Certificate
Units: EnglishHINT: Any heading in blue typeface can be clicked on to see a full definition of the term. (help)
Certification #:
US42258
Issue Date:
04/05/2024
Build Date:
01/01/1981
Measure Date:
04/07/2012
Float Date:
04/07/2012
 
LOA:
16.624 ft
Beam Max:
4.402 ft
Rated Crew Wgt.:
712 lbs
Base Crew Wgt.:
1,095 lbs
Stab Index:
115.5 °
PIPA:
0.0092 ft²
Inventory Wgt:
110.0 lbs
Canting Angle:
0.0 °
List Angle:
0.0 °
Water Ballast:
0 lbs
Trim Water Ball:
0.000 ft³
Stored Power:
Class:
Alden 54 Ketch
Builder:
TSP
Rig Type:
Masthead Ketch
Prop Type:
3 Blade Feathering Exposed
Comment:
Keel Type:
Centerboard
Spinnaker:
Asymmetrical tacked centerline on bow, sprit or prod
Hull Const:
Cored
Mast Const:
Wood
Offset File:
US18863.OFF
Legacy V   USA60247
ORR Type:
Offshore
Measurement:
Full Measured
Valid Year:
2024
General Purpose Handicap(GPH):
632.4 SpM
ORA Logo
ORR Logo
2024 Offshore Racing Rule Certificate Data
Genoa/Jib
IG:
17.904 ft
J:
5.788 ft
SFJ:
0.152 ft
JLP:
7.809 ft
FSP:
0.110 ft
JLU:
17.066 ft
JH:
0.000 ft
JMGT:
0.976 ft
JMGU:
1.952 ft
JMGM:
3.904 ft
JMGL:
5.857 ft
JLE:
0.000 ft
Area Jib:
68.5 ft²
Fstay Adj:
Via Backstay
Inner Fst Adj:
Fixed
Whisker Pole:
Outrigger:
Large Roach Headsail
ILRH:
0.000 ft
JLRH:
0.000 ft
LRHLP:
0.000 ft
LRHLU:
0.000 ft
LRHHB:
0.000 ft
LRHTW:
0.000 ft
LRHUW:
0.000 ft
LRHMW:
0.000 ft
LRHQW:
0.000 ft
LRHSHW:
0.000 ft
LRHF:
0.000 ft
LRHLE:
0.000 ft
Area LRH:
0.0 ft²
Mainsail/Mast
GO:
0.366 ft
MW:
0.317 ft
P:
15.514 ft
E:
5.014 ft
HB:
0.101 ft
MGT:
0.640 ft
MGU:
1.189 ft
MGM:
2.347 ft
MGL:
3.597 ft
Area Main:
39.0 ft²
Main Wt:
26.2 lbs
MDT1:
0.158 ft
MDL1:
0.317 ft
MDT2:
0.158 ft
MDL2:
0.317 ft
TL:
0.000 ft
Mast Wt:
0.0 lbs
Mast CG:
0.000 ft
BAS:
1.750 ft
Measurement Trim
SFFP:
1.237 ft
SAFP:
16.036 ft
FFM:
1.439 ft
FAM:
1.094 ft
SG:
1.020
Disp Empty:
22,883 lbs
LCB:
8.694 ft
VCGD:
-0.044 ft
VCGM:
0.100 ft
Wetted Area:
51.8 ft²
Draft:
3.591 ft
ECE:
1.786 ft
LSM0:
12.891 ft
RMC:
443.6 ft·lbs
Sink/Float:
374.6 lb/in
MTCT:
218.34 ft·lbs/in
Mizzen
EB:
5.813 ft
PY:
10.436 ft
EY:
3.554 ft
HBY:
0.091 ft
MGTY:
0.488 ft
MGUY:
0.853 ft
MGMY:
1.676 ft
MGLY:
2.530 ft
Area Mizzen:
18.7 ft²
MDT1Y:
0.131 ft
MDL1Y:
0.204 ft
MDL2Y:
0.204 ft
MDT2Y:
0.131 ft
TLY:
0.000 ft
Owner(s):
Wiseman, Michael
Propeller
Prop Dia.:
0.457 ft
PBW:
0.180 ft
Twin Prop Inst:
Prop Install:
Exposed
ESL:
1.042 ft
EDL:
0.000 ft
PSA:
19.0 °
PSD:
0.037 ft
PHD:
0.088 ft
PHL:
0.171 ft
ST1:
0.024 ft
ST2:
0.137 ft
ST3:
0.165 ft
ST4:
0.073 ft
ST5:
0.213 ft
