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13.12.2020, adminIn Washington, Beth, sight. Oh, We Contingency Erect the Vessel is a diversion for you. What creates them visit is a fabric they have been done from, ring it with the neck cuff.
I believe this is a great help as the most probable material for this build is plywood, and you now have the option to cut it out in one large piece directly from the template.
Below is a preview of the three sheets. The quality of this tiny image doesn't make it justice, but it should give you a good idea of what is included.
Before you embark on this project, realize I have not built this boat and can only offer my experience from the much smaller Pt boat. Having said that, I see no reason this much bigger PT boat couldn't be built in the same fashion, only with plywood instead of balsa. Part Two: Assemble the Hull structure. Part Three: Planking the hull. Part Four: Adding hatch coaming and deck. Part Six: Building the Deck Houses. Part Seven: Building the MG turrets.
If you're interested in either of the two smaller versions of this PT boat design you can find more information about the plans here. Return to Plans Store. PT Higgins had her stern sheared off by a collision with PT during a night mission in the Mediterranean on 9 March and yet returned to base for repairs. PT Elco was holed through the bow off Bougainville on 5 November , by a torpedo which failed to detonate; the boat remained in action and was repaired the next day.
In , an inquiry was held by the Navy to discuss planing, hull design, and fuel consumption issues. This resulted in the November Miami test trial between two Higgins and two Elco boats, but no major additional modifications were made before the end of the war. During the war, Elco came up with stepped hull designs "ElcoPlane" which achieved significant increase in top speed. Higgins developed the small and fast foot 21 m Higgins Hellcat , which was a slight variation on their original hull form, but the Navy rejected them for full production due to increased fuel consumption and other considerations.
After the war, Lindsay Lord, who was stationed in Hawaii during the war, recorded the Navy's planing hull research and findings in the book Naval Architecture of Planing Hulls. This covers PT boat hull design and construction, and provides hull test data as well as detailed analysis of the various PT boat designs.
The primary anti-ship armament was two to four Mark 8 torpedoes , which weighed 2, pounds 1, kg and contained a pound kg TNT warhead. These torpedoes were launched by Mark 18 inch mm steel torpedo tubes. These torpedoes and tubes were replaced in mid by four lightweight These torpedoes were carried on lightweight Mark 1 roll-off style torpedo launching racks.
The Mk13 torpedo had a range of 6, yards 5, m and a speed of PT boats were also well armed with numerous automatic weapons. The ring mount was designed by both Elco and Bell , and designated Mark 17 Twin 50 caliber aircraft mount.
On early series of boats, this cannon was mounted on the stern. Later in the war, several more of these 20 mm cannons were added amidships and on the forward deck.
Beginning in mid, some boats were fitted with one or two. Occasionally, some front line PT boats received ad hoc up-fits at forward bases, where they mounted such weapons as 37mm aircraft cannons, rocket launchers, or mortars. When these weapons were found to be successful, they were incorporated onto the PT boats as original armament. One such field modification was made to Kennedy's PT , which was equipped with a single-shot Army M3 37mm anti-tank gun that her crew had commandeered; they removed the wheels and lashed it to 2x8 timbers placed on the bow only one night before she was lost.
The larger punch of the 37mm round was desirable, but the crews looked for something that could fire faster than the single-shot army anti-tank weapon. Their answer was found in the 37mm Oldsmobile M4 aircraft automatic cannon cannibalized from crashed P Airacobra fighter planes on Henderson Field, Guadalcanal. After having demonstrated its value on board PT boats, the M4 and later M9 cannon was installed at the factory.
These features made it highly desirable due to the PT boat's ever-increasing requirement for increased firepower to deal effectively with the Japanese Daihatsu -class barges , which were largely immune to torpedoes due to their shallow draft.
By the war's end, most PTs had these weapons. The installation of larger-bore cannons culminated in the fitting of the 40mm Bofors gun [21] on the aft deck. Starting in mid, the installation of this gun had an immediate positive effect on the firepower available from a PT boat. This gun was served by a crew of 4 men, and was used against aircraft targets, as well as shore bombardment or enemy surface craft.
