How does the ARC21 end up at 61.5 with 8'6" beam? Even if you give up the spi you are at 62.3....

2004 TABLE OF NORTH AMERICAN PORTSMOUTH NUMBERS
AND WIND DEPENDENT HANDICAPS
MULTIHULL CLASSES
June 2004

Changes are indicated in blue


MULTIHULL CLASSES USSA DPN WIND HC FOR BEAUFORT RANGE
*************************** CODE BN 0-1 BN 2-3 BN 4 BN 5-9
18m2 (Cat.1 Open) 18SM-1 63.9 68.4 65.2 63.7 58.0
18m2 (Cat.2 incl 11' Nacra 5.5 18SM-2 67.1 69.0 67.0 66.5 64.0
A Class Cat A-C 65.0 70.1 65.8 64.4 61.5
A Class Cat >200# all-up A-C2 70.1 72.9 71.1 69.0 66.3
Antrim 30+ Tri ATM30 64.5 (63.0)
ARC 17 w/spi ARC17 (70.0)
ARC 21 w/spi ODR ARC21 61.5 [65.3] 62.2 [61.1] [58.0]
ARC 22 ODR/SC22 spi ARC22 57.0 60.4 57.7 57.0 55.3
Catnip A-Class CN (74.1) [80.0] (74.9) [73.4] [69.0]
CFR20 Uni carbon w/spi CFR20 58.4 62.0 59.7 58.4 57.5
Dart 18 Sloop, 2-up D18 76.9 82.8 80.8 76.9 71.1
Dart 18 Uni (1-up) D18U 78.5 85.1 82.0 78.5 72.2
Dart 20 D20 72.4 76.0 75.0 72.9 66.2
Dingo DINGO 81.1 87.3 83.5 80.5 74.1
F-24 Tri Mk I All Sails F-24 76.0 79.9 77.2 75.6 74.3
F-24 Tri Mk II All Sails F-242 74.3 77.6 75.3 74.0 72.0
F-25C Tri Carbon All Sails F-25C 62.3 67.5 64.7 62.7 58.0
F-27 Formula All sails F-27F 68.5 71.9 69.0 66.7 65.1
F-27 Tri All Sails F-27 70.5 72.6 73.0 71.0 65.7
F-28 Tri Stock Main&Jib F-28 66.6 70.6 68.2 67.2 63.9
F-28R Tri All Sails F-28R 64.6 67.8 66.2 64.6 61.3
F-31 Tri Stock Main&Jib F-31 66.2 72.0 68.2 68.1 66.2
F-31R Tri All Sails F-31R 62.1 65.4 64.2 62.5 59.9
Formula 16 Sloop spi F16 66.9 70.3 68.4 65.4 63.1
Formula 16 Uni 1-up spi F16U 67.6 71.5 70.0 67.3 64.4
Formula 18 Sloop spi F18 62.5 66.4 64.1 61.8 59.3
Formula 18HT Uni 2up spi F18HTU 59.7 63.4 61.0 60.5 57.3
G-Cat 5.0 Turbo S.Hand, reacher G5.0-3 (72.2)
G-Cat 5.0m G5.0 76.0 82.4 78.4 76.0 69.9
G-Cat 5.7m G5.7 72.7 78.0 74.8 72.0 66.2
Hirondelle 24 HRD24 [95.1] [95.1]
Hobie 14 H14 86.5 95.1 90.2 85.6 81.3
Hobie 14 Turbo (1-up) H142 83.1 86.4 85.1 81.1 79.4
Hobie 16 H16 76.1 81.7 78.7 74.1 71.6
Hobie 16 Trapseat H16TS [78.0]
Hobie 17 (1-up) H17 74.1 78.5 76.3 73.7 69.5
Hobie 17 Sport Sloop, 2-up H17P 74.5 78.0 74.8 74.0 71.5
Hobie 18 & 18 Magnum TheMightyHobie18 71.4 76.9 73.5 69.6 66.8
Hobie 18 Formula H18F 71.6 78.5 73.2 71.0 66.2
Hobie 20 Miracle H20 64.9 69.4 66.4 64.2 61.3
Hobie 21 no spi H21 67.1 71.9 69.2 66.4 61.7
Hobie Dragoon 2-3crew no spi HDRG [83.0] [87.5] [84.7] [82.8] [81.5]
Hobie Fox w/spi HFOX 60.6 63.7 61.7 60.5 58.0
Hobie FX-One 1-up no spi HFX1U [71.2] [74.5] [73.0] [71.2] [69.1]
Hobie Getaway HGET 82.4 [87.5] 85.1 [81.1] [80.0]
Hobie SX-18 spi H18SX 70.7 75.6 73.1 70.1 65.3
Hobie Tiger F18 spi HF18 62.5 66.4 64.1 62.0 59.3
Hobie Tiger ODR spi HTIG 62.5 66.4 64.1 62.0 59.3
Hobie Wave HWAV 92.4 96.0 93.2 90.4 90.1
Isotope (Sloop, 1-up) ISTP 74.2 78.9 74.3 73.8 68.1
Isotope (Sloop, 2-up) ISTP-2 (77.1) [82.5] (78.4) [76.7] [70.8]
Javelin 18HT Uni 2-up spi JF18HTU 59.7 [63.4] 61.0 [60.5] [57.3]
Loka (A Class) LOKA 76.2 [80.3] (78.0) [75.5] [71.0]
Malibu Outrigger MAOT [79.0]
Marstrom M-20 carbon w/spi M20 56.5 60.1 58.2 56.5 53.6
