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Dimensions of Gulfstar 60 ketch

Updated 10/25/2012

Selected Measurements for Gulfstar 60 ketch

BOAT
I
J
P
E
ISP
JSP
PY
EY
Disp
LWL
DRAFT
Gulfstar 60 ketch 74 23 65.8 17.5 74 23 40 11.3 0 0 0

Links to our Multi Vendor Used Sail Directory for Gulfstar 60 ketch

Other Data Base Entries for gulfstar 60*

Click on boat nane to use
BOAT   I J P E ISP SPL PY PELWLDRAFTDISP
Gulfstar 60   74 23 65.8 22 48.33955400
GULFSTAR 60 74 23 65.8 22 48.339 60020
GULFSTAR 60 74 23 65.8 22 74 23
GULFSTAR 60 CB 74 23 65.8 22 48.3312.5 55400
Gulfstar 60 Cb 74 23 65.8 22 48.33655400
GULFSTAR 60 CB 74 23 65.8 22 74 23
Gulfstar 60 Cb Tm 80 23 70 21.5 48.33655400
GULFSTAR 60 KETCH 74 23 65.8 17.5 40 11.3
GULFSTAR 60 KETCH 74 23 65.8 17.5 74 23 40 11.3
Gulfstar 60 Sd 74 23 65.8 22 48.3355400
GULFSTAR 60 SD 74 23 65.8 22 48.336.18 55400
GULFSTAR 60 SD 74 23 67 22 74 23
GULFSTAR 60 Std rig 74 23 65.8 22
GULFSTAR 60 Tall rig 80 22.8 70 21.5
GULFSTAR 60 TM 80 22.8 70 21.5 48.339 55400
Gulfstar 60 Tm 80 22.8 70 21.5 48.33955400
GULFSTAR 60 TM 80 22.8 70 21.5 80 22.8
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
Gulfstar 60 ketch 74 23 65.8 17.5 74 23 40 11.3 0 0 0

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 = 576 sq ft
Racing Mainsail (add 10%) = 634 sq ft

Mizzen = (PY x EY) / 2 = 226 sq ft.

Genoa

155% Genoa = (( J x I ) / 2) x 1.65 = 1404 sq ft
135% Genoa = (( J x I ) / 2) x 1.44 = 1225 sq ft

Jib

  _______
LP of full fore triangle = ( I x J ) / √  I2 + J2 = 22
Jib size to fill fore triangle = 96%
100% Jib = ( I x J ) / 2 = 851 sq ft

A more accurate LP calculator is HERE

Spinnaker

Spinnaker Area = Max Luff x Max Girth x ( 70-85%) = 2134 to 2591 sq ft
"Square" Spinnaker Area = Max Luff x Max Girth) = 3048 sq ft
AC Area = 2540 sq ft
Maximum Luff (.95 * sqrt (JSP^2 + ISP^2) = 73.62 feet
Maximum Girth = 1.8 * JSP = 41.4 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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