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ORC International Certificate |
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ORC International certificate comes in two A4 pages. The
First page contains all the rating
details used mainly by the race committee to score races
as well as by sailors while racing. Besides the boat's
data with general specifications, there is rating
information provided for the simple scoring options and
time allowances for Performance Curve Scoring with four
types of pre-selected courses. The most important
section for sailors is the Velocity prediction in knots
for true wind speed given in the table for 6, 8, 10, 12,
14, 16 and 20 knots of true wind speed and wind angles
of optimum beat, 52, 60, 75, 90, 105, 120, 135, 150 and
optimum downwind angles. Additionally, there is
infomation about declared and default crew weight
including double-handed scoring coefficients, number of
sails allowed aboard while racing and limitation for the
storm sail's area.
Second page is the IMS Measurement
certificate that includes all the measurements as
recorded by the measurer including complete sails
inventory and measurement inventory recorded on the
inclining test. Some measurement data such as mizzen,
centerboard, canting keel and water ballast are shown
only when they are relevant.
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Click on any
part of certificate for description |
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Boat |
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Boat's name and sail number
GPH: General Purpose Handicap is an average
representation of all time allowances used for simple
comparisons between boats and possible class divisions. It
is calculated as an average of the time allowances of 8 and
12 knots true wind speed for the Circular Random
pre-selected course.
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General |
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Class, Designer and
Builder:
Series: Month and Year of launching of the first boat
of series
Age: Month and Year of launching the boat
Age Allowance: credit for age of 0.065% of ratings
increase for each year from Age or Series Date to the
current rule year up to maximum of 20 years (1.3%).
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Hull |
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Length Overall:
length overall a boat including the whole hull, excluding
any spar, between the stem and aftermost point of the hull
Maximum Beam: maximum hull width
Displacement: displacement in measurement trim
Draft: draft in measurement trim
IMS Reg. Division: Racing or Cruiser/Racer
Accommodation length: simplified representation of
the size of the yacht used in Accommodation Regulations
Dynamic Allowance: credit representing dynamic
behavior of a boat taking into account performance in
unsteady states
Fwd Accomodation: when the bow forward of the mast is
fully fitted out as a separate sleeping or living space
Hull Construction: Solid, Cored, Carbon, Light/Other
Carbon Rudder: when rudder and/or rudder post contain
carbon fiber in any amount
Trim Tab: presence of trim tab
IMS L: effective sailing length which
takes into account the hull shape along its length and
especially at the ends of the yacht, both above and below
the plane of flotation in sailing trim
VCGD: vertical centre of gravity from the datum line
in the hull offset file
VCGM: vertical centre of gravity from the measurement
water line
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Simple Scoring Options |
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Simple scoing options Time
On Distance
Time On Time
Performance Line
Triple Number as described
here.
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Performance Curve Scoring |
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Time Allowances for different wind speed
and angles used for the Performance Curve Scoring as
desribed here.
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Polar Diagram |
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Theoretical boat speed in knots for
different wind speeds and directions.
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Certificate |
Crew Weight |
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Number: certificate number issued by
the rating authority
ORC Ref: ORC refference number
Issued On: Date of certificate issuing
VPP Ver: VPP version
Valid until: Date of expiry |
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Total crew weight aboard shall be less then
Declared: as declared by the owner
Default: if not declared
Double Handed ToD: Time on Distance coefficient for
double handed races
Double Handed ToT: Time on Time coefficient for double
handed races
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Sail Limitations |
Storm Sail Areas |
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Number of sails allowed aboard while
racing:
Spinnaker sonfiguration: Symmetric only, Asymmetric
on CL (no pole allowed), Assymmetric on pole (including
symmetric) or None- |
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Minimum sail areas for the storm sails as
defined by the Offshore Special Regulations.
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Rig |
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Forestay Tesnion: Aft, Forward, Aft & Forward or
Fixed
Inner Forestay: Fixed, Adjsutable or None
Carbon mast: Presence of carbon mast
Taper Hollows: If mast taper has hollows
Jumpers: Presence of jumpers
Spreaders: Number of spreaders
Runners: Number of runners |
P Mainsail hoist
IG Height of genoa hoist
ISP Heighot of spinnaker hoist
SPS Height of spinnaker pole stop
MW Mast width
GO Forestay Outrigger
BAS Heigh of boom above sheerline
FSP Forestay perpendicular
MDT1 Max. mast transverse section
MDL1 Max. mast fore and aft section
MDT2 Min. mast transverse section
MDL2 Min. mast for and aft section
TL Taper Length
J Foretriangle base
SPL Spinnaker pole length
TPS Tacking point of spinnaker
E Mainsail foot
BAL Boom after sheeting limit
BD Boom diameter
BWT Boom weight
SFJ Stem to forard end of J
CPW Chainplate width
MWT Mast weight
MCG Mast centre of gravity
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Inclining Test & Freeboards |
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SG Specific gravity
FFM Freeboard forward measured
FAM Freeboard aft measured
FF Freeboard forward adjusted to default SG
FA Freeboard aft adjusted to default SG
SFFP Stem to forward freeboard station
SAFP Stem to aft freeboard station
W1 - W4 Inclining test weights
PD1 - PD4 Pendulum deflections
WD Weight distance
GSA Gauge Surface Area of inclining manometer
RSA Reservoir Surface Area of inclining manometer
PLM Lenght of inclining manometer
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Propeller |
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PRD Propeller diameter
PBW Propeller blade width
PIPA Propeller instalation projected area
PSA Propeller shaft angle
PSD Propeller shaft diamater
PHD Propeller hub diameter
PHL Propeller hub length
ST1 - ST5 Strut dimensions
ESL Exposed shaft length
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Heavy items (displayed only when exist) |
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List of items eligibile for Cruiser/Racer
credit due to pitch gyradius as recorded outside of the
central zone of 35% to 60% LOA from stem
Anchor Weight Weight of anchor with associated chain
Anchor LCG Position of anchor from stem
C/R Adjustment Credit for heavy items
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Sails
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Where
there is no sails inventory (boats measured before 2007)
sails measurements are displayed in the box above Sail Rated
Areas. Sails inventory include sail measurements and some
additional information as measurer, measurement date, sail
material and comments. |
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Sail rated areas are those used by VPP in
rating calculations. Rated areas may differ from the actual
measurement areas as displayed in the sails inventory. |
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Mainsail |
Jib/Genoa |
Symmetric spinnaker |
Asymmetric spinnaker |
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HB Mainsail top width
MGT Mainsail 7/8 width
MGU Mainsail 3/4 width
MGM Mainsail 1/2 width
MGL Mainsail 1/4 width
MSW Mainsail weight |
JH Jib top width
JGT Jib 7/8 width
JGU Jib 3/4 width
JGM Jib 1/2 width
JGL Jib 1/4 width
LPG Jib perpendicular
JL Jib luff |
SL Spinnaker luff/leech
SMW Spinnaker maximum width
SF Spinnaker foot |
SLU Asymmetric spinnaker luff
SLE Asymmetric spinnaker leech
AMG Asymmetric spinnaker mid girth
ASF Asymmetric spinnaker foot
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Measurement inventory |
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List of
items recorded with weight and dsitance from stem on the
inclining test.
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