Designs

Focused on performance cruisers in the range of seventy to ninety feet (21..26 meters), ranging from seven to eighteen tons displacement. The interiors differ in scale between 70 and 90 feet (a mere ten feet in half the boat...); a little more roomy but not enough to offer significantly different floor plans. Proas this size are suprisingly small when it comes to accommodation; it's actually very difficult to squeeze a Venezia 42 into a 70' proa!

Design features in common: structural core, hulls, crossbeams, bridge deck, steering and rig. They differ in arrangements of the cockpit and pilot house with consequent effects on interior layout options: full salon pilot house, walk-around pilot house, bridge house racer and day charter versions have been identified.

Click for rotating view! (253K)

Click for rotating view! (253K)

See: Design Considerations

At 35 degrees roll, the pod carries 4,400 lbs. displacement, 7+ feet to leeward.

At 45 degrees roll, the pod suddenly carries more than 50% of total displacement, 7+ feet to leeward.

45 degrees roll with 4 degrees pitch.

30 degrees roll with 15 degrees pitch.

Ama flys at 3+ degrees roll.



Spring, 2018
- interactive Sketchfab 3D viewer


Spring Equinox, March, 2016


Grasshopper Salon/Coach, July, 2015


Rhino CAD, August, 2014



Rhino CAD, April, 2014

Click for rotating view! (253K)

April, 2008 - Twenty years ago(!) this summer, the idea took hold of owning a full time live aboard 70' Pacific proa. But it was always clear to me that the cost would be at least as much as having a custom 43' catamaran professionally built (~US$300K). And of the few who can afford that, very few of them want to gamble that small fortune on something as novel as a large cruising proa. So my thinking now is that 90' proas (and up) might have a better chance, as crewed commercial charter boats or private yachts, where money is less of an issue; equivalent to a 49 passenger, 55' catamaran.


Click for rotating view! (253K) Full Salon Pilot House
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Click for rotating view! (253K) Click for rotating view! (253K)

Click for rotating view! (253K) Walk-around Pilot House
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Click for rotating view! (253K) Click for rotating view! (253K)

Click image for larger view Bridge House Racer
Extensive engineering analysis of stability, drag, weight and load capacity, rig, rudders and steering, etc. (1996)
Click image for larger view of sketch

Versions of this design:
All 3D models created by Joseph Oster using MultiSurf by AeroHydro or Rhino/Grasshopper





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Related pages:


Web site by wingo.com
Contact:
Oregon

Links to other Proa Web Sites