AUTORUN STATUS   text 
BDY   length 
CERTIFICATE #   text 
EB   length 
HB  The width of the Mainsail Headboard.  length 
HBY  The width of the Mizzen headboard.  length 
IG  The height of highest Genoa/Jib termination point above the sheer line.  length 
LOA  The 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 
LP  The shortest distance from the clew of the Jib to the luff.  length 
HB  The width of the Large Roach Headsail head or headboard.  length 
SL  The longest length of a Symmetric Spinnaker luff and leech measured along the edges of the sail from head to foot.  length 
LWL  The length of the hull at the waterline.  length 
RATED LENGTH  The 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 
ANCHOR DIST   length 
BEAM MAX  The maximum width (beam) of the boat measured at deck level at the widest point between the port and starboard sides.  length 
CONFIGURATION  Configuration 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 
SA/D DNWIND  A sailboat metric for express a Power to Drag ratio. Downwind SA/D = Downwind Sail Area/(displacement)^.667  number 
ISP  The height of highest spinnaker termination point above the shear line.  length 
LPG %  The width (LP) of the headsail expressed as a percentage of the J measurement.  percentage 
TW  The shortest distance from the seveneighthsleech point of the Large Roach Headsail to the luff.  length 
MGT  The shortest distance from the seveneighthsleech point of the Mainsail to the luff.  length 
MGTY  The shortest distance from the seveneighthsleech point of the Mizzen to the luff.  length 
MW   length 
SMW  The Symmetrical Spinnaker measurement between the midpoints of the luff and leech.  length 
ILRH  The height of Large Roach Headsail termination point above the sheer line.  length 
SA/D AVERAGE   number 
BASY   length 
DRAFT  The maximun depth of the boat (keel) below the waterline.  length 
J  The distance between the front of the mast and the headstay termination on the deck at the sheer line.  length 
JLRH  The distance between the front of the mast and the Large Roach Headsail tack point at the sheer line.  length 
J LUFF  The 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 
UW  The shortest distance from the threequarterleech point of the Large Roach Headsail to the luff.  length 
MGU  The shortest distance from the threequarterleech point of the Mainsail to the luff.
 length 
MGUY  The shortest distance from the threequarterleech point of the Mizzen to the luff.  length 
SF  The Symmetrical Spinnaker distance between the tack and clew, measured by the shortest path.  length 
SA/D UPWIND   number 
SA/D   number 
VALID YEAR   text 
J LEECH   length 
ISSUE DATE   text 
EXP.DATE   text 
AREA  The total area (square feet/meters) of the largest Symmetrical Spinnaker.  area 
BAS  Boom Above Sheer  length 
DRAFT SHOAL  The shallowest Draft possible during sailing.  length 
JH   length 
MW  The shortest distance from the halfleech point of the Large Roach Headsail to the luff.  length 
MGM  The shortest distance from the halfleech point of the Mainsail to the luff.  length 
MGMY  The shortest distance from the halfleech point of the Mizzen to the luff.  length 
P  The distance between colored bands on the mast, or the maximum luff length of the Mainsail.  length 
RIG TYPE  The type (style) of rig the boat uses.  ● Sloop, ● Ketch, ● Yawl, ● Gaff, ● Cat, ● Cat Ketch, ● Cutter, ● Schooner, ● Other,

D/LENGTH  Boat Metric for comparing designs and Speed. DLR = Displacement/(LWL)^3  text 
D/LENGTH  Boat Metric for comparing designs and Speed. DLR = Displacement/(LWL)^3  text 
DISP EMPTY  The 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 ORREz ratings is greater than the "Brochure Displacement" used for publications and posted on Sailboatdata.com ORREz uses the median of the boats that have been measured for ORR,ORC,IRC, Americap, IMS  weight 
E  The distance between the colored bands on the boom, or the maximum foot length of the Mainsail.  length 
JMGT   length 
LW  The shortest distance from the quarterleech point of the Large Roach Headsail to the luff.  length 
FORESTAY  Choose Masthead if the headstay terminates at the top of the mast. Choose Fractional if the headstay terminates anywhere below the top of the mast.  ● Masthead, ● Fractional,

