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Dimensions of Catalina 27 sail drive

Updated 10/25/2012

Selected Measurements for Catalina 27 sail drive

BOAT
I
J
P
E
ISP
JSP
PY
EY
Disp
LWL
DRAFT
Catalina 27 sail drive 34.5 11.3 28.7 10.5 0 0 0 0 0 21.75 4

Links to our Multi Vendor Used Sail Directory for Catalina 27 sail drive

Other Data Base Entries for catalina 27*

Click on boat nane to use
BOAT   I J P E ISP SPL PY PELWLDRAFTDISP
CATALINA 27   34.5 11.3 28.7 10.5 21.754 6850
Catalina 27 34.5 11.3 28.7 10.5 34.5 11.3
Catalina 27 Ib 34.5 11.3 28.7 10.5 21.754
Catalina 27 Ob 34.5 11.3 28.7 10.5 21.7546850
Catalina 27 Sail Drive 34.5 11.3 28.7 10.5 21.754
CATALINA 27 SD 34.5 11.25 28.7 10.5 21.753.4 7300
Catalina 27 SD 34.5 11.3 28.7 10.5 34.5 11.3
Catalina 27 Sd Ib 34.5 11.3 28.7 10.5 21.753
Catalina 27 Sd Ob 34.5 11.3 28.7 10.5 21.7537300
CATALINA 27 SD TM 36 12.2 29.7 9.7 21.753 7300
Catalina 27 Sd Tm 36 12.2 29.7 9.7 21.7537300
CATALINA 27 TM 36 12.2 29.7 9.7 21.754 6850
Catalina 27 Tm 36 12.2 29.7 9.7 21.7546850
Catalina 27 TM 36 12.2 29.7 9.7 36 12.2
Catalina 27 Tm Ib 36 12.2 29.7 9.7 21.754
Catalina 27 Tm Ib No Bs 36 11.3 29.7 9.7 21.754
Catalina 27 Tm Ob 36 12.2 29.7 9.7 21.7546850
Catalina 27 Tm Ob No Bs 36 11.3 29.7 9.7 21.7546850
Catalina 27 Tm Sd Ib 36 12.2 29.7 9.7 21.753
Catalina 27 Tm Wk Ib 36 12.2 29.7 9.7 21.753.57300
Catalina 27 WK 34.5 11.3 28.7 10.5 34.5 11.3
Catalina 27 Wk Ib 34.5 11.3 28.7 10.5 21.753.426750
CATALINA 270 33.33 9.25 28.17 11.5 235 6240
Catalina 270 33.58 9.25 28.42 11.5 23.7556200
Catalina 270 33.6 9.3 28.4 11.5 33.6 9.3
CATALINA 270 SD 33.33 9.25 28.17 11.5 233.5 6460
Catalina 270 Wk 33.58 9.25 28.42 11.5 23.753.56200
Catalina 270 WK 33.6 9.3 28.4 11.5 33.6 9.3
Click Here for other boat types or to check dimensions from other data bases. We now offer three data bases.

Sail Area Calculations

BOAT
I
J
P
E
ISP
JSP
PY
EY
Disp
LWL
DRAFT
Catalina 27 sail drive 34.5 11.3 28.7 10.5 34.5 11.3 0 0 0 21.75 4

sailboat rig dimensions The following formulas are approximate
Sail areas depend on lots of factors, leach hollow, foot round, luff hollow etc. Also, remember that jib sail area in general is based on the forestay length, I. But all things considered, these numbers are close but should not be considered exact. They are rules of thumb, not measurements of a this specific boat.

Mainsail

Mainsail = (P x E) / 2 = 151 sq ft
Racing Mainsail (add 10%) = 166 sq ft

Genoa

155% Genoa = (( J x I ) / 2) x 1.65 = 322 sq ft
135% Genoa = (( J x I ) / 2) x 1.44 = 281 sq ft

Jib

  _______
LP of full fore triangle = ( I x J ) / √  I2 + J2 = 10.7
Jib size to fill fore triangle = 95%
100% Jib = ( I x J ) / 2 = 195 sq ft

A more accurate LP calculator is HERE

Spinnaker

Spinnaker Area = Max Luff x Max Girth x ( 70-85%) = 491 to 596 sq ft
"Square" Spinnaker Area = Max Luff x Max Girth) = 702 sq ft
AC Area = 585 sq ft
Maximum Luff (.95 * sqrt (JSP^2 + ISP^2) = 34.49 feet
Maximum Girth = 1.8 * JSP = 20.34 feet
Ref

DEFINITIONS

"P" is the luff length of the mainsail, measured along the aft face of the mast from the top of the boom to the highest point that the mainsail can be hoisted or black band.

"E" is the foot length of the mainsail, measured along the boom from the aft face of the mast to the outermost point on the boom to which the main can be pulled or to the black band.

"I" is measured along the front of mast from the genoa halyard to the main deck. The main deck is where the deck would be if there were no deckhouse.

"J" is the base of the foretriangle measured along the deck from the headstay pin to the front of the mast.

"JSP" is the length of the spinnaker pole or the distance from the forward end of the bowsprit (fully extended) to the front face of the mast.

"ISP" is measured from the highest spinnaker halyard to the deck.

"PY" and "EY" are, respectively the luff length and foot length of the mizzen of a yawl or ketch measured in the same way as for the mainsail.

"IY" is the measurement from the staysail halyard to the deck.

"JY" is the measurement from the staysail stay to the front face of the mast.

"LP" is the shortest distance between the clew and the luff of the genoa.

Data*

This data is supplied as a reference and all boat dimensions should be verified before using it in any critical application.
The information in these data bases is a starting point. There are errors as you can see as the different data bases do not always agree. In addition, some boats have been modified from stock and will not match the data in these databases. None of this data has been checked by L-36.com so please always check your boat before relying on this data.
Data is from a variety of sources.
db = SBD is used under the Creative Commons License sailboatdata.com (sailboatdata.com) / CC BY 3.0
db = PHRF is the PHRF Critical Dimensions database
db = WEB is the commonly available data found on many web sites
db = BIG is a combination of all of the above.

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