Club Certificate2026
SEALOVEUSA 61926
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Rated boat velocities in knots
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles49.8°47.5°45.7°44.5°43.8°43.9°44.3°44.3°45.4°
Beat VMG1.872.793.483.994.354.604.744.844.74
52°3.044.455.436.126.647.007.207.347.29
60°3.394.815.786.476.987.307.507.677.67
75°3.635.066.026.757.267.587.798.048.13
90°3.585.126.257.087.577.837.978.238.48
110°3.735.376.557.387.858.178.438.829.08
120°3.625.226.417.287.818.168.469.059.47
135°3.154.645.866.837.507.948.278.929.56
150°2.623.925.036.016.807.387.788.348.90
Run VMG2.273.394.355.205.896.406.817.477.98
Gybe Angles140.6°143.9°146.8°147.1°148.7°151.4°155.6°162.4°177.0°
APH ToD:596.1CDL: 8.920APH ToT: 1.0066CertNo:US61926
BOAT
ClassIsland Packet 420DesignerRobert JohnsonBuilderIsland PacketAge date01/2004Series date01/1999Offset fileislandpacket420.offData fileUS61926
HULL
Length Overall13.829 mMaximum Beam4.340 mDraft1.549 mDisplacement13,608 kgDLR9.3781IMS DivisionCruiser/RacerDynamic Allowance0.710%Age Allowance0.650%RS Assessment-0.152%
PROPELLER
InstallationIn ApertureTypeFeathering 4 bladesDiameter0.355m
CREW
Maximum weight333 kg(declared)Minimum weight203 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail35.9535.74Headsail Luffed58.9058.90Headsail FlyingSymmetricAsymmetric144.18144.18 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail13.13Storm Jib14.15Heavy Weather Jib38.19
SAIL LIMITS
Headsails5
✱ One set on the forestay
Spinnakers4
STABILITY
Righting Moment 298.3 kg·m Stability Index 107.6
The owner and any other person in charge is responsible that boat is complying with her certificate in accordance with RRS 78.1 and ORC Rule 304.
ORC Ref  04560004V1S Issued on 09/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SEALOVEUSA 61926
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1922.01290.91034.4903.4826.9782.5760.2743.9759.9
52°1183.2809.3662.8587.8542.0514.5499.9490.6494.0
60°1063.3748.1623.2556.6516.0493.1479.7469.7469.2
75°990.9711.5597.7533.5496.2475.2462.3447.6443.1
90°1004.9702.5575.7508.2475.3459.9451.5437.2424.3
110°965.1670.9549.9488.1458.3440.7426.9408.4396.4
120°995.6689.5561.3494.6461.2441.3425.3397.7380.2
135°1141.5776.5613.9526.9479.9453.6435.3403.4376.6
150°1373.7919.0716.2599.1529.6488.1462.9431.5404.6
Run VMG1586.21061.2826.9691.8611.5562.9528.7481.9451.3
Selected Courses
Windward / Leeward1754.11176.0930.7797.6719.2672.7644.4612.9605.6
All purpose1308.3891.3716.3622.6569.3538.6519.7497.8489.7
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward756.80.7928
All purpose596.11.0066
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6622
Downwind "popa"0.8815
70% up, 30% down "Ilhabela"0.7156
30% up, 70% down "Ilhabela-inverso"0.8018
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Predominantly Upwind660.70.9082
Predominantly Downwind594.91.0086
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP622.50.9639 Predom. Rc High466.91.2851 5B SF Bay L/M848.10.7075 TriNum AP Low803.80.7465 Predom. Dn Low962.10.6237 5B SF Bay Med708.90.8464 TriNum AP Med591.71.0140 Predom. Dn L/M683.40.8780 5B SF Bay M/H630.60.9514 TriNum AP High516.21.1623 Predom. Dn Med568.61.0552 5B SF Bay High601.40.9976 TriNum W/L Low1110.10.5405 Predom. Dn M/H503.91.1907 5B AP Low893.70.6714 TriNum W/L Med751.30.7986 Predom. Dn High472.31.2703 5B AP L/M687.30.8729 TriNum W/L Hig639.70.9380 ChiMac Up Low884.10.6786 5B AP Med581.21.0324 Predom. Upwind696.10.8620 ChiMac Up Med779.00.7702 5B AP M/H523.41.1464 Predom. Reaching589.61.0177 ChiMac Up High657.70.9123 5B AP High500.21.1996 Predom. Downwind626.80.9572 ChiMac Off Low812.20.7388 5B W/L Low1259.20.4765 Predom. Up Low1031.20.5819 ChiMac Off Med706.60.8491 5B W/L L/M888.70.6752 Predom. Up L/M746.70.8035 ChiMac Off High583.91.0275 5B W/L Med735.80.8154 Predom. Up Med634.50.9457 ChiMac AP Low843.50.7114 5B W/L M/H650.20.9229 Predom. Up M/H575.41.0427 ChiMac AP Med739.40.8115 5B W/L High617.10.9723 Predom. Up High556.31.0786 ChiMac AP High618.50.9701 W/L 60-40 Low1284.30.4672 Predom. Rc Low872.60.6876 BayMac Cove Island986.30.6083 W/L 60-40 L/M910.00.6593 Predom. Rc L/M633.10.9478 BayMac Shore979.40.6126 W/L 60-40 Med757.50.7921 Predom. Rc Med538.61.1141 Harvest Moon506.11.1856 W/L 60-40 M/H673.50.8909 Predom. Rc M/H489.01.2269 5B SF Bay Low1053.10.5698 W/L 60-40 High643.60.9323      SA/DSPL Up16.50SA/DSPL Dn31.33