Sailing Trim
FF:
1.457 ft
FA:
1.056 ft
Disp Sailing:
24,088 lbs
LCB:
8.746 ft
VCGM:
0.137 ft
Wetted Area:
53.0 ft²
Draft:
1.834 ft
Rated Length:
13.225 ft
LSM1:
13.092 ft
LSM3:
13.232 ft
LSM4:
14.804 ft
RM2:
446.2 ft·lbs
RM20:
410.3 ft·lbs
RM40:
320.4 ft·lbs
RM60:
188.0 ft·lbs
RM90:
53.2 ft·lbs
LPS:
103.5 °
Spinnaker(s)
ISP:
17.904 ft
SPL:
5.941 ft
SL:
0.000 ft
SMW:
0.000 ft
SF:
0.000 ft
Area Symm:
0.0 ft²
 
TPS:
5.941 ft
ASLU:
17.830 ft
ASLE:
12.980 ft
AMG:
9.296 ft
ASF:
9.571 ft
Area Asym:
120.0 ft²
Mizzen Staysail
YSD:
9.296 ft
YSMG:
4.023 ft
YSF:
8.138 ft
Area Staysail:
37.6 ft²
Legacy V   USA60247
ORA Logo
ORR Logo
2024 Offshore Racing Rule Certificate Polars
Table of Boat Speed Polars (knots)* (at True Wind Angles)
True Wind Speed6 kts8 kts10 kts12 kts16 kts20 kts24 kts
Opt Beat Angle47.1°45.7°42.9°43.3°39.6°37.5°36.6°
Optimum Beat4.225.285.926.667.187.367.47
52°4.605.826.707.397.958.178.27
60°5.116.287.207.748.238.438.53
75°5.747.017.848.258.648.849.00
90°6.177.468.188.598.979.209.38
110°6.277.518.128.539.159.559.76
120°6.047.197.858.258.899.449.91
135°4.926.127.027.678.438.999.49
150°3.644.805.836.627.838.488.99
165°2.853.834.765.616.987.918.48
180°2.433.304.134.926.287.388.07
Optimum Run5.195.826.166.907.507.948.39
Opt Run Angle132.4°138.5°145.6°146.4°156.6°164.2°167.7°
* Speed through the water. Available as a Performance Package from the Offshore Racing Association with detailed polar charts and files to upload into popular tactical programs. Go to: https://offshoreracingrule.org/orr/polar-package"
Table of Time Allowances (sec/mile)*
True Wind Speed6 kts8 kts10 kts12 kts16 kts20 kts24 kts
Opt Beat Angle47.145.742.943.339.637.536.6
Beat VMG1,254.5975.7830.6742.3651.3616.3600.8
52°782.2618.1537.1487.3453.0440.9435.2
60°704.8573.0500.3465.1437.3427.0422.1
75°627.6513.2459.0436.3416.5407.0400.2
90°583.1482.5439.9419.1401.4391.3383.7
110°574.2479.1443.2422.2393.6376.9368.9
120°595.7500.5458.5436.1404.8381.3363.4
135°727.9588.3513.1469.2427.3400.6379.3
150°891.4714.9613.2542.1459.6424.4400.5
165°994.3797.3683.9604.6505.4455.0424.8
Run VMG1,029.3825.5708.0625.9523.2471.1439.3
Opt Run Angle132.4138.5145.6146.4156.6164.2167.7
* Sec/mile rating assume gybing downwind when target angles are deeper than best VMG angles.
Custom Ratings (TCF) ORA works with OA's to create custom ratings for your race course and wind conditions.
TOT (Spin)
Chicago Mac Upwind
Chicago Mac AP
Chicago Mac Offwind
Bayview Mac
California Offshore
Pacific Cup
Transpac (Approx.)
