Well I spoke to dad today, he told me what he knew, anyhow the Carter 33 was produced by a builder in Blacktown in Sydney's western suburbs, the name of the gentleman was Allen, he couldn't remember the company name nor surname but did mention to me that they were a group of 5 men
building them, they apparently produced them up until 1988 before they closed down for whatever reason.
The Passage 33 used the same hull
design as the Carter 33, but used a different deck
design that was modified by Graham Wallicker (might me Wollicker) to encompass the aft cabin
The Carter 30 was produced by a company in Mona Vale on Sydney's northern beaches called Southern Cross marine
they went belly up in 1985, but sadly they had a rep of shoddy workmanship, I'm told the owner of Southern Cross was Jim Boise. Many of the 30's they produced leaked around the keel
, they always seemed reluctant to rectify the problem.
It seems Bill Barry Cotter purchased the moulds from overseas and imported them sometime in the late seventies, it also seems there were more than one set of moulds for the 30 and 33.