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Table of details and specifications of USA-051
  Designer Britton Chance Jr. (USA)
  Builders Oy Vator, Vator Oy AB. Helsinki (FIN)
  Material Mahogany, carvel planked
  1st certificate issued 1963
  Original boat name Complex V
  Original country USA
  Original sail number 051
  Current location Tall Timbers, MD (USA)


Data Transfer - as origin of the boat now indicated - 15.11.2014 by Kaspar Stubenrauch
Previous notes on Vator #753:

USA-51 - 07.11.2014 by Matti Muoniovaara
This boat is Complex V USA-51.
This inventory is not an Authority to give any sailnumbers to any boats. It is solely and only the task of the MNA (Member National Authority). edit
5.5m Vator #753 - search for US sailnumber - 07.10.2012 by Kaspar Stubenrauch
As we are still searching for the original sailnumber of this boat, an intermediate number has been given to it, for actual races, in which she is starting as 5.5 USA 98. edit
Vator #753 - Alu mast by Kungsörs - 01.11.2010 by Kaspar Stubenrauch
Daniel Rossi has informed that the rigg on the boat has "Kungsörs" engraved in the spreader brackets. Hence, the aluminum mast was built by Kungsörs Båtvarv AB; still, the search for the original sailnumber of the boat remains open. edit
Construction Notes - 05.08.2009 by Daniel Rossi
Hull planking: Mahogany
Frames: Ash
Deck Beams: Spruce
Keel has a bulb with attached rudder edit
Searching for the origin - Vator #753 - 12.12.2008 by Kaspar Stubenrauch
Information from the owner, Daniel Rossi:
"I have .... 5.5 meter built by Vator (Hull #753) that I put back together in 1992-1996.... I just put this boat back in the water after having it in storage for about 7 years."
Daniel will add photos and hopes for input on the boat's history
Complex V US-51 - 06.11.2014 by Matti Muoniovaara
Complex is Vator boat #753 built 1963 for Dr. Britton Chance. Those days Jr. was an amateur designer. It's the first design of young Brit.
Rossi's boat is this boat.
Complex V, US-51 - 01.08.2013 by Daniel Rossi
This was the first Britton Chance, Jr. 5.5 design that was built. - July, 1970 Sports Illustrated Article.

G. Cox raced Complex V in the 1965 Worlds (Italy) and took 3rd place/Bronze.
Original sails for several of the Complex series boats owned by Dr. Britton Chance - 28.02.2009 by Rex Howland
Dr. Chance has given me several of the original sails for the Complex series of 5.5 metre boats he owned. They include sails for Complex III, Complex V, and Complex VI. All of these sails can still be used (at least for historical purposes).

Rex Howland
Designer of Complex V - 03.06.2008 by Rex Howland
Britton Chance Jr. was the designer of Complex V.

5.5 metre sailboats with name of Complex were:
Complex II US - 1 built in 1952
Complex III US - 21 built in 1959
Complex V US - 51 built in 1963
Complex VI US - 78 built in 1968
Note: Complex II name came from biological discovery made by Dr.Britton Chance.

In addition, the Chance family sailed on State 6 US - 58 built in 1964.

Rex Howland

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5.5 USA 51 "Complex V" - upwind

Ownership history

Table of the history of sail number, name and ownership of USA-051
Sail# Boat name Owner name
USA-051 "Complex V" Dr. Britton Chance (1963-?)  
USA-051 "Complex V" F. Gardner Cox (?-?)  
USA-051 "Purple Haze" Daniel Rossi (1992-?)  

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