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Found 23 results

  1. Tuccy

    Scuttling of Admiral Graf Spee

    Submitted by @Salentine 17 December 1939 - On this in history The Admiral Graf Spee was scuttled in the River Plate estuary to prevent the ship from falling into enemy hands as an aftermath of the Battle of Rio de la Plata.
  2. Tuccy

    Battle of Savo Island

    This night battle, first of the surface engagement in the Solomons chain, was the worst defeat the US Navy suffered in its history. Reacting to the Allied landing on Guadalcanal, Admiral Mikawa put together all available surface forces - seven cruisers and a single destroyer - and led them in first of the raids down the "Slot" from Rabaul to Guadalcanal. Thanks to the superior night trainign and equipment, along with serious tactical and communication errors on the Allied side, the Japanese force managed to utterly surprise and defeat two of the three Allied surface groups, heavily damaging cruisers USS Chicago and HMAS Canberra (had to be scuttled later) of the Southern patrol group and sinking trio of Astoria class heavy cruisers in the Northern group. USS Quincy under fire Due to the time it took to get his ships back in formation and damage suffered by sporadic return fire, he decided not to risk his ships by pressing the attack further and instead retreated to Rabaul, losing the cruiser Kako to submarine torpedo on August 10th just 70 miles short of Rabaul. In total, with air and submarine attacks, the Japanese lost one heavy cruiser against four heavy cruisers and one destroyer being sunlk on the Allied side. Moreover the attack did lead to decision to withdhraw cargo ships from Guadalcanal, leaving the Marines ashore with limited supplies and equipment. After losing three ships of Astoria class including the lead ship in one battle, the class was renamed after the second ship, USS New Orleans. 8th Fleet (VAdm Gunichi Mikawa) Chokai (flagship) - light damage Cruiser Division 6 (RAdm Goto) Aoba (flagship) Furutaka Kako - torpedoed on August 10th Kinugasa Cruiser Division 18 (RAdm Matsuyama) Tenryu (flagship) Yubari Screen Yunagi Task Force 62 (RAdm Turner) Task Group 62.6 - Western Screen (RAdm Crutchley) HMAS Australia (flagship) - part of Southern Group, not present) Radar Pickets USS Blue USS Ralph Talbot - damaged Southern Group HMAS Canberra - damaged, scuttled USS Chicago - damaged USS Bagley USS Patterson - damaged Northern Group USS Vincennes - sunk USS Quincy - sunk USS Astoria - sunlk USS Helm USS Wilson Task Group 62.4 - Eastern Screen (RAdm Scott) USS San Juan HMAS Hobart USS Monssen USS Buchanan Unattached USS Jarvis - damaged by air strike on August 8th, retreating independently to Australia, sunk by air strike on August 9th
  3. Tuccy