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance654.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating654.50.9167
FinRating, kevyt tuuli1236.70.8086
FinRating, kova tuuli502.80.9945
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9167
Triple Number Coastal/Long Distance Low0.7465
Triple Number Coastal/Long Distance Medium1.0141
Triple Number Coastal/Long Distance High1.1623
Triple Number Windward/Leeward Low0.5696
Triple Number Windward/Leeward Medium0.7986
Triple Number Windward/Leeward High0.9380
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
For information
General Purpose Handicap (GPH)676.7
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Saronikos S All Purpose714.10.8402
Saronikos S Upwind827.70.7249
Saronikos S Downwind566.51.0591
Saronikos N All Purpose740.50.8103
Saronikos N Upwind866.30.6926
Saronikos N Downwind613.40.9781
Saronikos SW All Purpose720.70.8325
Saronikos SW Upwind857.70.6995
Saronikos SW Downwind570.21.0523
Saronikos NE All Purpose765.60.7837
Saronikos NE Upwind802.50.7477
Saronikos NE Downwind697.50.8603
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose622.50.9639
5-Band All Purpose Low991.60.6051
5-Band All Purpose L/M712.10.8425
5-Band All Purpose Med599.71.0005
5-Band All Purpose M/H538.81.1136
5-Band All Purpose High513.71.1679
Single Number Predominant Upwind660.20.9089
Single Number Predominant Reaching560.61.0703
Single Number Predominant Downwind594.81.0088
5-Band 50-50 Windward/Leeward Low1259.20.4765
5-Band 50-50 Windward/Leeward L/M888.70.6752
5-Band 50-50 Windward/Leeward Med735.80.8154
5-Band 50-50 Windward/Leeward M/H650.20.9229
5-Band 50-50 Windward/Leeward High617.10.9723
5-Band 60-40 Windward/Leeward Low1284.30.4672
5-Band 60-40 Windward/Leeward L/M910.00.6593
5-Band 60-40 Windward/Leeward Med757.50.7921
5-Band 60-40 Windward/Leeward M/H673.50.8909
5-Band 60-40 Windward/Leeward High643.60.9323
Triple Number 50-50 Windward/Leeward Low1110.10.5405
Triple Number 50-50 Windward/Leeward Med751.40.7985
Triple Number 50-50 Windward/Leeward High639.70.9380
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward778.70.7705
Triple Number 60-40 Windward/Leeward Low1133.20.5295
Triple Number 60-40 Windward/Leeward Med772.90.7763
Triple Number 60-40 Windward/Leeward High663.70.9041
Triple Number All-Purpose Low878.70.6828
Triple Number All-Purpose Med610.90.9822
Triple Number All-Purpose High531.11.1297
Triple Number Predominant Upwind Low921.90.6508
Triple Number Predominant Upwind Med649.40.9239
Triple Number Predominant Upwind High574.91.0436
Triple Number Predominant Reaching Low782.30.7669
Triple Number Predominant Reaching Med560.01.0714
Triple Number Predominant Reaching High471.41.2728
Triple Number Predominant Downwind Low850.90.7051
Triple Number Predominant Downwind Med578.81.0366
Triple Number Predominant Downwind High483.61.2408
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low803.8
Triple Number Coastal/Long Distance Medium591.7
Triple Number Coastal/Long Distance High516.2
Triple Number Windward/Leeward Low1053.4
Triple Number Windward/Leeward Medium751.3
Triple Number Windward/Leeward High639.7
Predominantly Upwind660.7
Predominantly Downwind594.9
Predominantly Reaching568.7
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7465
Triple Number Coastal/Long Distance Medium1.0141
Triple Number Coastal/Long Distance High1.1623
Triple Number Windward/Leeward Low0.5696
Triple Number Windward/Leeward Medium0.7986
Triple Number Windward/Leeward High0.9380
Coastal/Long Distance0.9167
Predominantly Upwind0.9082
Predominantly Downwind1.0086
For information
General Purpose Handicap (GPH)676.7
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.0066
Distanseseilas Trippeltall svak vind0.7465
Distanseseilas Trippeltall mellomvind1.0141
Distanseseilas Trippeltall sterk vind1.1623
Pølsebane Trippeltall svak vind0.5696
Pølsebane Trippeltall mellomvind0.7986
Pølsebane Trippeltall sterk vind0.9380
Motvind Singeltall0.9082
Medvind Singeltall1.0086
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Coastal/Long Distance654.50.9167
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind660.70.9082
Predominantly Downwind594.91.0086
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore607.80.9872
Cape Doctor Coastal492.11.2193
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7465
Triple Number Coastal/Long Distance Medium1.0141
Triple Number Coastal/Long Distance High1.1623
Triple Number Windward/Leeward Low0.5696
