These two boats U-27 Slo mo IV (4 first picture) and Slo mo V (5) built in Seattle in mid to late (50's) were the first unlimited hydro's. Built by Ted Jones for Stan Sayers who owned a Chrysler Plymouth dealership in down town Seattle. The picture below is of the IV being either pushed into or held back from the dealership garage. I knew the Ted Jones kids. Ron the son came often to the high school I graduated from in Tukwila and sat in with the Band as he had been a band member when attending Foster. I once went to the home of Ted Jones, because Ron had invited there for a reason I don't recall now. Ted and his wife also had twin girls, Shirley and Sharon were their names as I recall, (could be mistaken on that). To me at 17, as were they, were beautiful. I wanted to get to know them better, but life just got in the way. OH and BTW the two Allison engined Miss Triftway was on the trailer in the back yard. Ted Jones Jr. often came to band practice and often times accompanied us on Band trips around the area. He once came in and made us honorary members of the then popular Confederate Air Force of which he was full fledged member, giving each a certificate of authenticity. This gave the Jones access to the Allison's that powered those boats.......... From Wikipedia: His son, Ron Jones, Sr., and grandson Ron Jones, Jr. both also had distinguished careers with unlimited hydroplane racing. (This is just my 2 bits (25 cents for you you younger guys) worth on the subject.) Just one quick story told to us about the 1950 Gold Cup win by the IV boat. You will notice two people in the boats back then. Driver and Mechanic. For that race Ted Jones was driving, Stan Sayers was riding shotgun. The Allison being as loud as they were, (are) made it impossible to hear, (no head sets) so they worked out hand signals. During the race Ted lost track of what position they were in and signed Stan with , "where are we, what position"). Sayers being half scared out of his mind had forgotten the signals except signalling, "go faster, go faster", by shoving his hand rapidly forward, and thus they lapped the entire field twice I believe it was.