    Battle of Vella Gulf

    This battle saw the first independent operation of US Destroyers in the Solomons while trying to interrupt the "Tokio Express" supply runs. Using the lessons from the previous night battles, Cdr. Moosbugger split his force into two divisions, planning to use DesDiv 12 as a hammer and DesDiv 15 as an anvil in a combined gun and torpedo ambush. Thanks to the new SG radars, the American destroyers of DesDiv 12 were able to launch their torpedoes undetected and their salvo hit all four Japanese destroyers, crippling three of them right under the guns of DesDiv 15. The only Japanese destroyer to escape the ambush was Shigure, where torpedo hitting her punched straight through the rudder without detonating. Shigure was able to get away, adding to her commander, Tameichi Hara's, "Unsinkable" reputation. Note: In the Order of Battle, intentionally displaying the detailed Japanese organization - by this stage of war, where US Navy preferred to deploy Destroyer Divisions together, IJN tended to mix and match ships and commanders who did not operate together before. Task Group 31.2 (Cdr. Moosbrugger) Destroyer Division 12 USS Dunlap (flagship) USS Craven USS Maury Destroyer Division 15 USS Lang USS Sterett USS Stack (Cpt. Kaju Sugiura) 3rd Fleet Destroyer Squadron 10 Destroyer Division 4 Hagikaze (Flagship) - sunk Arashi - sunk 2nd Fleet Destroyer Squadron 2 Destroyer Division 24 Kawakaze - sunk Destroyer Division 27 Shigure - damaged
  4. until
    On this day in history in 1945, the Japanese submarine I-58 hit heavy cruiser USS Indianapolis with a torpedo. Ship sunk 12 minutes later and her disappearance was not noticed until a patrol plane chanced to spot the survivors on August 2nd. This failure was caused both by lapses in the coordination between two commands and by a secret nature of the previous journey of the Indianapolis - carrying parts of the first nuclear bombs to the Mariana islands. This was the last large ship being lost during the World War II. Note: Time of the event is set to the actual time of attack, July 30 at 00:15 local time. I-58 USS Indianapolis, July 10th, 1945
  5. The German command realised that their U-boot fleet forces are to week to severely disrupt British maritime transport, on the other hand, it was clear that in short time the production of submarines cannot be increased, so it was crucial for Germany to find another tool to make it so. Germans were rapidly working on finding new weapons, and that began even before the start of the war - the intention was to surprise an opponent who would be unprepared to fight that weapon. - moored magnetic mine - laid by submarine The idea was not new and has been known from the 1918th, yet in 1930th a group of experts started working on this problem. The Kiel Institute for maritime barrage worked in complete secrecy, and under the command of maritime engineer Karl Kruger and famous physics prof. Adolf Bestelmeyer (who created the heart of the mine - magnetic exploder) the mine was finished. Bottom laying mine - known as the Schildköte - turtle mine This type of mines can only be used in shallow waters - the depth can't be over 40 m, and it suited German needs because waters around England are shallow - mostly about 20 m. Finally, on the 8th November 1939 minelaying began - mines were laid around Dover isthmus (neck). Everything was mysterious - German twin engine planes were casting mines at low altitude - it looked like they were scouting, and Kriegsmarine's destroyers, under the cover of darkness, were laying mines near the coast. Mines were laid from Scapa Flow to Dung eness. http://www.cyber-her...aways/germ1.jpg In the first days 1 Italian, 1 French and 4 British merchant ships were sunk. Right by the shore, in front of coastal batteries, several navy ships were sunk- destroyer Gipsy and patrol boat Mastiff ( 21th november 1939) and new cruiser Belfast was severely damaged - along with two old destroyers and 1 big minelayer. In the short time 33 ships were sunk ( total 82000 t ) HMS Gipsy - half submerged - sunk by mine This continued until Brits found one mine, dropped by German planes, in the shallow near the Shoeburyness - lieutenant commander bravely disarmed the mine and the secret was revealed. Now it was possible to create effective defense against magnetic mines - minesweepers were equipped with strong MF devices, dragging them behind, and safely destroying mines. Merchant and navy ships were degaussed by wrapping cables around ship's hull. Later, Germans created mines with combined exploders - acoustic, magnetic and water pressure, making mines resistant to minesweepers, but those didnt have big influence on the course of war.
  6. telxinos

    Fatal wrecks in Greece WWI and WWII

    We play a game and have fun but it was not fun at all buring those days many people lost theyr life and very often forgoten From my point of view make no difference warships or merchants ships history own to this people Some of those wrecks happen to bee in Greece so im going to present those as a tribute to this people SS ORGIA WWII 4000 ITALIAN POWS LOST http://www.ww2wrecks.com/portfolio/oria-shipwreck-the-watery-grave-of-4000-pows-in-1944/ https://en.wikipedia.org/wiki/SS_Oria_(1920) HMS Perseus (N36) WW II 61 lost 1 survived https://en.wikipedia.org/wiki/HMS_Perseus_(N36) http://www.bbc.com/news/magazine-15959067 HMHS Britannic WWI 30 lost 1035 survived https://en.wikipedia.org/wiki/HMHS_Britannic
  7. Tuccy

    Sinking of PT-109

    On August 1st, 1943, a strong force of PT boats was dispatched to the Blackett Strait to try and ambush Japanese destroyers bringing supplies to Kolombangara. After unsuccessful attack, only three boats were left on patrol. At 2 at night, August 2nd, one of them, a PT-109, suddenly found itself in the path of destroyer Amagiri. Amagiri rammed and sunk her, leaving 11 survivors in the water. The survivors swam to the nearby islands. Six days later, native scouts found them and, having delivered the boat's commander to an Australian coastwatcher (screatched in the coconut shell), a rescue operation was mounted. Who was the commander of PT-109? None other than the son of former ambassador to the United Kingdom and a future president of the United States, John Fitzgerald Kennedy.
  8. Tuccy

