital UMF.

While some have hoped for “One World, One Rule” the UMF is vastly more practical and will permit each rule to better serve its installed base. HPR’s philosophy is “The Right Rule for the Right Job.”

HPR is very supportive of the UMF effort. It will be a participant and will only use measurements that appear on the UMF.


TABLE OF RATING RULES

Summary of factors and key items in various rules - 1

Factors Universal CCA PHRF IOR IMS/ORC CHS/IRC IRM TP 52 ORR HPR

First Year 1920 1950s Late 40's 1970 1980 ? ? 2000 2001 2005 2012

Last Year 1937 1970 Continuing 1995 Continuing Continuing ? Continuing Continuing n/a

Length Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Beam ? Yes Yes Yes Yes Yes Yes Yes Yes Yes

Freeboard ? Yes No Yes Yes Yes Yes Yes Yes Yes

Draft Maximum Yes Yes Yes Yes Yes Yes Yes Yes Yes

Displacement Calculate Weigh Yes Calculate Calculate Weigh Weigh Weigh Weigh

Calculate Weigh

Sail Area Formula Formula Yes Formula Coefficient Formula Formula Formula Coefficient Formula

Vertical center of Gravity No Yes No Yes Yes No Yes Yes Yes Yes

Propeller No Yes Yes Yes Yes Yes Yes Yes Yes Yes

Age No No No Yes Yes Yes Yes Yes Yes Yes

Crew Weight No No No Yes Yes Yes Yes Yes Yes Yes

Const Matl and/or Cost Scantlings No No Yes Yes Yes Yes Yes Yes Yes

2nd Righting Moment factor No No No No No No Yes No No No

Movable Ballast No No Yes No Yes Yes No No Yes No

Mast Robust Factor Min wt. No No ? Yes Yes Yes Yes Yes Yes


TABLE OF RATING RULES

Summary of factors and key items in various rules - 2

Factors Universal CCA PHRF IOR IMS/ORC CHS/IRC IRM TP 52 ORR HPR

Measure LWL Yes Yes Owner Dec No Indirectly Yes Not sure No Indirectly No

Owner Declared Data No No Yes No Some Some No No Minimum No

Published Yes Yes Yes Yes Yes Confidential Yes Yes Confidential Yes

Arithmetic to combine factors Multiply Add / Mult Obser Perf Add / Mult VPP Confidential All multiply None VPP All Multiply

Output Linear Linear Sec/Mile Linear Sec/Mile TOT TOT Level Sec/Mile Linear

Single processing center req'd No No No Yes Yes No

Can designers calculate trials Yes Yes No Yes Yes No Yes Yes No Yes

specifications

Required

• ISO 12215 Compliant

• GL Plan Approval

• ORC Cat 1 & Cat 2 Compliant-As per event requirements

• RRS 51 Compliant, no moveable ballast

Under discussion

• Asymmetrical spinnakers with less than 75% mid girth.

• Cockpit volume requirements

• Forestay adjustable

• Mast jack adjustable


Development Rule

Development rules by their nature give a very slight but real edge to the latest design technology as an incentive for owners, designers, and builders to create faster and faster boats to the rule.

Development rules, while they have an objective to protect the bulk of the fleet they create, cannot on an ongoing basis, protect boats that are not up to speed.

HPR is NOT a general purpose rule. General purpose rules attempt to rate a wide range of boats, both existing and new, both racers and cruiser/racers, and with wide variation in type and age.


HPR Target TYPE form

The HPR type form is intended to include features from TP 52s, modern IRC racing boats, and the kind of well proportioned racing boat that a designer might design in the absence of rating rules.

HPR type form:

• Displacement only sufficient to provide righting moment

• Swept back spreader rigs

• Square top mainsails

• Split topmast runners

• Non-overlapping and fractional jibs

• Masthead asym spinnakers tacked to centerline sprits


Existing yachts

To do the best job for boats that have not been built as yet, the core of HPR is centered on the new boat target type form.

While HPR will provide for existing boats, it will not offer Cruiser/Racer credits, nor will it provide full rating credit for “go slow” factors.

Existing boat addendum:

• Chronological age allowance

• Relaxed type form requirements

• Alternative formulas


designer advisory forum

Interested designers, sailmakers, builders, and other industry professionals may participate.

Once the Technical Committee completes testing of the bases and correctors the forum will be invited to test the rule and comment.


OWNER advisory forum

An owners committee will be formed to help focus HPR on the kind of boats owners and crews want to race.

Of course everyone wants to sail in the kind of boat that will be fun to sail, and win.

