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PT Boats of WWII
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PT Boats - General
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[StartQuote] [StartQuote] Hi Don, I would be really surprised if it could do 25 knots with 2 of those Detroit 3V12's. I say this from having seen the P520, an 85 foot AF Crash Rescue Boat powered located in Long Beach Ca and owned by Bud Tretter. He has installed those same engines and it tops out at about 18-20 knots. They are great engines but they arent that fast and they are also pretty heavy. I sure wish the 486 /109 could get some Packard V12's instead! Jerry PT 658 Portland Jerry Gilmartin[EndQuote] Hi Jerry! I know this is an old post and Ron no longer owns the boat. I did visit the boat up in Kingston this past June 2017. She needs a lot more work now and those poor old 12v71's are not going to be doing work anytime soon. However, I am just going to add that when I sailed on the boat in 1979 when it was the Sightseer, we would actually race against Ronnie Sinn with his Big Flamingo (Quad 12v71's in the Big Flamingo).
Full out with us pushing the governors wide open, we logged 23.5 knots against the Flamingo! (Even with nearly 125 people onboard!) Those Elco's sure did know how to move on the water. Of course the Sightseer was built for speed as a planing hull while the Big Flamingo was not. It is important to note, the engines on the Sightseer were not located all the way aft like the Packards. The 12v71's were installed were the gas tanks would have been.
Former crew member of the Big Blue Sightseer ex-PT 486[EndQuote]
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