MGL  The shortest distance from the quarterleech point of the Mainsail to the luff.  length 
MGLY  The shortest distance from the quarterleech point of the Mizzen to the luff.  length 
OFFSETS_FILE   text 
DISP SAILING  The calculated displacement of the boat in sailing configuration, including equipment and crew.  weight 
CREW  The aggregate weight of the crew in lightweight clothing used in the calculations of ratings. This is the Maximum Crew Weight and any excess shall automatically suspend the validity of the Certificate.  weight 
WATER BALLAST   weight 
AREA  The total area (square feet/meters) of the largest Mainsail.  area 
AREA  The total area (square feet/meters) of the Mizzen.  area 
ASLU  The Asymmetrical spinnaker luff length.  length 
EY  The distance between colored bands on the boom, or the maximum foot length of the Mizzen.  length 
JMGU   length 
FOOT  The length of the foot of the Large Roach Headsail.  length 
MG  The measurement between the midpoints of the Large Roach Headsail luff and leech.  length 
ASLE  The Asymmetrical Spinnaker leech length.  length 
AVE PERF SCREEN  Average 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 
PERF SCREEN  Average 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 
COMMENT   text 
JMGM   length 
KEEL TYPE  The type (style) of keel on the boat.  ● Fixed, ● Fixed w/ Winglets, ● Canting, ● Fin, ● Centerboard, ● Keel Centerboard, ● Fin with Bulb, ● Wing, ● Other,

LP  The shortest distance from the clew of the Large Roach Headsail to the luff.  length 
PY  The distance between colored bands on the mizzen mast, or the maximum luff length of the Mizzen.  length 
AMG  The measurement between the midpoints of the Asymmetrical Spinnaker luff and leech.  length 
DNWIND PERF SCREEN  DownWind 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 
JMGL   length 
LUFF  The 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 
PROP TYPE  The type (style) of propeller the boat uses; or to indicate the use of an Outboard motor.  ● Fixed, ● Folding, ● Feathering, ● Outboard, ● None,

SPL  The 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 
WETTED AREA   area 
ASF  The Asymmetrical Spinnaker foot length.  length 
LPS   degree 
LEECH  The length of the leech of the Large Roach Headsail.  length 
PROP INSTALL  The type (style) and placement of mounting for the propeller. Note that Strut Drive is the proper choice for Sail Drives.  ● Exposed, ● In Aperture, ● Strut Drive, ● Other, ● Exposed Other, ● Exposed Twin, ● Housed Shaft, ● Pre 1987, ● Old Strut, ● Exp No Strut, ● No Prop,

TPS  The 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 
AREA  The total area (square feet/meters) of the largest Asymmetrical Spinnaker.  area 
PROP BLADES  The number of blades the propeller uses.  ● 2, ● 3, ● 4,

RM20   force 
MDL1Y   length 
STAB INDEX   degree 
AREA  The total area (square feet/meters) of the largest Headsail (Jib or Genoa).  area 
AREA  The total area (square feet/meters) of the largest Large Roach Headsail.  area 
SPINNAKER  The 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 X   number 
CODE ZERO  Answer Yes if you carry a spinnaker with a midgirthtofoot measurement ratio of less than 85% but not less than 75%.  ● No, ● Yes,

GENOA/JIB LEECH  No Roach: No width measurements (LP only);
Has Roach: Has width measurements (roach may be convex or concave).  ● No Roach  Leech is straight, ● Has Roach or Hollow,

LARGE ROACH HEADSAIL  Answer Yes if you carry a headsail with a midgirthtofoot measurement ratio of greater than 50% but less than 75%.  ● No, ● Yes,

MDL1   length 
MDL2Y   length 
JIB FURLER  Does the genoa/jib (headsail) use a roller furling device?  ● No, ● Yes, ● Yes Above Deck, ● Yes Below Deck,

TLY   length 
MAIN ROLLER FURLING  Does the Main use a roller furling device?  ● No, ● Yes In Mast, ● Yes In Boom,

MDL2   length 
TL   length 
BD   length 