Owners can be a big help on interiors, safety, and desirable vs. undesirable features.


rating formula

Final Rating Formula - Yields rating in metersR = L*AGE*BM*FR*DRA*VCG*CF*DE*RSA*RHF*RMAST*CCF*EP*AP

Final Output Description Format

1 L Length Linear number

2 AGE Age Allowance 1.000 +/-

3 BM Beam 1.000 +/-

4 FR Freeboard 1.000 +/-

5 DRA Draft 1.000 +/-

6 VCG Vertical Center of Gravity 1.000 +/-

7 CF Crew Factor 1.000 +/-

8 DE Displacement (empty) 1.000 +/-

9 RSA Rated Sail Area 1.000 +/-

10 RHF Rig Height Factor 1.000 +/-

11 RMAST Robust Mast 1.000 +/-

12 CCF Construction Cost 1.000 +/-

13 EP Engine-Propeller 1.000 +/-

14 AP Movable or Additional Appendages 1.000 +/-

Final Rating ® Linear number

Rating calculation• The starting point is to establish the rated length, L, which for new yachts is LOA

• For each factor, a base value is calculated from L

• The base values represent the target typeform in each size range

• As a factor strays further form the base, it is subject to increasing penalty or decreasing credit

• The difference between the actual value and the base value is determined and a corrector is calculated

• For a factor where its measured value is the same as its base value, its corrector is 1.000

• If the measured value indicates more boatspeed, the corrector will be greater than 1.000

• If the measured value indicates less boatspeed, the corrector will be less than 1.000

• A final linear rating is calculated by multiplying L times all of the correctors

• If all measured dimensions equal the corresponding base, the rating will = L

Bases – Version N1


typical corrector

Slopes will vary depending on factor


HPR Continuum

Phase II in process

Hpr rating spreadsheet


Supporting data

HPR BASES 32, 35, 40, 45, 52, 70ft


Sample of data analyzed

Ker 40 Trial

Soto 40 Trial Chutzpah

High NoonTripp 41

LOA 12.16 12.32 12.32 12.49

LWP 10.76 11.75 11.55 10.58

Beam 4.11 3.75 3.77 3.82

Beam Base 3.73 3.76 3.76 3.80

Disp 4830 4350 4944 5275

Disp Base 3276 3390 3390 3513

Draft 2.60 2.60 2.68 2.40

Draft Base 2.86 2.89 2.89 2.92

P 16.60 16.30 17.00 17.96

E 5.29 5.80 6.00 6.05

MHW 3.33 3.72 3.77 3.83

MTW 2.27 2.41 2.18 2.46

MUW 1.36 1.63 1.22 1.68

MSA 54.66 59.17 61.52 67.55

Arm 3.14 2.81 2.83 2.97

HSA 41.10 40.28 41.26 47.59

HSA % 0.43 0.41 0.40 0.41

USA 95.76 99.45 102.78 115.14

USA Base 95.74 98.20 98.20 100.85

SPA 170.00 177.83 163.98 180.01

IRC sugg 170.05 174.55 174.55 179.40

STL 6.75 6.43 6.68 6.99IRC STL *1.15 6.84 6.99 6.72 7.04

IRC unless noted


Mills 45

High performance rule

tripp design HPR45

High performance rule

Mcconaghy 38


Carkeek Design Partners HPR 40

HPR 40

SPIN AREA175.0 m²

CARKEEK DESIGN PARTNERS HPR 40

Hpr 40 generic hull form


Base HPR 40 – Base Design Comparison

11 11.2 11.4 11.6 11.8 12 12.2 12.4 12.6 12.8 13 13.2 13.4 13.645

55

65

75

85

95

105

115

FARR400

RC44

Farr 40

Soto 40

MC38

Ker 40

HPR40 GP42

Displacement / Length Ratio

GP42 HPR40 Ker 40 MC38 Soto 40 Farr 40 RC44 FARR400

LOA (m)

DL

R


Base HPR 40 – Base Design Comparison

11 11.2 11.4 11.6 11.8 12 12.2 12.4 12.6 12.8 13 13.2 13.4 13.630

35

40

45

50

55

60

FARR400

RC44

Farr 40

Soto 40

MC38

Ker 40

HPR40

GP42

Sail Area Upwind /Displacement Ratio


LOA (m)

SA

up

/Dis

p


Base HPR 40- Base Design Comparison

11 11.2 11.4 11.6 11.8 12 12.2 12.4 12.6 12.8 13 13.2 13.4 13.630

40

50

60

70

80

90

100

110

120

FARR 400

RC44

Farr 40

Soto 40

MC38

Ker 40

HPR40 GP42

Sail Area Downwind /Displacement Ratio


LOA (m)

SA

do

wn

/Dis

p

HPR INSIGNIA

HPR WEBSITE

HPR FUNDING

US Tax deductible contributions may be made to:

Sailing Yacht Research Foundation ATT: Jim Teeters

25 Lighthouse View DriveMiddletown, RI 02842

HPR CONCEPT Presented to the Yacht Racing Design & Technology Symposium December 13, 2011...

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Transcript of HPR CONCEPT Presented to the Yacht Racing Design & Technology Symposium December 13, 2011...