I'd appreciate it if you would let me know if you find any. Not all of the boats were placed in service by the USN, some were built for shipment to England or Russia. Also on this page is a brief history of the early boats and some information about the two Plywood Derbies which were part of a testing process by the USN for developing the PT boats.
They were speed runs of approximately miles at full throttle in open sea. The navsource site has many images and detailed information for specific boats. Other excellent information sources are forum posts at ptboats. According to a post at the ptboats. At the forum is a photo of PT 7 in Canadian colors. England , , , 85, , , , , , PT 6 was built in two designs, to the original Sparkman and Stevens design and to a design modified by Higgins. Several credible sources list both as being sent to England while the book At Close Quarters states that the first PT 6 was sold to Finland.
Elco PT's were built for England but never shipped. Russia 86, 89, , , , , , , , , , PT's were Elco 80' boats sent in knocked down kit form. Post War: Cuba Norway , Korea , , Reassignments: Yugoslavia , from England , , , , , Egypt , from England , Italy , from England 49, 57, 88, 90, 92, 94 According to navsource. Turkey , from England The next two tables are Elco specific. Much of the date information found below was taken from Steve Laroe's work found at the hazegray site. His lists detail specific dates for all boats, in many categories:.
Elco PT Class Hull Numbers Hull numbers followed contract order assignment not PT numbers PT Hull Numbers They were powered by by two V horse power Vimalert engines, produced by the Stirling Engine Company. The boats never saw service as Maine Built Boats For Sale Youtube PT boats due to performance problems. On December , the Navy changed their classification to that of small boat C and C respectively.
Packard 4M engines were installed, and the boat was used throughout the war as a familiarization for motor machinists. PT's 3 and 4 were 59' boats built by Fisher Boat Works. Their design was similar to the Fogal boats. Originally both boats were Vimalert powered Sparkman and Stevens designs. Andrew Jackson Higgins Sr. He was turned down by the Navy and built it to original plan. He used his own capital to construct another boat with his own design modifications, powered with three Packard 4M engines.
The result was convincingly superior and the most successful of the boats fathered by the design competition. This boat became the official PT 6. Several credible sources list the original Sparkman and Stevens design the tentative PT 6 as being sent to either England or Finland:.
The second PT 6, an 81' boat designed and built by Higgins, was placed in service in Squadron 1. PT 8 was the only all aluminum hulled boat developed during the war.
They were powered by two Allisons and one Hall-Scott. There were two Allisons of hp each, but actually they were four hp engines mounted on two common blocks. The Hall-Scott was only hp, and was used for slower speeds and backing. These boats were exceptionally heavy when placed in service because the Navy yard had used destroyer fixtures and fittings on the boats. The main wing engines lacked reverse which limited tight maneuverability.
The wing engines were also slow to start, they lacked self starters and depended on the Hall-Scott engines to get the boat to a speed of 15 knots, and then to drag in the larger Allisons. This boat had much influence over certain key aspects of final hull specifications for the rest of the war. PT's 10 through 19 were 70' boats built by Elco and were based on PT 9 with some Navy requested changes. They were powered by three Packard 4M engines.
PT's and the 77' PT's were designed for two enclosed twin. They were found to be unsatisfactory and later Elco drawings show them replaced by open, manually operated twin. They were sent to England. PT's 20 through 44 were 77' boats built by Elco.
The design was again based on the Scott-Paine designed PT 9. The extra length was added to handle a USN change in specifications of an overall length between 75' and 82' to handle four larger torpedoes, 21" diameter as opposed to the original plan for at least two 18" ones. This design was the first to see combat. PT's 45 through 48 were 77' boats built by Elco. Some visible differences are that the cabin design for PT's changed to a more streamlined shape aft of the bridge, and the forward cabin is flattened with the sides angling back like the Elco 80' boat.
The new design also had four forward windshield panels as opposed to three on the earlier boats. PT's 49 through 58 were 77' boats built by Elco for England for lend-lease. One visible difference is that the bridge windshield is slightly different on these ten 77' boats. PT's 59 through 68 were 77' boats built by Elco for England for lend-lease.
They were never sent to England. PT 69 was a 72' boat built by Huckins Yacht. It was powered by four Packard 4M engines. This boat was not placed in service as a PT. PT 70 was a 76' boat built by Higgins. It was dubbed the "Higgins Dream Boat". It was powered by three Packard 4M engines. PT's 71 through 94 were 78' boats built by Higgins. PT's were built for Russia although most were reassigned to England.
PT's 95 through were 78' boats Boats Built In Louisiana Uk built by Huckins. None of these boats saw combat but were used for training and homeland defense area patrol. PT began the last major change to Elco's hull design. Length was increased to 80'. This design is the one most often modeled. The two Plywood Derbies were speed runs of approximately miles at full throttle in open sea. It opened on July 11, The first Plywood Derby was held on Ranger Aluminum Boats For Sale In Louisiana Youtube July 24, and had nine entries.
Conditions were a moderate swell with a cross chop. The entrants were:. Elco's PT 20 crossed the finish line first with a PT 31 was second with Four of the boats which entered the run suffered structural damage of varying degrees. The contest results were questioned because of the light seas and the fact that some boats had to be ballasted due to incomplete ordnance loads.
The only boats which had the complete 20, pound ordnance load aboard were the Elco's, while the Higgins Dream Boat PT 70 had none of the required ordnance installations. The other boats had some equipment but not the complete load.
The load was simulated with deck weights which gave an unnatural load displacement and was largely the cause of PT 70's damage because of the unrepresentative moments set up by the ballast. PT 33's failure can be accounted for by the old system of interrupted longitudinals used by Elco in its early construction. The second Plywood Derby was held on August 12, to satisfy officials and entrants of a fair test. The distance remained the same. Sea conditions were more satisfactory, lumpy with heavy cross swell.
These heavy swells ran from six to eight feet tall, with occasional swells of ten to twelve feet. The heavies and conditions encountered on the run were short steep seas running as high as fifteen feet. There were only six entries for this run:. Elco's PT 21 crossed the finish line first with a The Higgins PT 70 was a close second with PT 8 tied with PT 28 at Last was the British boat with PT 69 suffered structural damage and was forced to withdraw. For comparasion reasons a destroyer, DD, ran the course with the PT's and finished with a The destroyer had a running start so was up to speed at the beginning.
The long range speed in rough water of the only slightly slower PT's impressed Navy officials. PT 25 off Markus Island, Updates April 30 update: Additions and corrections made.
Bulkley, Jr.
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