Lieutenant Kennedy was the first commanding officer of PT after its conversion. These 16 rockets plus 16 reloads gave them as much firepower as a destroyer's 5-inch mm guns. By war's end, the PT boat had more "firepower-per-ton" than any other vessel in the U. PT boats also commonly carried between two and eight U.
Navy Mark 6 depth charges in roll-off racks. Additionally, a few PT boats were equipped to carry naval mines launched from mine racks, but these were not commonly used. With the exception of the experimental PT boats, all U.
PT boats were powered by three marine modified derivations of the Packard 3A V liquid-cooled, gasoline-fueled aircraft engine. Their superchargers , intercoolers , dual magnetos , and two spark plugs per cylinder reflected their aircraft origins. Packard's licensed manufacture of the famed Rolls-Royce Merlin aircraft engine alongside the marine 4M has long been a source of confusion.
The 4M initially generated 1, hp kW. The 5M introduced in late had a larger supercharger, aftercooler, and increased power output of 1, hp 1, kW.
However, subsequent additions of weaponry offset this potential increase in top speed. Fuel consumption of any version of these engines was exceptionally heavy. A PT boat carried 3, US gallons 11, l of octane aviation fuel , enough for a 4M equipped boat to conduct a maximum hour patrol. Hull fouling and engine wear could both decrease top speed and increase fuel consumption materially. PT boats operated in the southern, western, and northern Pacific, as well as in the Mediterranean Sea and the English Channel.
Originally conceived as anti-ship weapons, PT boats were publicly credited with sinking several Japanese warships during the period between December and the fall of the Philippines in May Although the American Mark 8 torpedo did have problems with porpoising and circular runs, it could and did have success against common classes of targets.
Introduction of the Mark 13 torpedo to PT boats in mid all but eliminated the early problems that PT boats had with their obsolete Mark 8s.
PTs would usually attack at night. The cockpits of PT boats were protected against small arms fire and splinters by armor plate.
Direct hits from Japanese guns could and did result in catastrophic gasoline explosions with near-total crew loss. Bombing attacks killed and wounded crews even with near misses.
Several PT boats were lost due to friendly fire from both Allied aircraft and destroyers. Initially, only a few boats were issued primitive radar sets. Navy PTs were eventually fitted with Raytheon SO radar , which had about a 17 nmi 20 mi ; 31 km range. Having radar gave Navy PTs a distinct advantage in intercepting enemy supply barges and ships at night. As more PTs were fitted with dependable radar, they developed superior night-fighting tactics and used them to locate and destroy many enemy targets.
During some of these nighttime attacks, PT boat positions may have been given away by a flash of light caused by grease inside the black powder-actuated Mark 8 torpedo tubes catching fire during the launching sequence. In order to evade return fire from the enemy ships, the PT boat could deploy a smoke screen using stern-mounted generators.
Starting in mid, the old Mark 18 torpedo tubes and Mark 8 torpedoes were replaced. The new Mark 1 "roll-off" torpedo launcher rack loaded with an improved Mark 13 aerial torpedo effectively eliminated the telltale flash of light from burning grease, did not use any form of explosive to launch the torpedo, and weighed about 1, lb kg less than the tubes.
The effectiveness of PT boats in the Solomon Islands campaign , where there were numerous engagements between PTs and capital ships, as well as against Japanese shipborne resupply efforts dubbed "The Tokyo Express " operating in New Georgia Sound called "the Slot" by the Americans , was substantially undermined by defective Mark 8 torpedoes.
The Japanese were initially cautious when operating their capital ships in areas known to have PT boats, knowing how dangerous their own Type 93 torpedoes were, and assumed the Americans had equally lethal weapons.
The PT boats at Guadalcanal were given credit for several sinkings and successes against the vaunted Tokyo Express. In several engagements, the mere presence of PTs was sufficient to disrupt heavily escorted Japanese resupply activities at Guadalcanal.