    Battle of Sagami Bay

    On this day in history the last surface action of World War II took place off the tip of the Bōsō Peninsula. Destroyer Squadron 61 of the US Navy intercepted a Japanese coastal convoy of two freighters, escorted by one minesweeper and one submarine chaser. One of the freighters was sunk and the other damaged. Destroyer Squadron 61 Destroyer Division 121 USS De Haven (DD 727) - flagship USS Mansfield (DD 728) USS Lyman K. Swenson (DD 729) USS Collett (DD 730) USS Maddox (DD 731) Destroyer Division 122 USS Blue (DD 744) USS Brush (DD 745) USS Taussig (DD 746) USS Samuel N. Moore (DD 747) USS De Haven (DD 727), flagship of DesRon 61, on May 14th, 1944.
  9. Tuccy

    First Bombardment of Kamaishi

    On this day in history in 1945 the series of bombardment and air raids against Japanese coastal targets started. In the first of the series of bombardments, battleships South Dakota, Indiana and Massachusetts, heavy cruisers Quincy II and Chicago II and nine destroyers shelled iron works at Kamaishi (Northern Honshu) while carrier aircraft attacked shipping around Hokkaido and Honshu. This bombardment started a series of other attacks spanning the end of July and beginning of August: July 14th: Iron Works at Kamaichi (USS South Dakota, Indiana, Massachusetts, two cruisers, nine destroyers) July 15th: Iron works at Muroran (USS Iowa, Missouri, Wisconsin, two cruisers, eight destroyers) July 17/18th: Various targets around Hitachi (USS Iowa, Missouri, Wisconsin, North Carolina, Alabama, HMS King George V, two cruisers, eight American and two British destroyers) July 18th: Cape Nojima radar station (cruisers USS Astoria II, Pasadena, Springfield, Wilkes-Barre, six destroyers) - no damage July 24/25th: Seaplane base at Kushimoto and airfield near Cape Shionomisaki (same ships, little damage) July 29th: Various targets around Hamamatsu (USS South Dakota, Indiana, Massachusett, two cruisers, nine destroyers for USN; HMS King George V, three destroyers for the Royal Navy) July 30th/31st: Shimizu aluminum plant (Destroyer Squadron 25) August 9th - 10th: Second bombardment of Kamaishi (USS South Dakota, Indiana, Massachusett, four cruisers, nine destroyers for USN, one cruiser and three destroyers for Royal Navy, one cruiser for New Zealand) USS Indiana shelling Kamaishi, July 14th 1945.
  10. Tuccy

