Elementarry - Norway
This blog will follow the construction of an extended Elementarry, the predecessor to the E25. I put my main project on hold last year (painful!) to pursue a telescoping mast design, starting with a smaller prototype to test its feasibility. The rig will feature a single sail on a three-section D-shaped mast. Unlike a schooner rig, the rudder location is more critical for the shunting, so I’ll also test rudder design and construction methods.
C60 - Peru (For sale)
This boat is now for sale. More info here.
C60 under construction at Ballotta, Peru. www.cata-ballotta.com
Building blogs:
C60 Peru building blog 2020
C60 Peru building blog 2019
C60 Peru building blog 2018
C60 Peru building blog 2017
C60 Peru building blog 2016
C50-Australia
C50 under construction in Australia
C50 under construction in Australia. Follow the build here.
C50 - Sweden
These polars were prepared by Rick Willoughby based on theory validated by his several years of optimising the 18m proa in Melbourne.
C50 under construction in Sweden. The owner has modified the leeward hull and extended it to 53 feet.
C53 VPP
These polars were prepared by Rick Willoughby based on theory validated by his several years of optimising the 18m proa in Melbourne. The polars are for a slightly longer (53′ vs 50) version of the C50 with 10 sqm less sail area.
The first is the base line, the second with one reef at 20 knots TWS and the third with the weight distribution optimised for speed. Of note is that these speeds are achieved without extras. Polars for other high performance cruising multis are similar, but require expensive, time consuming and difficult to set well extras.
As can be seen from the blog, Rickard is a careful, accurate builder. He has weighed the built components and is confident the boat will weigh 4,500 kgs ready to cruise.
It will be fascinating to see these polars confirmed when the boat is launched.
Baseline
One reef (60 m2)
Weight distribution optimised for speed