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Dimensions of Helms-dolphin 24

Updated 10/25/2012

Selected Measurements for Helms-dolphin 24

BOAT
I
J
P
E
ISP
JSP
PY
EY
Disp
LWL
DRAFT
Helms-dolphin 24 30.5 10.5 25.5 9 0 0 0 0 4200 20.83 4

Links to our Multi Vendor Used Sail Directory for Helms-dolphin 24

Other Data Base Entries for helms*

Click on boat nane to use
BOAT   I J P E ISP SPL PY PELWLDRAFTDISP
CARRERA HELMSMAN   37.07 13.65 42.65 15.42 30.186.23 8848
DOLPHIN 25 (HELMS)   30.5 10.5 25.5 9 21.6753950
Helms 24   30.5 10.5 25.5 9 20.8344200
HELMS 24 30.5 10.5 25.5 9 20.834.174200
HELMS 24 30.7 10.5 25.5 9
HELMS 24 DOLPHIN 30.5 10.5 25.5 9
Helms 24 Ib 30.5 10.5 25.5 9 20.834
Helms 24 Ib Sd 30.5 10.5 25.5 9 20.83
Helms 24 Sd 30.5 10.5 25.5 9 20.834200
HELMS 24 SD 30.5 10.5 25.5 9 20.8334200
HELMS 25 30 10 25 10
Helms 25 30 10 25 10 21.51.73950
HELMS 25 30 10 25 10 21.543950
HELMS 25 30 10 25 10 30 10
HELMS 27 35 11.25 30 10 21.584.36200
HELMS 27 35 11.3 30 10
Helms 27 35 11.3 30 10 21.584.36200
HELMS 27 35 11.3 30 10 35 11.3
Helms 27 Sdr 35 11.3 30 10 21.584.3
HELMS 30 40 12.8 35 10
Helms 30 40 12.8 35 10 23.424.58400
HELMS 30 40 12.8 35 10 40 12.8
HELMS 30 40 12.85 35 10 23.424.59600
HELMS 32 40 13 35 11 25.54.83 9500
HELMS DOLPHIN 24 30.5 10.5 25.5 9 30.5 10.5
HELMS DOLPHIN 24 SD 30.5 10.5 25.5 9 30.5 10.5
Helms-dolphin 24 30.5 10.5 25.5 9 20.8344200
HELMSMAN 26 1/4 TON 33.1 10 30.84 8.2 20.674.76 4960
HELMSMAN 31 39.53 11.98 34.45 9.02 225.74 7385
HELMSMAN 35 41.3 11.3 45.6 13.1 27.236.4 9920
HELMSMAN 35 43.6 13.6 39.7 9.8 43.6 13.6
HELMSMAN 35 FR 41.3 11.3 45.6 13.1
Helmsman 35 Fr 41.3 11.3 45.6 13.1 27.75612000
HELMSMAN 35 FR 41.3 11.3 45.6 13.1 41.3 11.3
HELMSMAN 47 49.49 15.75 58.73 19.03 417.55 24912
HELMSMAN 47 49.5 15.8 58.7 19 49.5 15.8
HELMSMAN 47 SD 49.5 15.8 58.7 19 49.5 15.8
Helmsman 47 Wk 48.83 15.42 55.83 19.08 38.58623000
HELMSMAN 47 WK 49.5 15.8 58.7 19 49.5 15.8
LADY HELMSMAN   36.25 11.65 41.67 12.47 31.15.74 10361
SENIORITA HELMSMAN   30.05 10.17 34.78 10.17 24.444.92 6261
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
Helms-dolphin 24 30.5 10.5 25.5 9 30.5 10.5 0 0 4200 20.83 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 = 115 sq ft
Racing Mainsail (add 10%) = 127 sq ft

Genoa

155% Genoa = (( J x I ) / 2) x 1.65 = 264 sq ft
135% Genoa = (( J x I ) / 2) x 1.44 = 231 sq ft

Jib

  _______
LP of full fore triangle = ( I x J ) / √  I2 + J2 = 9.9
Jib size to fill fore triangle = 94%
100% Jib = ( I x J ) / 2 = 160 sq ft

A more accurate LP calculator is HERE

Spinnaker

Spinnaker Area = Max Luff x Max Girth x ( 70-85%) = 405 to 492 sq ft
"Square" Spinnaker Area = Max Luff x Max Girth) = 579 sq ft
AC Area = 483 sq ft
Maximum Luff (.95 * sqrt (JSP^2 + ISP^2) = 30.64 feet
Maximum Girth = 1.8 * JSP = 18.9 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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