Puerto Vallarta
Cabo San Lucas
Acapulco WW/LW
Acapulco Random
Acapulco WW/LW5
Acapulco Stat Fit
San Francisco Bay
General Ratings (TCF)
TOT (Spin)
Ocean Non Spinnaker
Offshore Offwind
GPH Rating (SPM)
TOD (Spin)
GPH
Performance Metrics
SA/D Dnwind:
21.67
SA/D Average:
18.53
SA/D Upwind:
15.38
D/Length:
290.2
Ave Perf Screen:
6.4
Ratings by Wind Speed (TCF)
TOT (Spin)
LightMediumHeavy
Closed Course
WL 50/50
WL 60/40
Performance Curve Scoring (PCS) Ratings (SPM)
TOD (Spin)
6kt8kt10kt12kt16kt20kt24kt
Closed Course
WL 50/50
WL 60/40
Newport to Bermuda
Marion to Bermuda
Legacy V   USA60247
ORA Logo
ORR Logo
2024 Offshore Racing Rule Certificate Ratings
Legacy V   USA60247
ORA Logo
ORR Logo
2024 Offshore Racing Rule Certificate Line Drawing
: Search:
Label Definition Values
CERTIFICATION #text
ORR TYPEConfiguration describes the boats configuration in relationship to other prior certificates. It can be left blank if a boat has only one certificate. It has a maximum of 20 characters.text
SKU COPIED FROMtext
ISSUE DATEdate
MEASURE DATEdate
FLOAT DATEdate
BDYlength
EBlength
FFlength
GOlength
IGThe height of highest Genoa/Jib termination point above the sheer line.length
ILRHThe height of Large Roach Headsail termination point above the sheer line.length
ISPThe height of highest spinnaker termination point above the shear line.length
LOAThe overall length of the boat including the whole hull. Do not include spars or projections fixed to the hull such as chainplates, bowsprits, boomkins, pulpits, etc..length
SFFPlength
YSDlength
BEAM MAXThe maximum width (beam) of the boat measured at deck level at the widest point between the port and starboard sides.length
SA/D DNWINDA sailboat metric for express a Power to Drag ratio. Downwind SA/D = Downwind Sail Area/(displacement)^.667number
FAlength
JThe distance between the front of the mast and the headstay termination on the deck at the sheer line.length
JLRHThe distance between the front of the mast and the Large Roach Headsail tack point at the sheer line.length
MEASUREMENTConfiguration describes the boats configuration in relationship to other prior certificates. It can be left blank if a boat has only one certificate. It has a maximum of 20 characters.text
MWlength
PYThe distance between colored bands on the mizzen mast, or the maximum luff length of the Mizzen.length
SAFPlength
SPLThe length of the spinnaker pole (or whisker pole), when it is attached on the mast, and set in a horizontal position fore and aft, measured from the forward face of the mast to the forward most point of the pole and fittings.length
YSMGlength
SFJlength
SA/D AVERAGEnumber
BASYlength
CREWThe aggregate weight of the crew in lightweight clothing used in the calculations of ratings.weight
DISP SAILINGThe calculated displacement of the boat in sailing configuration, including equipment and crew.weight
EYThe distance between colored bands on the boom, or the maximum foot length of the Mizzen.length
FFMlength
JLPThe shortest distance from the clew of the Jib to the luff.length
LRHLPThe shortest distance from the clew of the Large Roach Headsail to the luff.length
PThe distance between colored bands on the mast, or the maximum luff length of the Mainsail.length
RIG TYPEThe type (style) of rig the boat uses.text
SLThe longest length of a Symmetric Spinnaker luff and leech measured along the edges of the sail from head to foot.length
SA/D UPWINDnumber
VALID YEARtext
YSFlength
RIG TYPEThe type (style) of rig the boat uses.text
BASE CREW WGT.The caluclated weight of the crew in used in the calculations of ratings. It is calculated with a formula with inputs of Length, Displacement, Stability and Beam.weight
EThe distance between the colored bands on the boom, or the maximum foot length of the Mainsail.length
FAMlength
FSPlength
HBYThe width of the Mizzen headboard.length
LCBlength
LRHLUThe length of the luff shall normally be the distance between the lowest part of the sail of the luff at the tack and the highest point of the sail on the luff at the head.length
SMWThe Symmetrical Spinnaker measurement between the midpoints of the luff and leech.length
STAB INDEXdegree
AREA STAYSAILarea
D/LENGTHBoat Metric for comparing designs and Speed. DLR = Displacement/(LWL)^3text
HBThe width of the Mainsail Headboard.length
JLUThe length of the luff shall normally be the distance between the lowest part of the sail of the luff at the tack and the highest point of the sail on the luff at the head.length
LRHHBThe width of the Large Roach Headsail head or headboard.length
MGTYThe shortest distance from the seven-eighths-leech point of the Mizzen to the luff.length
SFThe Symmetrical Spinnaker distance between the tack and clew, measured by the shortest path.length
SGThe specific gravity of the water shall be measured at this time and recorded as SG. The water shall be sampled from a level 0.3m (one foot) below the surface.number
VCGMlength
ABS PLAN
