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Dimensions of Beneteau 28

Updated 10/25/2012

Selected Measurements for Beneteau 28

BOAT
I
J
P
E
ISP
JSP
PY
EY
Disp
LWL
DRAFT
Beneteau 28 34.7 11.6 29.9 9.3 0 0 0 0 5934 24.28 5.5

Links to our Multi Vendor Used Sail Directory for Beneteau 28

Other Data Base Entries for beneteau 28*

Click on boat nane to use
BOAT   I J P E ISP SPL PY PELWLDRAFTDISP
BENETEAU 28   34.6 11.6 29.9 9.5 34.6 11.6
Beneteau 28 34.7 11.6 29.9 9.3 24.285.55934
Beneteau 28 Fr 34.7 11.6 36.7 10.5 24.285.55954
BENETEAU 28 FR 34.7 11.6 36.7 10.5 34.7 11.6
BENETEAU 28 FST 34.7 11.6 29.9 9.3
BENETEAU 28 FST Frac rig 34.7 11.6 36.7 10.5
BENETEAU 281 OCEANIS 33.3 10.8 29.2 11.3
BENETEAU 285 32.5 10.3 31.2 11.1 32.5 10.3
Beneteau 285 32.5 10.3 31.3 11.1 24.255.256160
Beneteau 285 Sd 32.5 10.3 31.3 11.1 24.253.756160
BENETEAU 285 Std rig 28.6 7.9 26.6 10.3
BENETEAU 285 Tall rig 32.5 10.3 31.2 11.1
BENETEAU 285 WK 32.5 10.3 31.2 11.1 32.5 10.3
Beneteau 285 Wk 32.5 10.3 31.3 11.1 24.253.86160
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
Beneteau 28 34.7 11.6 29.9 9.3 34.7 11.6 0 0 5934 24.28 5.5

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 = 139 sq ft
Racing Mainsail (add 10%) = 153 sq ft

Genoa

155% Genoa = (( J x I ) / 2) x 1.65 = 332 sq ft
135% Genoa = (( J x I ) / 2) x 1.44 = 290 sq ft

Jib

  _______
LP of full fore triangle = ( I x J ) / √  I2 + J2 = 11
Jib size to fill fore triangle = 95%
100% Jib = ( I x J ) / 2 = 201 sq ft

A more accurate LP calculator is HERE

Spinnaker

Spinnaker Area = Max Luff x Max Girth x ( 70-85%) = 508 to 617 sq ft
"Square" Spinnaker Area = Max Luff x Max Girth) = 726 sq ft
AC Area = 605 sq ft
Maximum Luff (.95 * sqrt (JSP^2 + ISP^2) = 34.76 feet
Maximum Girth = 1.8 * JSP = 20.88 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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