[r-t] Ocean Finance Doubles

Philip Earis pje24 at cantab.net
Fri Mar 21 23:56:08 UTC 2008

This evening we rang an extent of a new asymmetric Doubles Principle - Ocean 
Finance Doubles.

There are six changes per division - the notation for a plain division is 

To obtain an extent, there are two types of calls:

T = 345 (instead of 123) at division end
A = 145 (instead of 123) at division end


Extents usually consist of an assembly of mutually true courses.  This one 
doesn't.  So how does it "work"? 

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