Contact Us

Home

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
Catamaran with intricate paint work
Papers and articles spread out on a surface.

Pahi 31 Study Plan

£17.50

The Pahi 31 Study Plan is intended to help you decide if this design is for you.

Category:

Description

The first of the Pahis, designed in 1979 after the building of a 35ft prototype, which successfully sailed the 1978 Round Britain Race. The PAHI shape has proven itself in rough weather conditions, in speed potential and ease of motion. At only 31′ she is still capable of ocean voyages. Standing headroom is under a large raised hatch.

The original Pahi 31 rig is a Bermudan cutter, with low cut, anti-twist, loose footed mainsail, but now she is also available with the Wharram Wingsail Rig, giving more clear centre deck space as the mast is placed further forward.

Study Plan Contents

  • 2 x A1 Plan Sheets
  • 1 x A3 Colour Photo Sheet
  • Materials List
  • 5 x Pages of magazine article extracts

Design Data

Building Method: Ply/Glass/Epoxy/Laminate
Length Overall: 31′ 9.45 m
Beam Overall: 16′ 3″ 4.95 m
Waterline Length: 25′ 7.6 m
Draft: 1′ 8″ 0.5 m
Weight: 1.5 tons 1500 kg
Loading capacity: 1 ton 1000 kg
Sail area: 295 sqft 27.5 sqm
Building Time Estimate: 1500 hours

Visual Tour

Pahi 31 Photo Gallery Pahi 31 Videos

Related Items