Mark Smaalders Yacht Designs

Designs for seaworthy, affordable cruising boats, sail and power
Specializing in wood and wood/epoxy construction

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Kahuna Nui
Kahuna Nui is intended for extended offshore sailing with a larger crew than Kahuna can accommodate. Two possible arrangement plans are shown below, as is the pilot house version.


Pilothouse version of Kahuna Nui, now under construction in Montana

Kahuna Particulars

LOA (on deck)                    

 37'

Long. Center of Buoyancy

17.8’ aft of Sta 0

 

LWL

33’

Prismatic Coeff.

.555

 

Beam

12’

Pounds/inch i mm.

1257

 

Draft (keel version)

Dellenbaugh Angle

11.3

Displacement


20,800 (keel)

Wind pressure coeff.

1.5


 

Sail Area (working)


850 ft²

Moment to trim 1”

2048 ft-lb

 

Sail Area/ Disp. (gaff rig, working sail)

17.98

Wetted surface

372 ft²

 

 Disp. / Length

 258 (keel)

Maximum righting moment

 55,000 ft-lbs at 70 degrees

 



Limit of positive stability (hull only)

 125 degrees