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Table of details and specifications of SUI-039
  Designer Henri Copponex (SUI)
  Builders Louis Plojoux, Corsier-Port, Genève (SUI)
  Material Mahogany, carvel planked
  1st certificate issued 1960-05-17
  Original boat name Mayanus
  Original country SUI
  Original sail number 039
  Current location


5.5 Z 39 "Mayanus" - first owner - 01.05.2020 by Kaspar Stubenrauch
As drawings from the Ohlson archives do connect "Ylliam XIV" to Z-36, the search is on, if B. Janet was the first owner of Z-39.
5.5 Z 39 possibly "Ylliam XIV" - 28.04.2018 by Kaspar Stubenrauch
As the "Aisher Questionnaire" has presented Z 54 to be "Ylliam XV", the earlier assumption that Z 39 was "Ylliam XIV" to A. Firmeinch is now noted. Z 36 then was "Nyroca IV" of G. Firmenich.
Correction - 28.04.2008 by Site Administrator
Original name and owner corrected from "Bacouni III" to "Ylliam XV" on 28.04.08 by Seb.
Hypothesis - 28.04.2008 by Site Administrator
"Ylliam XV" is believably Z-39 following one source : the register of the Société Nautique de Genève; and a deduction : on the Henri Copponex drawings HC001, HC057, HC058 and HC100 (archives ref.), dated all of nov. 1959, it is mentionned "Ylliam XIV à André Firmenich" either by mistake, or (hypothesis) because H.C. proposed that design to André Firmenich to be the XIV, lost this order which went to Ohlson and became Z-36, but build it finally in 1960 at Corsier Port ?
The "Ylliam"5.5's - 28.04.2008 by Site Administrator
There has been seven 5.5 named "Ylliam" (the other numbers of the dynasty are other metrics or multihulls). "Ylliam" is the anagram of "Mailly", which is the name of the domain owned by the Firmenich family near Versoix, on the Leman lake.
"Ylliam X" is Z-11 (see SUI-011) Copponex/Corsier Port 1955 believably immediately sold to Charles Stern and become "Antiope VII".
"Ylliam XI" is Z-15 (see SUI-015)(and not XII as mentionned by mistake in the rating certificate), Copponex/Corsier Port 1956.
"Ylliam XII" is Z-23 (see SUI-023), Copponex/Corsier Port 1957.
"Ylliam XIII" is Z-32 (see SUI-032), Copponex/Corsier Port 1959.
"Ylliam XIV" is Z-36 (see SUI-036), Ohlson/Kungstor 1960.
"Ylliam XV" is believably Z-39 (see detailed note), Copponex/Corsier Port 1960.
"Ylliam XVI" is Z-66 (see SUI-066), Hunt/Vator OY 1964.
Story reconstituted together with Pierre Girard and Noël Charmillot at the Musée du Léman on 03.11.06.

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Ownership history

Table of the history of sail number, name and ownership of SUI-039
Sail# Boat name Owner name
SUI-039 "Mayanus" Bernard Janet (?-?)  
SUI-039 "Bacouni II" Eric Amrein (1961-?)  
SUI-039 "Bacouni II" E. Munari (?-?)  

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