    Battle of Cape Spada

    Submitted by @Salentine On this day in 1940 two Italian cruisers transferring to Leros were intercepted by an Allied patrol off Crete. Initially encountering just enemy destroyers, the two cruisers gave chase until running into HMAS Sydney. After a 50-minute running battle Bartolomeo Colleoni suffered damage to her boilers and despite fierce resistance even after main guns were disabled, she was sunk by torpedoes. Bande Nere managed to escape to Benghazi, escaping pursuit by HMS Warspite. 2nd Cruiser Division (RAdm Ferdinando Casardi) Bartolomeo Colleoni - sunk Giovanni delle Bande Nere - damaged 2nd Destroyer flotilla (Capt. John Collins) HMAS Sydney HMS Hasty HMS Havock HMS Hero HMS Hyperion HMS Ilex
  11. Submitted by @Salentine 9 July 1940 - On this in history The Battle of Calabria took place it was one of the first large battles between the Italian Royal Navy (16 DD's, 6 CA's, 8 CL's and 2 BB's including the Guilio Cesare) and the British Royal Navy (16 DD's, 5 CA's, 1 CV and 3 BB's including the Warspite) both forces were escorting vital convoys, the Italians to north Africa and the British to Malta, both sides exchanged fire and retreated. The Italians suffered damage to 1 battleship, 1 heavy cruiser and 1 destroyer and the British suffered damage to 1 light cruiser and 2 destroyers. The Warspite hit the Giulio Cesare at well over 24,000 metres (26,000 yd), which at the time was one of the longest-range naval artillery hits in history.
  12. until
    On this day in history, in the evening hours, a fatal order was given to scatter the arctic convoy PQ 17. While the feared sortie of battleship Tirpitz did not happen, submarines and aircrafts sunk 24 of 35 convoy ships. Three merchant ships were protected thanks to quick thinking of commander of one of smaller escort ships:
  13. The French battleship Richelieu was noted for her unusual forecastle armament consisting of a pair of large quadruple turrets. In 1935, the keel was laid down for what would become the newest and largest battleship-class ever to be constructed by France. The class was named "Richelieu" after a French clergyman, nobleman and statesman of the 17th Century. Richelieu became the lead ship of the class and was followed by the Jean Bart. Two others - though never completed - were to be known as the Clemenceau and the Gascogne. By 1932, French authorities understood that they would have to work to counter the strongest threat to Mediterranean Sea operations - the Italian Navy, now under the power of strongman dictator Benito Mussolini. The Richelieu battleship class was part of the French answer to the threat and served - more or less - as the figurative "shot over the bow" against the Italian Navy in the region. http://www.freetimeh...trp/TRP5750.jpg Up to this point, French ship designers and builders maintained a respected tradition of producing top-of-the-line warships for over two centuries. The Richelieu was a design built for speed with good armor protection and sound technology to better the ships of the Italian Navy and even make the Germans take notice. However, as a signer of the Washington Naval Treaty following World War 1, France was required to build her new ships within certain predetermined and agreed upon limits. As such, the battleship resided within a tonnage restriction though her choice of main guns were of 15" (380mm) caliber - then the largest and heaviest available when the vessel was designed in 1932. The one design feature that could be seen as "questionable" for its time was that all of the 15" guns were mounted forward within two large traversing turrets, each turret fitting four guns. This design choice was made to reduce the total armor tonnage across just two large turrets - as opposed to a typical design setup containing three or four turrets. To reduce the possible damage to the quad turret arrangement from a single direct hit, an armored divider was built between the right and left gun pairings. The four guns did not operate individually as on other contemporary vessels but as pairs so, if struck and put out of action, only half of the 15" inch gun armament on either turret would be immobilized. The French Navy felt the Richelieu would be firing all 15" guns while approaching enemy shipping, this in effect presenting the smallest silhouette possible, allowing the Richelieu full use of all of her powerful armament available. Secondary armament came in the form of standard 6" guns. All nine gun emplacements were mounted aft in the design across 3x3 traversable turrets. The French battle plan concept concerning their new battleship countered the classic naval "Crossing the T" strategy in which ships fought to position themselves to fire a full broadside against oncoming enemy ships. If approaching the enemy, technically only any forward-facing guns within range could be called upon to fire. For typical battleships of this time, that meant that only half of the available heavy armament could be called to bear. However, had also shown its fair share of "running" battles in which capital ships needed to fire substantial armament against pursuing enemy ships as well. As such, the Richelieu design would, essentially, have a "big gun" disadvantage - able to only muster her 6" spread against an enemy's own large-caliber weapons. Like other contemporary capital ships of the time, the Richelieu was equipped with an aircraft deck with and integrated aircraft hangar structure. This allowed the carrying of several floatplane aircraft for reconnaissance use and artillery spotting sorties. Aircraft were launched by way of two catapults and could send aloft up to four seaplanes from the Richelieu's stern section. The Richelieu had not still not been commissioned but was however deemed seaworthy for additional trials by mid-April of 1940. World War 2 was underway, paved by multiple German conquests across Poland, Holland and Belgium and the Germans officially invaded neighboring France on May 10th, 1940 - a concerted effort being made to press the army hard towards the French coast to counter the French Navy response. Richelieu was at sea undergoing gunnery practice and speed trials from May to the middle of June when she returned to the western port city of Brest for needed repairs, scheduled crew changes and to take on more journey stores. As the German Army advanced, the French Government became very concerned that their prized battleship would be captured in port so, on June 18th, the decision was made to send some of the French fleet (including the Richelieu) from the home port at Brest and make for the French province port at Dakar, West Africa. Richelieu had to leave most of her expected stores behind, some still sitting on the awaiting docks. She also left with only 250 x 15" shells aboard and, worse, with only 48 powder bag charges for her 15" main battery; In short, she was not ready for a fight. Richelieu arrived at Dakar on June 23rd, the day after France capitulated. French authorities were force to sign the surrender with Germany and, to even the bitterness left from the armistice ending World War 1 decades prior, Adolph Hitler demanded the same passenger rail car the Germans signed their surrender to the Triple Entente be used.
  14. Tuccy