Some served during the Battle of Normandy. Perhaps the most effective use of PTs was as "barge busters". Since both the Japanese in the New Guinea area and the Germans in the Mediterranean had lost numerous resupply vessels to Allied air power during daylight hours, each attempted to resupply their troop concentrations by using shallow draft barges at night in very shallow waters. The shallow depth meant Allied destroyers were unable to follow them due to the risk of running aground and the barges could be protected by an umbrella of shore batteries.
The efficiency of the PT boats at sinking the Japanese supply barges was considered a key reason that the Japanese had severe food, ammunition, and replacement problems during the New Guinea and Solomon Island campaigns, and made the PT boats prime targets for enemy aircraft. The use of PT boat torpedoes was ineffective against these sometimes heavily armed barges, since the minimum depth setting of the torpedo was about 10 feet 3 m and the barges drew only 5 feet 1.
One captured Japanese soldier's diary described their fear of PT boats by describing them as "the monster that roars, flaps its wings, and shoots torpedoes in all directions.
Though their primary mission continued to be attack on surface ships and craft, PT boats were also used effectively to lay mines and smoke screens, coordinate in air-sea rescue operations, rescue shipwreck survivors, destroy Japanese suicide boats, destroy floating mines, and carry out intelligence or raider operations.
After the war, American military interviews with captured veterans of the Imperial Japanese Navy, supplemented by the available partial Japanese war records, were unable to verify that all the PT boat sinking claims were valid.
PT boats lacked a large capacity refrigerator to store sufficient quantities of perishable foods. While docked, PT boat squadrons were supported by PT boat tenders or base facilities which supplied boat crews with hot meals.
As PT boats were usually located near the end of the supply chain, their crews proved resourceful in bartering with nearby ships or military units for supplies and using munitions to harvest their own fish.
At the end of the war, almost all surviving U. PT boats were disposed of shortly after V-J Day. Hundreds of boats were deliberately stripped of all useful equipment and then dragged up on the beach and burned.
This was done to minimize the amount of upkeep the Navy would have to do, since wooden boats require much continuous maintenance, and they were not considered worth the effort. The boats also used a lot of high octane gasoline for their size, making them too expensive to operate for a peacetime navy. A few one 80' Elco, one 72' Vosper, and three 78' Higgins were cut up and destroyed between and , leaving a known total of 12 PT boats, and 2 experimental PT boat hulls in various states of repair, surviving today in the U.
PT is possibly the last surviving foot 23 m Elco PT boat. This second Squadron 3 was the first to arrive in the Solomons and saw heavy engagement with the "Tokyo Express".
PT 48 was one of the first 4 boats to arrive at Tulagi, on 12 October PT is today in Pt Boat Construction Plans 5g need of major restoration, after having been cut down to 59 feet 18 m and used as a dinner cruise boat. Because of this boat's extensive combat history, having survived 22 months in the combat zone at Guadalcanal more time in combat than any other surviving PT boat , a preservation group, "Fleet Obsolete" of Kingston, New York , acquired and transported it to Rondout Creek in for eventual repair.
Squadron 22 was operating with the British Royal Navy Coastal Forces , and saw action along the northwest coast of Italy and southern coast of France. In June the squadron was shipped to the U.
PT was cut down to 65 feet 20 m for use as an oyster seed boat in Crisfield, Maryland. After a lengthy restoration [34] [35] PT has been restored to a seaworthy, operational vessel.
The squadron was operating under the British Coastal Forces, and saw action along the northwest coast of Italy and southern coast of France. In April the squadron was shipped to the U. Coincidentally, the PT "Oh Frankie! PT is restored but non-operational in a static diorama display without engines installed. Her external restoration was completed by the Texas group in , and is to a high standard.
In late June the squadron was shipped to the U. After the war, the ex-PT was cut down to 65 ft 20 m and highly modified into a sightseeing boat and fishing trawler. PT , an foot 24 m Elco boat, was placed in service on 2 December George C. The business was later sold to Capt. Charles Schumann in the s. He named the vessel Schumann's "Big Blue" and ran the business until Remarkably, the PT was sold to the son of the original owner, Capt. Ronald G. Plans are for restoring the vessel to recreate the World War II appearance.
