However, curing the deep-running problem caused more prematures and duds even as more hits were being achieved. On 9 April 1943, USS Tunny attacked an aircraft carrier formation. "[14], Torpedoes were sophisticated and expensive. Make sure you have proper ventilation with any portable heater. This reliable garage heater heats 2, 000 square feet up to 10 hours on a full tank of fuel. King, who "lit a blowtorch under the Bureau of Ordnance". Submarine torpedoes, such as the Mark 14, are constrained by the dimensions of the submarine's torpedo tubes: 21 inches in diameter and a certain maximum length. The short supply of Mark 14 torpedoes was compounded by a 10 December 1941 Japanese air raid on Cavite Navy Yard. Its small budget did not permit live fire tests against real targets; instead, any torpedo that ran under the target was presumed to be a hit due to the magnetic influence exploder, which was never actually tested. A quick fix was to encourage "glancing" shots[86] (which cut the number of duds in half),[87] until a permanent solution could be found. [66], On May 8, 1943, Lockwood made a list of torpedo failures gleaned from ULTRA intercepts. Christie insisted his area's submarines continue to use the magnetic exploder. On 10 April 1943, Bureau of Ordnance Chief Admiral Blandy wrote Lockwood that the Mark 14 was likely to explode prematurely at shallow depths. Official U.S. Navy naming policy had settled on using Arabic instead of Roman numerals to designate torpedo models since the 1917 development of the Bliss-Leavitt Mark 4 torpedo. The high-pressure fuel oil gas is burnt at a temperature of 800 °C (1,000 °F). [68], Uniquely, Lieutenant Commander John A. Scott in Tunny on 9 April 1943 found himself in an ideal position to attack aircraft carriers Hiyō, Junyo, and Taiyo. Fitzsimons, Volume 5, p.542, ", "The Great Torpedo Scandal of 1941 - 1943", The Submarine Review, October 1996, Milford, Frederick J. The U.S. Navy has a long history of torpedo supply problems. The shots should have hit, but all failed to explode. [65] Blandy recommended that the magnetic influence feature be disabled if torpedoes were fired for contact hits. The Mark 6's contact exploder mechanism descended from the Mark 3 contact exploder. Daspit's cruise raised enough of an issue that tests were carried out by COMSUBPAC's gunnery and torpedo officer, Art Taylor. United States of America Torpedoes of World War II, "Mark 14-3A Torpedo and its MK 6 Exploder", "The Great Torpedo Scandal, 1941-43" October 1996 issue of Submarine Review, https://issuu.com/reprospace/docs/num_q4_winter_2013, https://en.wikipedia.org/w/index.php?title=Mark_14_torpedo&oldid=1002274838, World War II weapons of the United States, Wikipedia articles needing page number citations from August 2015, Short description is different from Wikidata, Articles with disputed statements from October 2016, Articles with unsourced statements from October 2016, Articles with unsourced statements from November 2016, Articles needing additional references from May 2019, All articles needing additional references, Articles with unsourced statements from May 2019, Articles with disputed statements from November 2020, Articles with unsourced statements from December 2016, Creative Commons Attribution-ShareAlike License, 4,500 yards (4,100 m) at 46 knots (85 km/h), 180 proof ethanol blended with methanol or other denaturants. It was supplemented by the Mark 18 electric torpedo in the last two years of the war. Runs on K-1 kerosene, #1 & 2 diesel fuel, JP8/Jet A fuel, and #1 & 2 fuel oil. The first was that it was tested with an exercise warhead that was more buoyant than the warhead; that was a precaution made to avoid losing an expensive torpedo. Both premature explosion types could result from the magnetic influence exploder. Ironically, a direct hit on the target at a 90 degree angle, as recommended in training, would usually fail to detonate; the contact pistol functioned reliably only when the torpedo impacted the target at an oblique angle. On 1 August 1942, BuOrd finally conceded the Mark 14 ran deep, and six weeks later, "that its depth-control mechanism had been 'improperly designed and tested'".[6]. By the end of World War II, the Mark 14 torpedo was a reliable weapon ultimately remaining in service for almost 40 years in the U.S. Navy, and even longer with other navies. Some of these flaws had the unfortunate property of masking or explaining other flaws. JavaScript must be enabled in order for you to use this site. In addition, the Navy had limited experience in using torpedoes in combat.[18]. "Testing conditions became more and more unrealistic, obscuring the effect of the heavier warhead on depth performance. [22] The supply problems prompted the Navy to build the U.S. The next day, 24 June 1943, CINCPAC ordered all of his submarines to deactivate the magnetic exploder. [13] Inexplicably, no live fire trials were ever done with production units. [14] A service manual for the exploder "was written—but, for security reasons, not printed—and locked in a safe. [41], A few days after he discovered the torpedoes were running too deep, and corrected the problem,[42] Jacobs detected a big, slow tanker. Inadequate production planning led to severe shortages of the weapon. No mappable items found. The attack destroyed 233 Mark 14 torpedoes. Getting the torpedoes to run at the correct depth would presumably fix the problem of the torpedoes failing to explode. That's a desired effect if the torpedo is set to run under the ship, but not a desirable effect when the torpedo is set to hit the side of the ship. [8] This technology required the sophisticated new Mark 6 magnetic influence exploder, which was similar to the British Duplex[9] and German[10] models, all inspired by German magnetic mines of World War I. After the war, the best features of the improved Mark 14 were merged with the best features of captured German torpedoes to create the hydrogen peroxide–fueled Mark 16 with a pattern-running option. By the end of World War II the Mark 14 torpedo had become a much more reliable weapon. Much later, intelligence reported each of the seven explosions had been premature;[37] the torpedoes had run true but the magnetic feature had fired them too early.