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PT Boat 1850 horsepower engines

Old 11-03-2020, 05:41 AM
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Default PT Boat 1850 horsepower engines

Old 11-03-2020, 06:03 AM
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Thanks for sharing, very cool. I would love to see that puppy run. There are some videos of some PT style boats underway but I am not sure if they were the American version. Anyway, post more if you have them.

b
Old 11-03-2020, 08:01 AM
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Very cool. After watching this, I have to tell my favorite story. When I attended Graduate school at FIT in Ocean Engineering back in the late 1980's, the school had an old USN PT boat that they converted to a research vessel. They removed the highspeed engines and put some small diesels in, put two large cranes on deck for handling scientific equipment, and added a wet lab on deck and upgraded the sleeping area. It was the coolest research vessel on the planet and we obviously got a lot of looks cruising offshore or down the ICW. However, the upgrades/changes resulted in a top heavy vessel that tending to rock and roll during even the smallest seas. She couldn't get on a plane, so we were stuck with many long, slow, rolling trips to nowhere doing basic research. And we had the perfect name for her: "The Major Changer", as many wannabe ocean engineers and marine biologists quickly changed their mind about working on the ocean, and ended up in business or something else non-ocean related!
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Old 11-03-2020, 09:29 AM
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Originally Posted by Twinfin4 View Post
Very cool. After watching this, I have to tell my favorite story. When I attended Graduate school at FIT in Ocean Engineering back in the late 1980's, the school had an old USN PT boat that they converted to a research vessel. They removed the highspeed engines and put some small diesels in, put two large cranes on deck for handling scientific equipment, and added a wet lab on deck and upgraded the sleeping area. It was the coolest research vessel on the planet and we obviously got a lot of looks cruising offshore or down the ICW. However, the upgrades/changes resulted in a top heavy vessel that tending to rock and roll during even the smallest seas. She couldn't get on a plane, so we were stuck with many long, slow, rolling trips to nowhere doing basic research. And we had the perfect name for her: "The Major Changer", as many wannabe ocean engineers and marine biologists quickly changed their mind about working on the ocean, and ended up in business or something else non-ocean related!
1971 FIT grad. BS Oceanography. Never went on a boat while there.
Old 11-03-2020, 11:03 AM
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Fun times. You missed the RV Tursiops (sunk in Bahamas) , RV Delphinus I and II, and RV Osprey. Unfortunately FIT no longer has any vessels other than some small in-shore boats. The thing I remember about the PT boat was the steel deck that burned everyone's feet in the summer, and the diesel exhaust right next to the work deck so everyone would have to inhale the fumes while taking water samples!
Old 11-03-2020, 11:19 AM
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Very Cool - Thanks for posting
Old 11-03-2020, 11:44 AM
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Originally Posted by Bergertime View Post
I would love to see that puppy run.
Maybe not the hull, but there are vids of the 658's engines running:

Old 11-03-2020, 01:30 PM
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some cool footage
Old 11-03-2020, 03:12 PM
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There is another running PT boat: PT 305, a Huckins which was acquired by The WWII Museum in New Orleans. I was lucky enough to have an extensive tour during the rebuild. She has new V 12 Packards. The museum found a trailer load of them which had been purchased as surplus just after WWII--unused still in like new order, but they were torn down and rebuilt to spec. I believe that the Museum bought 6 of the engines.

90 minute rides aboard PT 305 were available on Saturdays (I don't know now with the COVID 19).

In S. Calif there was a boat called PT Joe. It had the original Packards, The middle one was removed and a GMC 6-71 was installed for 6 knot cruising at low fuel consumption. I had heard that PT Joe made one 45 minute run to Catalina and back and burned 1800 gallons of fuel.(They carried 3,000 gallons) She was owned by a judge in Newport Beach in the 50's and came to Long Beach Marina in the mid 1960's. She eventually ended up with the Sea Scouts in Rio Vista CA. Not sure if she is still around or not.

about PT 305 and the restoration.

Many of hulls which were called PT boats were actually Air Craft Rescue vessels or Crash Rescue Vessels. There were 140 of the 85 footers built. Others as small as 63 feet were also built. These had two of the 1200 HP Packard engines.

Here is a link to the 63' Air craft rescue vessels. These had four 500 hp Kermath engines. Many of the crash boats were made into yachts. A few have survived. All of these were made as "disposable" boats.
Old 11-03-2020, 03:37 PM
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Visited the World War ll museum in New Orleans back in 2015 and was able to tour a PT boat being restored there at that time that had been built in New Orleans during the war (by the same company that built the Higgins boats). They were working with original plans, all volunteers. I learned that when people describe the hulls as being made from plywood, the plywood used in those boats was not what you see in Home Depot. The hull was actually 2 layers (2 plys) of wood planks put together in a cross hatch pattern. Also, although the boats were 77' long, they felt much bigger than that to me. And there was almost no metal used. Even the gun mounts were on rounded, wooden bases. I also remember that the engines had an exhaust diverter that as I recall could send the exhaust underwater, which worked as a sort of silencer, so at slow speed they could run much quieter. The restoration was completed and somewhere I've seen some video on you tube of the boat underway. Pretty cool stuff.
Old 11-03-2020, 03:40 PM
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thataway beat me to it on the ww2 museum restoration--including the video!
Old 11-03-2020, 04:41 PM
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Awesome thanks for posting, love this kind of stuff!
Old 11-03-2020, 05:01 PM
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My dad and his mates on PT 225 in the Philippines during WWII and on a refurbished PT in Battleship Cove, Mass with his sons and grandsons.
Old 11-03-2020, 05:17 PM
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I'm glad the PT 305 story was mentioned. My friend's dad served on it ( Kupetz). His face got ripped up by a Brit...yes, Brit plane.

Joseph Brannan, a gunner's mate on PT-305, told of a near miss by a British bomber who thought he'd hit a German torpedo boat.

Brannan said his friend, motor machinist mate Alexis Charles Kupetz, had just stuck his head out of a hatch when shrapnel tore his cheek open. Kupetz was laid on the captain's bunk and Brannan held the wound closed while the PT crew sought a doctor, finally finding one on a French destroyer, Schick said.
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Old 11-03-2020, 05:22 PM
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PT's were exciting boats - the Freeman's of their time.

That's my dad starboard side under the flag. The second picture is arm patches from the boats he was on.




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Old 11-03-2020, 06:21 PM
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The museum was offering rides on PT 305. No sure that’s still happening. Since Co vid.
Old 11-03-2020, 08:21 PM
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Originally Posted by First Light View Post
PT's were exciting boats - the Freeman's of their time.

That's my dad starboard side under the flag. The second picture is arm patches from the boats he was on.




Very cool. My dad was in Ron 17. I had the privilege of attending several of their “bull sessions” before most passed away.
Old 11-03-2020, 09:36 PM
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In 1958 or so there was an inter island ferry boat business in Hawaii that ran a converted PT boat.
It was gutted for cargo and a dozen or so passengers as well as a couple vehicles on deck.
My ride from Honolulu to Hilo was probably the worst trip I’ve ever experienced!
Fuel problems right off the bat, running real slow on one engine across the Molokai channel all night long, rocking and rolling like crazy.
The business failed shortly after...
Old 11-04-2020, 03:16 AM
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This started me on a YouTube "rabbit hole" trip last night watching some really interesting videos about these boats and the men who crewed them. Both were impressive.
Old 11-04-2020, 04:39 AM
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Screw your puny diesels. 1500 hp @ 2400 rpms is 3300 ft. lbs. of torque.........

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