DISP EMPTYThe dry weight of the boat with all loose equipment removed. This is undoubtedly the most frequent question by owners since in almost all cased the "Measured Displacement" used for ORR-Ez ratings is greater than the "Brochure Displacement" used for publications and posted on Sailboatdata.com ORR-Ez uses the median of the boats that have been measured for ORR,ORC,IRC, Americap, IMSweight
ECElength
INVENTORY WGTweight
JHThe width of the Jib head or headboard.length
LRHTWThe shortest distance from the seven-eighths-leech point of the Large Roach Headsail to the luff.length
MGTThe shortest distance from the seven-eighths-leech point of the Mainsail to the luff.length
MGUYThe shortest distance from the three-quarter-leech point of the Mizzen to the luff.length
AREA SYMMarea
WETTED AREAarea
TPSThe tack point of an asymmetric spinnaker (mounted on the centerline of the boat, to the deck or to a sprit) measured from the front of the mast to the tack point of the sail, perpendicular to the water.length
ASLUThe Asymmetrical spinnaker luff length.length
AVE PERF SCREENAverage perf screen is a metric that is used by some OA's for establishing fleet splits that are based on the 'Sportiness' of a boat. Mathematically it is Average Sail Area Displacement Ratio / Displacement Length Ratio * 100 to make it readable.number
CANTING ANGLEdegree
DRAFTThe maximun depth of the boat (keel) below the waterline.length
JMGTThe shortest distance from the seven-eighths-leech point of the Jib to the luff.length
LCBlength
LRHUWThe shortest distance from the three-quarter-leech point of the Large Roach Headsail to the luff.length
MGMYThe shortest distance from the half-leech point of the Mizzen to the luff.length
MGUThe shortest distance from the three-quarter-leech point of the Mainsail to the luff. length
VCGDlength
ASLEThe Asymmetrical Spinnaker leech length.length
JMGUThe shortest distance from the three-quarter-leech point of the Jib to the luff.length
LIST ANGLEdegree
LRHMWThe shortest distance from the half-leech point of the Large Roach Headsail to the luff.length
MGLYThe shortest distance from the quarter-leech point of the Mizzen to the luff.length
MGMThe shortest distance from the half-leech point of the Mainsail to the luff.length
PROP TYPEThe type (style) of propeller the boat uses; or to indicate the use of an Outboard motor.text
RATED LENGTHThe Rated Length of a boat is the effective sailing length used to predict boat speeds and ratings. This is calculated in the sailing conditions which includes crew, gear and sails. It includes the effects of bow and stern overhangs.length
VCGMlength
AMGThe measurement between the midpoints of the Asymmetrical Spinnaker luff and leech.length
JMGMThe shortest distance from the half-leech point of the Jib to the luff.length
LRHQWThe shortest distance from the quarter-leech point of the Large Roach Headsail to the luff.length
LSM1length
MGLThe shortest distance from the quarter-leech point of the Mainsail to the luff.length
PROP INSTALLThe type (style) and placement of mounting for the propeller.● Exposed,
● In Aperture,
● Strut Drive,
● Other,
● Exposed Other,
● Exposed Twin,
● Housed Shaft,
● Pre 1987,
● Old Strut,
● Exp No Strut,
● No Prop,
AREA MIZZENThe total area (square feet/meters) of the Mizzen.area
WATER BALLASTweight
WETTED AREAarea
COMMENTtext
ASFThe Asymmetrical Spinnaker foot length.length
DRAFTThe maximun depth of the boat (keel) below the waterline.length
JMGLThe shortest distance from the quarter-leech point of the Jib to the luff.length
LRHSHWThe measurement between the midpoints of the Large Roach Headsail luff and leech.length
LSM3length
MDT1Ylength
AREA MAINThe total area (square feet/meters) of the largest Mainsail.area
TRIM WATER BALLvolume
JLElength
LRHFThe length of the foot of the Large Roach Headsail.length
LSM0length
LSM4length
MDL1Ylength
MAIN WTweight
STORED POWER
AREA ASYMThis is the rated Sail area after any rule based limitations.area
LRHLEThe length of the leech of the Large Roach Headsail.length
MDT1length
RM2force
RMCforce
KEEL TYPE
SPINNAKERThe type of spinnaker(s) this boat flies. Include all types.● None,
● Asymmetrical tacked centerline on bow, sprit or prod,
● Asymmetrical only flown with spinnaker pole,
● Symmetrical flown with spinnaker pole,
● Both Symmetrical & Asymmetrical flown with spin pole,
BOW SHEER Xnumber
LARGE ROACH HEADSAILAnswer Yes if you carry a headsail with a midgirth-to-foot measurement ratio of greater than 50% but less than 75%.text
MDL1length
MDL2Ylength
MDT2Ylength
RM20force
SINK/FLOATweightpersinkage
AREA JIBarea
AREA LRHThe total area (square feet/meters) of the largest Large Roach Headsail.area
FSTAY ADJ
MDT2length
MTCTmomentpertrim
RM40force
TLYlength
HULL CONSTtext
INNER FST ADJ
MDL2length
RM60force
MAST CONSTtext
WHISKER POLE
OFFSET FILEtext
OUTRIGGER
RM90force
TLlength
LPSdegree
MAST WTMWTweight
MAST CGMCGlength
BASlength
BDlength
Rating Types
Rating TypeDefinition
Closed Course
WL 50/50
WL 60/40
Marion to Bermuda
Newport to Bermuda
GPHGeneral Purpose Handicap
Ocean Non Spinnaker
Offshore Offwind
Wind Types
Wind TypeDefinition
6kt
8kt
10kt
12kt
16kt
20kt
24kt
Light
Medium
Heavy
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