Triple Number Windward/Leeward Medium0.7986
Triple Number Windward/Leeward High0.9380
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7465
Triple Number Coastal/Long Distance Medium1.0141
Triple Number Coastal/Long Distance High1.1623
Triple Number Windward/Leeward Low0.5696
Triple Number Windward/Leeward Medium0.7986
Triple Number Windward/Leeward High0.9380
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Predominantly Upwind660.70.9082
Predominantly Downwind594.91.0086
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low803.80.7465
Triple Number Coastal/Long Distance Medium591.71.0141
Triple Number Coastal/Long Distance High516.21.1623
Triple Number Windward/Leeward Low1053.40.5696
Triple Number Windward/Leeward Medium751.30.7986
Triple Number Windward/Leeward High639.70.9380
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1737.31164.5868.4709.6613.3560.2523.1470.0458.8
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP622.50.9639 Predom. Dn High472.31.2703 5B AP M/H523.41.1464 TriNum AP Low803.80.7465 Predom. Rc Low872.60.6876 5B AP High500.21.1996 TriNum AP Med591.71.0140 Predom. Rc L/M633.10.9478 5B SF Bay Low1053.10.5698 TriNum AP High516.21.1623 Predom. Rc Med538.61.1141 5B SF Bay L/M848.10.7075 TriNum W/L Low1110.10.5405 Predom. Rc M/H489.01.2269 5B SF Bay Med708.90.8464 TriNum W/L Med751.30.7986 Predom. Rc High466.91.2851 5B SF Bay M/H630.60.9514 TriNum W/L Hig639.70.9380 5B W/L Low1259.20.4765 5B SF Bay High601.40.9976 Predom. Upwind696.10.8620 5B W/L L/M888.70.6752 ChiMac Up Low884.10.6786 Predom. Reaching589.61.0177 5B W/L Med735.80.8154 ChiMac Up Med779.00.7702 Predom. Downwind626.80.9572 5B W/L M/H650.20.9229 ChiMac Up High657.70.9123 Predom. Up Low1031.20.5819 5B W/L High617.10.9723 ChiMac Off Low812.20.7388 Predom. Up L/M746.70.8035 W/L 60-40 Low1284.30.4672 ChiMac Off Med706.60.8491 Predom. Up Med634.50.9457 W/L 60-40 L/M910.00.6593 ChiMac Off High583.91.0275 Predom. Up M/H575.41.0427 W/L 60-40 Med757.50.7921 ChiMac AP Low843.50.7114 Predom. Up High556.31.0786 W/L 60-40 M/H673.50.8909 ChiMac AP Med739.40.8115 Predom. Dn Low962.10.6237 W/L 60-40 High643.60.9323 ChiMac AP High618.50.9701 Predom. Dn L/M683.40.8780 5B AP Low893.70.6714 BayMac Cove Island986.30.6083 Predom. Dn Med568.61.0552 5B AP L/M687.30.8729 BayMac Shore979.40.6126 Predom. Dn M/H503.91.1907 5B AP Med581.21.0324 Harvest Moon506.11.1856      SA/DSPL Up16.50SA/DSPL Dn31.33
ORC Ref  04560004V1S Issued on 09/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SEALOVEUSA 61926
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassIsland Packet 420MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall13.829Maximum beam4.340Draft1.549Displacement13,608Wetted area47.92IMS L11.317LSM011.320Accomod. length13.829Sink (kg/mm) 30.15
VCGD0.240VCGM0.234 RM Rated (kg·m) 298.3Limit of positive stability(°) 100.1 Stability Index 107.6 BLR index 0.0000Default crew weight822 Declared crew weight 333
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFeathering 4 blades
InstallationIn ApertureTwin screwNoHydro generatorNo
PRD0.355PBW0.101PIPA0.0088
APH0.450APT0.250APB0.270
RIG
BackstayAdjustableForestayFixedInner forestayFixedMast materialAluminumSingle headsail furlerYesMainsail furlerIn mastArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P14.480IG16.760ISP16.780MDT10.140MDL10.260MDT2MDL2TLNo TaperMW0.260GO0.280
E5.180J5.770BAS2.100FSD0.032SFJ0.000SPLWPLTPS6.070BD0.200MWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date01/01/2013
SFFP0.867FFMFF1.415LCFcl7.868SG
SAFP13.182FAMFA0.988LCFsh8.165HBI1.126
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04560004V1S Issued on 09/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
SEALOVEUSA 61926
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMn0.050.601.172.423.7335.9509/12/2025EVO-251055
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentGen0.030.861.733.595.567.5116.05NoNo 58.9023/10/2025EVO-251057SS0.050.300.561.171.882.6210.94NoInner 13.6022/10/2025EVO-251056
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA217.8315.9516.8910.2010.4298%144.1830/12/2025EVO-251107
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length13.8 mTable area0.66 m²Headroom1.88 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity234 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity126 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04560004V1S Issued on 09/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org