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James Wharram Designs

Unique self-build sailing catamarans, inspired by the double canoes of the Polynesians

Find the right boat for you

Wharram Study Plans are intended to help you decide if a particular boat design is for you. They provide more detail than is available in the Design Book. The most important part of the Study Plan is the Materials List, which will list the major boat building materials requirements so you can cost your project in your own area. We feel sure that after studying these plans you will appreciate the quality and detail of the Building Plans.

Study Plans are only available as digital downloads. Downloads are instant access and eliminate delivery costs, which is particularly beneficial for international customers. They can also be printed if you wish.

The Mana 24 design does not have a study plan, comprehensive design information is available on our site.

Buying more than one Study Plan? The following discounts will be applied automatically:

  • Two Study Plans: 10% off
  • Three Study Plans: 20% off
  • Four or more Study Plans: 30% off
Large catamaran with red sails cruising on the coast
Papers and articles spread out on a surface.

Pahi 63 Study Plan

£23.00

The Pahi 63 Study Plan is intended to help you decide if this design is for you.

Category:

Description

The Pahi 63 is a tribal boat, suitable for expedition sailing and for larger groups of people to cruise or eco-charter. It is based on traditional Polynesian double canoe principles, is most suitable for use in warmer climates.

The deck/accommodation layout resembles a village, with a central public area including ‘well’ and (optional) ‘hearth’, surrounded by private cabins. This centre deck and the separate aft and fore deck areas give three large emotionally different spaces, enabling people to have hours in seeming solitude.

This deck layout combined with the ‘Flexi Space’ hull cabins (all with their own entrance) enables 8-10 people to live peacefully together for weeks at a time.

Study Plan Contents

  • 3 x A3 Plan Sheets
  • 4 x A4 pages Design Details
  • 2 x A4 Sailing Performance Sheets
  • 3 x A3 Colour Photo Sheets
  • Materials List
  • 6 x pages magazine article extracts
  • 1 x copy of “Appropriate Technology in Catamaran Designs and Construction” (monograph – 10 pages plus illustrations)

Design Data

Building Method: Ply/Glass/Epoxy/Laminate
Length Overall: 63′ 19.20 m
Beam Overall: 28′ 8.53 m
Waterline Length: 51′ 15.5 m
Draft: 3′ – 5′ 0.9m – 1.5m
Weight: 8 tons
Loading capacity: 4.5 tons
Sail area: 1400 sqft 130 sqm
Building Time Estimate: 4000 hours

Visual Tour

Pahi 63 Photo Gallery Pahi 63 Videos

More Information

  • Design Discussion

    James compares Gaia’s design features with those of the charter Pahi 52. Spirit of Gaia’s Wingsail Rig is tested by other catamaran sailors.

  • In The Spirit

    An article from Cruising Helmsman magazine about Mark Smaalders’s cruise on Pahi 63 ‘Spirit of Gaia’ from Cairns to Darwin. He discusses Gaia’s characteristics from a traditional monohull sailor’s point of view.

  • Wharram’s Polynesian Dream

    Nic Compton learns how the unorthodox British designer, James Wharram, took his family and fans around the world in his handcrafted catamaran, gaining some valuable lessons along the way.

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