Mystere 4.3 Sloop 1-2 Crew spi M4.3 S 78.4 83.8 81.9 77.9 75.7
Mystere 5.0 1-Trap M5.0 (76.1)
Mystere 5.0 XL, 2-up M5.0XL 75.5 [80.0] (77.4) [75.0] [69.0]
Mystere 5.5 8.5' Sloop M5.5 66.2 70.9 68.8 65.7 61.9
Mystere 6.0 M6.0 63.9 68.6 66.6 64.2 61.2
Mystere 6.0XL & 6.0XL w/wing M6.0XL 64.0 69.0 66.8 63.6 60.2
Mystere Twister F18 spi MF18 62.5 66.4 64.1 62.0 59.3
Nacra 4.5/450 Turbo 1-up N450T 76.9 80.4 79.6 77.0 74.4
Nacra 5.0 (2-up) N5.0 [76.4] [80.7] [79.0] [76.5] [73.0]
Nacra 5.2 (2-up) N5.2 72.1 78.1 74.8 71.4 66.4
Nacra 5.5 (11'Beam) See: 18SM-2
Nacra 5.5 8.5' Sloop N5.5 67.4 73.9 69.4 65.5 61.2
Nacra 5.5 8.5' Uni N5.5U 69.7 74.8 72.0 69.3 64.5
Nacra 5.7 (2-up) N5.7 72.3 75.5 74.9 72.2 68.6
Nacra 5.8 No.Amer. N5.8NA 66.2 70.7 68.3 65.6 61.3
Nacra 5.8 Orig.(2-up) N5.8 66.5 72.1 69.1 65.6 61.0
Nacra 500 (2-up) N500 76.0 80.3 78.6 76.2 72.6
Nacra 570 (2-up) N570 70.2 76.0 73.7 71.2 64.3
Nacra 6.0 New Eng. 350 spi N6.0NE (60.3) [63.4] [62.0] [60.1]
Nacra 6.0 No.Amer. N6.0NA 62.7 65.9 64.1 61.7 59.6
Nacra 6.0 Orig. N6.0 64.4 69.7 66.0 63.4 59.8
Nacra Inter 17 Uni 28' NI17U 73.2 75.7 75.0 73.2 71.0
Nacra Inter 17R Uni 30' spi NI17R 66.7 69.0 68.5 66.7 65.1
Nacra Inter 18 spi NI18 62.5 66.4 64.1 62.0 59.3
Nacra Inter 20 spi NI20 59.2 62.4 60.2 58.5 57.3
Nacra Inter F18 Sloop spi NF18 62.5 66.4 64.1 62.0 59.3
Pixel 23 Sloop Outrigger PIX23 [80.9]
Prindle 15 P15 76.4 81.7 78.4 75.8 72.1
Prindle 16 P16 77.5 84.2 80.6 76.3 71.3
Prindle 18 P18 74.9 81.3 77.4 74.6 69.0
Prindle 18-2 P182 68.9 72.4 71.7 68.5 64.8
Prindle 19 P19 66.4 71.7 68.8 64.5 61.3
Prindle 19MX P19MX 64.4 69.5 66.5 63.8 61.0
RC-27 spi 41.5' mast All Sails RC-27X 56.0 (60.7) (57.6) [55.8] (52.0)
RC-27 spi 44' mast All Sails RC-27 55.4
RC-30 spi 45' cbn All Sails RC-30 53.4 55.5 54.0 52.3 50.2
Sea Spray 15 (Sea Moth) SPY15 78.1 86.0 80.9 76.3 72.0
Shark SK 73.0 77.1 75.5 73.3 68.1
Sol Cat 15 SOL15 79.9 (81.1)
Stiletto 23 (3-Up) STL23 65.0 70.5 67.5 65.3 61.3
Stiletto 27 STL27 75.1 80.0 76.9 75.4 69.5
Stiletto 27 Race All Sails STL27R (64.7)
Stiletto 30 STL30 67.5 [72.9] 70.1 [69.3] [65.3]
SuperCat 15 SC15 78.4 84.0 79.7 78.0 71.2
SuperCat 17 SC17 73.3 79.6 76.6 71.9 67.0
SuperCat 19 SC19 69.0 74.1 72.2 68.1 62.6
SuperCat 19X & 19XL SC19X 66.5 72.1 68.6 66.5 61.2
SuperCat 20 SC20 65.0 70.5 67.4 65.2 59.8
SuperCat 20 (TR, Unmod) SC20H 64.4 67.1 65.3 63.6 58.8
Taipan 4.9 Sloop no spi T4.9 68.3 72.9 70.8 67.5 64.9
Taipan 4.9 Uni no spi T4.9U 69.9 73.8 71.7 69.9 66.6
Taipan 4.9/F16 Sloop spi TF16 66.9 70.3 68.4 65.4 63.1
Taipan 4.9/F16 Uni 1-up spi TF16U 67.6 71.5 70.0 67.3 64.4
Taipan 5.7 Sloop w/spi T5.7 60.7 66.0 63.0 61.2 58.0
Tornado 1-Trap no spi TORN2 63.8 67.0 65.6 63.1 60.6
Tornado (Int.) 2 Trap & spi TORN 59.0 62.7 60.5 58.1 55.5
Trac 14 TRC14 84.5 (90.5) 86.9
Trac 16 TRC16 76.3 82.1 80.8 76.0 69.9
Unicorn (A Class) UC-A 75.2 81.3 76.5 73.6 69.0
WindRider 16 Tri WR-16 [81.9]
WindRider 17 Tri WR-17 [80.0]
WindRider Rave Formula WRAVF [76.5]
WindRider Rave OD scrchr WRAV2 [76.5]
WindRider Rave OD Tri WRAV [77.0]