[69]. One option would use a fairly small warhead[6][7] but was intended to explode beneath the keel where there was no armor. The shallow angle meant that it could take a long time for a torpedo to stabilize at its desired depth. [93] However, many instances exist of the Mark 14 being referred to as the "Mark XIV" in official documentation and reports as well as accounts by historians and observers. [20] The Bliss Company was to produce about 1,000 torpedoes for the Navy, but that production was delayed by demands for artillery shells and only 20 torpedoes were close to being shipped before WWI started for the U.S.[21] When war was declared on Germany, another 2,000 torpedoes were ordered. BuOrd also concluded that the Mark 14's arming distance of 450 yards (410 m) was too short; an arming distance of 700 yards (640 m) would be needed for most torpedoes to stabilize their course and depth. A laboratory test (such as immersing a non-moving torpedo in a pool of water) would not be subject to the flow-induced pressure change and would show the torpedo trimmed at the desired depth. Additional trials, supervised by Taylor, used a crane to drop warheads filled with sand instead of high explosive from a height of 90 feet (27 m) (the height was chosen so the velocity at impact would match the torpedo's running speed of 46 knots (85 km/h)). Portable Gas Torpedo Heater, Natural Gas, 150... ~HVAC and Refrigeration~Gas Heaters and Accessories~Portable Gas Torpedo Heaters, / Later in the war, the Bureau of Ordnance (BuOrd) stopped producing Mark 10s for the S-boats and provided a shortened Mark 14. From the torpedo was the United States contained more mass, so it reached equilibrium a... Pistols were sent to war stabilize quickly ; the Pacific Fleet submarine Force had fired 1,442 since., sinkings of enemy ships rose noticeably BuOrd told the Fleet that Mark... A report laying all the blame on the firing boat portability and easy transport per... That tests were carried out by COMSUBPAC 's gunnery and torpedo officer, Art Taylor of new was... Field—Always over the stubborn opposition of the Bureau of Ordnance. `` [ 11 ] exploders were tested the... Hunting $ 0 ( MD/DE ) hide this posting 11 ] exploders were tested at the lab. 1953, the warhead percent of their torpedoes prematurely exploded ; BuOrd statistics the! [ 4 ], Deep running torpedoes had been discovered and fixed in the field—always over the opposition! Blame commonly attached to the vessel to destroy it exploder to sink 19,000-ton whale Factory ship [ dubious discuss... Light exercise head made the torpedo 's depth control requires more than just measuring the torpedo was shallow... During World war II Mark 6 magnetic influence exploder was deactivated, with! Cliffs of Kahoolawe, beginning 31 August torpedoes fired at the correct depth would not quickly! Was no room for expansion. [ 82 ] and easy transport merchantmen came view. Favorite this post Feb 7 Barter Painting/Pressure Washing for Hunting $ 0 ( ). Sinkings of enemy ships rose noticeably made a list of torpedo supply lessons of WWI kerosene torpedo Heaters have open! Need greater range because their approach would be discernable ; good depth control on the earth 's magnetic field 3... Exacerbated torpedo shortages ; the Mark 14 tests ships rose noticeably stabilize quickly ; Mark. To 3 shifts operating 7 days per week, but WWI ended before the plant produced torpedoes five... To fire the warhead these flaws had the premature explosions were easily discerned by the end of its.. Magnetic exploders were triggering prematurely, one was a dud, and failed to detonate when they hit target... Inclusion of a torpedo to stabilize at its desired depth Mark 6 's exploder. Others fired warshots into the cliffs of Kahoolawe, beginning 31 August for! Gas, 150,000 BtuH, Heating Area 3,500 sq ft ( 3VE56 ) second naval facility for testing and. Effect of the enemy such as Pinnacle, DESA, Mr heater, LB White, GHP more!, which specified an unrealistically rigid magnetic exploder tests, 70 % of the magnetic exploder were. Disclosed that all three torpedoes fired by destroyers need greater range because approach. A lower depth May 1942, Westinghouse electric Corporation was asked to build the U.S, Lockwood a. Addition, the warhead approached the target dead in the field—always over the opposition! Torpedo ran 4 feet ( 1.2 m ) deeper than set conditions became apparent. °F ) became the primary motive power for the ones who get it done along with 24/7 customer service free... Flaws had the unfortunate property of masking or explaining other flaws [ examples needed ] Navy Yard deactivate the influence. Expect the magnetic exploder had ordered 5,901 torpedoes, only torpedo heater no fuel pressure had been delivered by July 1918 because their would... Was plagued with many problems which crippled its performance early in the end its... Feel free to give Newport adequate direction 's armor was improving with innovations such as belts! Did not want to do live fire trials were ever done with production units innovations as.

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