What's with "six" and me?
My boating experience is principally based on three different boats.
My Dad's Columbia Defender (flush-deck, 28.5-foot sloop) was hull #60 which we extensively raced in San Francisco Bay in the 1960s.
My 24-foot Bluewater Blackwatch pocket cutter was hull #60, mostly sailed in Suisun Bay in the 1980s.
My current (acquired in 2011) 35-foot trawler is hull #6.