    Attack on the Convoy Faith

    In a relatively rare event, a fast troopship convoy was intercepted in the Atlantic by long range FW-200 bombers and both troopships were sunk. Subsequent attack on the next day damaged the last surviving ship of the convoy transporting survivors to Casablanca, but the attacking planes were chased away eventually in an unusual aerial duel by Catalina patrol planes. While loss of life was not as serious as it could have been, the sinking of troopships caused a significant delay in building and deployment of a West African division to Burma.
  15. Tuccy

    Attack on Yokosuka

    On this day in history in 1945, Allied naval aviation attacked Yokosuka. While the attack caused considerable damage, the main prize - the battleship Nagato - survived.
  16. Tuccy

    Second Bombardment of Kamaishi

    the last of the bombardments of Japan was truly international, with the American ships being joined not only by British, but also New Zealand warships. The target were again iron works around Kamaishi and the damage caused was more serious than i the first bombardment. Another attack was planned for August 13th, but it was cancelled both due to technical trouble of HMS King George V and the dropping of nuclear bombs. No further bombardment took place until the end of the war. US Navy: USS South Dakota USS Indiana USS Massachusetts USS Quincy II USS Chicago II USS Boston USS Saint Paul nine destroyers Royal Navy: HMS Newfoundland three destroyers (HMS Terpsichore, Termagant, Tenacious) Royal New Zealand Navy: HMNZS Gambia
  17. Tuccy

    Battle for Saipan Ends

    Submitted by @whiskey_sk On this day in history in 1944 the island of Saipan was proclaimed secured by the US forces commander, Admiral Turner. Despite that, scattered groups of Japanese soldiers were still in hiding, including the last organized fighting unit of the Japanese army under Cpt. Sakae Ōba (he surrendered on December 1st, 1945). Cpt. Oba
  18. Tuccy

    Battle of Kolobangara

    Submitted by @Jellicoe1916 In another pitched battle in the Kula Gulf, another edition of "Tokio Express" - 4 transport destroyers escorted by 5 destroyers and a light cruiser - was intercepted by Allied light cruisers. Same as in the previous battle, however, the Japanese ships were shown to be a dangerous opponent. While outnumbered, outgunned and losing the light cruiser Jintsu, their torpedoes found the nmark, heavily damaging all three cruisers and sinking destroyer USS Gwin - while at the same time providing enough distraction for the transport group to land the 1,200 men at Vila. USS St. Louis and HMNZS Leander firing. Japan: Covering Force (RAdm Shunji Izaki) Jintsu (flagship) - sunk Kiyonami Yugure Yukikaze Hamakaze Mikazuki Transport Force (1,200 soldiers for Vila) Satsuki Minazuki Matsukaze Yunagi Allies: Task Force 36.1 (RAdm Ainsworth) Cruiser Division 9 USS Honolulu (CL-48, flagship) - damaged USS St. Louis (CL-49) - damaged HMNZS Leander - damaged Destroyer Squadron 21 USS Nicholas (DD-449) USS O'Bannon (DD-450) USS Taylor (DD-468) USS Jenkins (DD-447) USS Radford (DD-446) Destroyer Squadron 12 USS Ralph Talbot (DD-390) USS Buchanan (DD-484) USS Maury (DD-401) USS Woodworth (DD-460) USS Gwin (DD-433) - sunk
  19. Tuccy

    Battle of Kula Gulf

    As the Allies advanced through the Solomons island chain, a pattern evolved - US troops landed on a new island, Japanese destroyers - the infamous "Tokyo Express" - were redirected to new port to ship supplies and reinforcements. Exactly this happened on the night of 6 July, 1943, when a group of American cruisers and destroyers intercepted a convoy of 10 destroyers. The confused night battle did see sinking of two Japanese destroyers, while USS Helena fell victim to torpedoes after she expended all her flashless powder supplies and in turn was the most visible. USS Helena and USS St. Louis in action. Cover Force (Radm Akiyama Terou) Niizuki (Flagship) - sunk Suzukaze - damaged Tanikaze 1st Transport Group Mochizuki - damaged Mikazuki Hamakaze 2nd Transport Group Nagatsuki - damaged, beached, later destroyed by air raid Satsuki Amagiri - damaged Hatsuyuki - damaged Task Group 36.1 (RAdm Ainsworth) Cruiser Division 9 USS Honolulu (CL-48) (Flagship) USS St. Louis (CL-49) USS Helena (CL-50) - sunk Destroyer Squadron 21 USS Nicholas (DD-449) USS Radford (DD-446) USS O'Bannon (DD-450) USS Jenkins (DD-447)
  20. Tuccy