PT was returned to Elco after being sold and was heavily modified into a yacht, which was leased to actor Clark Gable. He named the boat Tarbaby VI , and used her through the s. The boat was serviced and stored by Elco. She was sold several times, and moved to Kingston, NY for possible restoration.
The boat is owned by PT Boats, Inc. The quality of the restoration was extremely high, and the boat is on display inside a weatherproof building, on blocks out of the water. She is available for public viewing, and has portions of her hull cut away to display the cramped interior of the crew's quarters. General visitors are not allowed inside the boat in order to help preserve her historic integrity.
PT , a Higgins foot 24 m boat, has been converted into a charter fishing boat. She is located in San Diego and is now named Malihini. Navy PT boats afloat today. Maintained by an all volunteer group, it is powered by the three Packard V12 5M gas engines [42] and includes all weapons, electronics, equipment and accessories restored to appear as they did the day the US Navy accepted the boat, 31 July PT , a surviving Vosper built at the Annapolis Boat yard in Maryland, has been used as a yacht, and has since been acquired by the Liberty Aviation Museum to be restored back to original Vosper configuration.
Her deck house was reconfigured to partially resemble an foot 24 m Elco instead of its original Vosper 70 ft configuration. PT was acquired by Fleet Obsolete and moved to Kingston. There PT allows up to 49 tourists the chance to ride on a "PT boat". This boat is the only U. Coast Guard regulation-approved PT boat licensed to take passengers for hire, and the only surviving U.
She represents the final class of Elco's with significant updates to the superstructure and radar and was intended for MTBRON 44, but was cancelled due to the end of the war.
PT "Tail Ender" is a foot 24 m Higgins. She was retired from service in the late s. Kennedy's inaugural parade to represent PT , with the PT hull number painted on the bow, and several of PT' s surviving crew members manning the boat.
PT-3 was designed by George Crouch and employed lightweight planing hull construction methods. A foot 18 m barrel-back which provided increased strength to the sides and deck , a unique double longitudinal planked mahogany outer planking and Port Orford cedar inner planking lightweight hull on bent laminated oak framing, she was the "featherweight" of transportable PT boat design, but was later rejected by the Navy during trials in after being deemed too short to carry 4 torpedoes, as well as being able to only launch torpedoes stern first, which was a procedure considered too dangerous by BuOrd.
After testing was completed, PT-3 was transferred to Canada in April under lend-lease. She was transferred back to the United States in April Now located in a New Jersey boatyard in awaiting restoration. PT-8 built at Philadelphia Naval Shipyard in Louisiana was built entirely from aluminum but did not pass the speed acceptance criteria for use as a PT boat for the U.
Navy due to its weight. She was reclassified as a harbor patrol boat YP for the duration of the war. PT-8 was stored in a yard for several decades in Baytown, TX, but has since moved. The two Vosper boats in England were built by Vosper itself, and the first is in fairly good condition at Portsmouth. The second UK built boat is in private hands, floating on a canal north of London and being used as a private residence, though it is remarkably intact in its World War II configuration.
Ten Higgins boats were delivered in for use by the Argentine Navy during the late s up until the late s. The original �66 McHale's Navy TV series used a Vosper design PT [49] Prior to starring in the television series this boat was purchased as war surplus by Howard Hughes and was used as the camera chase boat when the Spruce Goose made its only flight. The stern of the Vosper boat is visible in the footage of that event. For the movie PT , several foot 25 m USAF crash rescue boats were converted to resemble foot Elcos when the few surviving boats were found to need too much work to make them seaworthy for use during the film.
From Wikipedia, the free encyclopedia. World War II patrol torpedo boat. For other similar vessels, see torpedo boat and motor torpedo boat.
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. See also: List of PT boat bases. This article needs to be updated. Please update this article to reflect recent events or newly available information.
June Retrieved 21 April Popular Mechanics. Hearst Magazines. October The Wild Places. Naval History and Heritage Command.
United States Navy. Retrieved 27 April Retrieved 23 July Hyperwar Foundation. Crane Technologies. PT John F. Kennedy in WW II.
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