DOLPHIN 25 (HELMS)

Sailboat Specifications

both US imperial metric

Hull Type:

Keel/Cbrd.

Rigging Type:

Masthead Sloop

LOA:

24.85 ft / 7.57 m

LWL:

21.67 ft / 6.61 m

Beam:

7.95 ft / 2.42 m

S.A. (reported):

260.00 ft² / 24.15 m²

Draft (max):

5.00 ft / 1.52 m

Draft (min):

1.67 ft / 0.51 m

Displacement:

3,950 lb / 1,792 kg

Ballast:

300 lb / 136 kg

S.A./Disp.:

16.69

Bal./Disp.:

7.59

Disp./Len.:

173.29

Construction:

FG

First Built:

1968

Builder:

Jack A. Helms Co. (USA)

Designer:

Jack A. Helms

Sailboat Calculations

Definitions

S.A./Disp.:

16.69

Bal./Disp.:

7.59

Disp./Len.:

173.29

Comfort Ratio:

17.05

Capsize Screening Formula:

2.01

S#:

3.13

Rig and Sail Particulars

help

I:

30.50 ft / 9.30 m

J:

10.50 ft / 3.20 m

P:

25.50 ft / 7.77 m

E:

9.00 ft / 2.74 m

S.A. Fore:

160.13 ft² / 14.88 m²

S.A. Main:

114.75 ft² / 10.66 m²

S.A. Total (100% Fore + Main Triangles)

274.88 ft² / 25.54 m²

S.A./Disp. (calc.):

17.65

Est. Forestay Len.:

32.26 ft / 9.83 m

Sailboat Links

Builders:

Helms - Jack A. Helms Co.

Advance Sailboat Corp. (USA)

Download Boat Record:

PDF

Notes

Said to have been first built by Advance Sailboat Corp.?
Very similar to what later became the HELMS 25.

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