    Action of 5 July

    On this day in history in 1942, submarine USS Growler managed to find three Japanese destroyers at anchor off the recently occupied island of Kiska. Firing one of the most devastating torpedo spreads in the submarine warfare history, her six torpedoes resulted in at least three hits, one on each of the destroyers. The Asashio class Arare exploded and sunk, remaining two destroyers managed to get back home with serious damage. USS Growler Shiranui (Kagero class) - damaged Arare (Asashio class) - sunk Kasumi (Asashio class) - damaged
  21. Tuccy

    Operation Catapult

    On this day in history, in 1940, after the French commanders refused the ultimatum posed to them by the Royal Navy, British warships opened fire on French fleet anchored in Mers-el-Kébir. As the French crews did not expect an attack, the results were devastating, with only the battleship Strasbourg (Dunkerque's sister) managing to escape to safety. The battleship Bretagne exploded and sunk after her ammunition was hit and her sister, Provence, sank as well, even though she was later refloated. Subsequent air attacks augmented the damage done to battleship Dunkerque and lead to retaliatory bombing raids against the Gibraltar. Battleship Strasbourg leaving the anchorage under fire.
  22. Tuccy

    Battle of the Espero Convoy

    First surface engagement between the Italian and Allied units in WWII - a small convoy of Italian destroyers carrying antitank units to Africa was intercepted by the 7th Cruiser Squadron. Order of battle: 7th Cruiser Squadron (VAdm John Tovey) 1st Cruiser Division HMS Orion (flagship) HMS Neptune HMAS Sydney HMS Gloucester 2nd Cruiser Division HMS Manchester HMS Gloucester 2nd Destroyer Squadron (Capitano di Fregata Enrico Baroni) Espero (flagship) - Sunk Ostro Zeffiro Result: Allied victory - Espero sunk On the flip side, remaining destroyers escaped and ammunition consumption halted cruiser squadron activities for some time, leading to delays in convoys to Malta.
  23. TopliCar

    WW II torpedoes

    Hi guys, in this topic i will try to compare 3 most commonly used torpedoes of WW II, in which i am interested especially because worlds first functional torpedo was created by Ivan Lupis in my town - Rijeka US Navy - Mark 14 torpedo Weight 1,490 kg Length 6.25 m Diameter 530 mm Warhead 292 kg Effective range 4,100 m at 46 knots 8,200 m at 31 knots similar to german G7e torpedoes Mark 14 torpedoes had some serious problems - many reports showed exploder failures ( premature explosions later corrected with new exploder model ), depth problems - running too deep, dud shots, and circular runs - submarine Tullibee was sunk by its own torpedo Imperial Japanesee Navy - Type 93 torpedo ( aka. Long Lance ) Weight 2800 kg Length 9 m Diameter 610 mm Warhead 490 kg Effective range 22,000 m at 48–50 knots In my opinion the best torpedoes of WW II - they were superior in firepower and range - speed thanks to the use of pure oxygen as fuel oxydizer for torpedo's propulsion ( vs. compressed air in Mark 14 and Acid-lead batteries in G7e ) also used as a platform for developing infamous japanese suicide torpedo Kaiten Kriegsmarine - G7e torpedo Weight 1528 kg Length 7.16 m Diameter 533 mm Warhead 280 kg Effective range 6,000 m at 4 4 kn 8,000 m at 40 kn 14,000 m at 30 kn several modifications were used - G7e/T2, G7e/T3 and G7e/T4 Falke G7e/T3 was based on previous model T2, but greatly improved, removing problems with premature explosions caused by faulty magnetic detonators and depth control G7e/T4 Falke was world's first acoustic homing torpedo - later replaced by the G7es/T5 Zaunkönig G7es/T5 Zaunkönig - had even better detection equipment than Falke with better sensitivity and easier locating the propeller sounds - allies later developed anti GNAT (as the allies called the torpedo) devices dragged after an escort vessel making a loud noise to attract possible homing torpedoes in the area :honoring: