Naval Historywith Dr. Alex

Topic

Sonar

Related time notes

  1. The FFX program... What the Legend class are...
    10:51Light-frigate duties, convoy support and sensor optionsNotable Point
  2. Kaibōkan: The Imperial Japanese Navy Corvettes of WWII
    14:34Etorofu's simpler structure and longer rangeChapter
  3. Kaibōkan: The Imperial Japanese Navy Corvettes of WWII
    27:48Mikura's gun layout and larger anti-submarine loadChapter
  4. Kaibōkan: The Imperial Japanese Navy Corvettes of WWII
    32:00Ukuru and the difference between reserved space and fitted weaponsNotable Point
  5. Kaibōkan: The Imperial Japanese Navy Corvettes of WWII
    46:19Type C's basic convoy escort specificationChapter
  6. Kaibōkan: The Imperial Japanese Navy Corvettes of WWII
    50:51Why depth-charge attacks needed several shipsChapter
  7. Kaibōkan: The Imperial Japanese Navy Corvettes of WWII
    1:03:13Armed trawlers as useful additions to an escort groupNotable Point
  8. The Big Frigate Discussion: ASWFs, F110s & Pohjanmaas vs Gowind, European Patrol Corvette & FF(X)
    46:13Pohjanmaa systems and ice capability suit Finland's environmentNotable Point
  9. Bruships 260: Naval History Questions Answered Live
    1:58:24Sonar 2087 and CAPTAS-4Notable Point
  10. What the unbuilt destroyers of the Regia Marina tell us about WWII?
    27:21Later-series firepower and sensorsChapter
  11. What the unbuilt destroyers of the Regia Marina tell us about WWII?
    33:03Gunpower versus anti-submarine capacityChapter
  12. What the unbuilt destroyers of the Regia Marina tell us about WWII?
    37:18Judging first-generation radar on its own termsNotable Point
  13. Bruships 256: Naval History Questions Answered Live
    2:31:27Why anti-submarine forces still mistake whales for targetsQ&A
  14. Nazi Destroyers of WWII: Failing to Learn, Failing to Build, Failing to Deliver...
    12:04Type 1936B: a better destroyer that arrived in too few numbersChapter
  15. Resurgent Japan, the "Destroyer Navy" of the 21st Century
    58:57Asahi pairs quiet electric cruising with a balanced ASW fitChapter
  16. Bruships 247: Science Fiction & Naval History Questions Answered Live...
    2:38:46Why the sabotage counterfactual selects British ASDICQ&A
  17. The Defence Investment Plan: A Live Review if it's been published, A Chat of What to Look For if not
    2:21:04University partnerships for drones and sonarQ&A
  18. How Ship Design is a reflection of Navy's attempts to balance technology, strategy and memory...
    0:52Why British cruisers carried ASDICNotable Point
  19. Bruships 237: Modern Navy & Naval History Questions Answered Live...
    2:37:35Why a helicopter hangar was not the decisive ASW gapQ&A
  20. Bruships 234: Naval History Questions Answered Live...
    1:30:00Why very noisy uncrewed submarines make weak decoysQ&A
  21. Bruships 232: Naval History Questions Answered Live...
    1:30:19How to refine the Yugumo-class destroyerQ&A
  22. The rise and fall of Constellation class Frigate program? (Patreon Live)
    54:42Why the sonar priority mattered for an ASW frigateNotable Point
  23. The rise and fall of Constellation class Frigate program? (Patreon Live)
    1:32:24Constellation's bow, propeller, and generator changesNotable Point
  24. Trials and Tribulations- why ships go through the testing they do before they enter service
    2:25:17Crewed helicopters could lead uncrewed ASW hunting packsNotable Point
  25. Bruships 226: Naval History Questions Answered Live...
    3:17:54What 3D shipwreck scans can proveQ&A
  26. Why is a Frigate a Frigate and other questions of modern navys?
    45:49Modern frigate and destroyer labels signal system priorityChapter
  27. The World Naval Review 2026: A Great Key Book Series
    23:01ASROC turns sonar range into a firing solutionNotable Point
  28. 3 Books to understand the USN, RN & IJN preperations for WWII! Key Books 3
    1:01:52Exercise 77 biases the lesson on submarine attackChapter
  29. 36hrs Live Historiophon 2025: P9 of 9 - A Movie Star in the Making: HMS Portchester Castle
    3:06:00Why faster sound in water would not transform naval warfareQ&A
  30. 36hrs Live Historiophon 2025: P9 of 9 - A Movie Star in the Making: HMS Portchester Castle
    5:09:38Castle-class corvette design and anti-submarine fitChapter
  31. 36hrs Live Historiophon 2025: P8 of 9 - UAD chat requested design testing…
    6:59:02Why the Cold War US Navy built unusual one-off SSNsQ&A
  32. 36hrs Live Historiophon 2025: P6 of 9 - The Royal Navy’s Submarine Killers – Black Swans at War
    8:05:17How ASDIC reshaped anti-submarine shipsChapter
  33. 36hrs Live Historiophon 2025: P6 of 9 - The Royal Navy’s Submarine Killers – Black Swans at War
    8:10:20Powerful sonar and the limits of a close-range claimQ&A
  34. 36hrs Live Historiophon 2025: P6 of 9 - The Royal Navy’s Submarine Killers – Black Swans at War
    8:51:45Bubble decoys instead of whale callsQ&A
  35. Historiophon 2025: part 2 of 9 - Friends of HMCS Haida
    9:16:45How USS Nautilus changed the anti-submarine problemQ&A
  36. What would the World's Major Navys look like in 1950 if WWII didn't happen? (Live)
    2:01:20Routine sonar use creates an anti-submarine countermeasure raceNotable Point
  37. Jimmy Carter: The Only Submariner President... so far...
    22:16USS K-1 (SSK-1), later Barracuda, and hunter-killer developmentChapter
  38. Bruships 208: What if Naval History Questions Answered Live...
    4:52:28Why early nuclear submarines were strategic before they were tactically superiorQ&A
  39. Bruships 201: Naval History Questions Answered Live...
    2:33:06Which Leander systems could wartime Britain reproduce?Notable Point
  40. Scuttlebutt 11: from SDSR to Pearl Harbor, with a stop at CVA-01 along the way...
    2:41Why a quoted sonar range can misleadNotable Point
  41. Bruships 193: Naval History Questions Answered Live...
    3:44:42Why drones may not merge frigates and destroyersQ&A
  42. Bruships 193: Naval History Questions Answered Live...
    3:58:37Processing sonar data aboard an uncrewed sensor craftNotable Point
  43. Bruships 193: Naval History Questions Answered Live...
    3:59:41Why airborne and shipborne ASW work togetherQ&A
  44. Bruships 176: Christyear or Newmas?
    1:22:05Why more interwar ASDIC money alone was not enoughQ&A
  45. Hunting Submarines from WWI to Present Day; How Aircraft, Ships & Submarines Work Together?
    34:23Acoustic profiles turn ocean noise into contactsNotable Point
  46. Bruships 174: Ten Days to Christmas... have I got the lights up yet?
    3:09:30Why Arctic anti-submarine surveillance still depends on submarinesQ&A
  47. Anti Submarine Warfare, a primer history & overview
    59:24Acoustic signatures in a noisy oceanChapter
  48. Anti Submarine Warfare, a primer history & overview
    2:24:13Who invented ASDIC?Q&A
  49. Essay Competion, UAD ship design & Questions: Third 9 of the 36hr Historiophon Part 3/4
    7:00:27British submarine priorities and the missed value of snorkelsNotable Point
  50. Questions, Flower Class & the Essay Competition: First 9 of the 36hr Historiophon Part 1/4
    6:06:26Uncrewed escorts can make active sensors tactically expendableNotable Point
  51. Bruships 169: Kalax o Kalax, my kingdom for a Kalax...
    2:35:37Why better sensors will not make the oceans transparentQ&A
  52. Bruships 167: Tell me why, everything turned book – packing up, stacking up is all kalax want to do.
    2:40:08How NATO standardization reshaped naval terminologyQ&A
  53. Bruships 166: As I walk through the library of Naval History, I take a look at my shelf space....
    3:59:46Should Coast Guard cutters carry sonar?Q&A
  54. Bruships 163: I need a Kalax Kalax, a Kalax is what I need! Naval History Questions & Chat
    3:18:31GUPPY submarines arrive twenty years earlyQ&A
  55. Bruships 160: Money for Kallax, Book Space ain’t Free! Naval History Questions & Chat...
    45:06Kamov's coaxial rotors and naval ASW workQ&A
  56. Check Campaign 24: UAD has updated & to Learn it's new ways I started another British Campaign
    2:12:01The First World War origins of towed sonarNotable Point
  57. Bruships 155: Last time answering naval history questions from the Brushack?
    3:56:44Sea Vixen ejection and underwater search limitsQ&A
  58. Bruships 155: Last time answering naval history questions from the Brushack?
    4:09:48Hedgehog available at the start of the warQ&A
  59. Bruships 152: Patreon July Premiers Announcement, Special Guests & Naval History Questions Answered
    30:11Why warship sonar can miss wreckage on the seabedQ&A
  60. Check Campaign 17: UAD has updated & to Learn it's new ways I started another British Campaign
    2:47:17A 3,000-ton ASW destroyer runs out of weightNotable Point
  61. Check Campaign 14: UAD has updated & to Learn it's new ways I started another British Campaign
    1:46:14Torpedo damage, maneuver, and warning timeNotable Point
  62. Bruships 146: Naval History Questions, Boxes Getting Packed & Lego Getting Built
    3:36:47Why underwater topography limits submarine speedQ&A
  63. Bruships 135: Japan again... Can I get through 12 books this time
    15:01The thermocline offered submarines only a temporary acoustic refugeQ&A
  64. Conception of Admiral Moffett’s Flight Deck Cruisers & the IJN’s construction of Ryūjō
    31:12A more viable forward aviation shipNotable Point
  65. Bruships 131: Battleships...
    1:34:54Naval warfare without sonarQ&A
  66. A Ultimate Admiral Dreadnoughts Campaign: Building a Battle Cruiser Navy... part 7
    2:28:40Detection, speed, and two torpedo-evasion turnsNotable Point
  67. Mistakes & Missed Opportunities of the Washington Naval Treaties
    26:58Why Italian escort sonar did not scaleNotable Point
  68. Patreon 82: WNT Nations during 1920s/30s, what was their biggest mistake & missed opportunity?
    36:22Would more submarines force greater ASW spending?Q&A
  69. Patreon 82: WNT Nations during 1920s/30s, what was their biggest mistake & missed opportunity?
    1:02:47Italy's sonar was effective but not producible at scaleNotable Point
  70. Patreon 82: WNT Nations during 1920s/30s, what was their biggest mistake & missed opportunity?
    2:29:22Would more American cruisers have exposed torpedo defects?Q&A
  71. How Many Guns Does that USN Battleship have?
    1:33:12Torpedoes make closing range dangerousNotable Point
  72. How Many Guns Does that USN Battleship have?
    1:38:33Trading torpedoes for cruiser survivabilityNotable Point
  73. Bruships 120: One Book & One Book only... Battleships & Battle Cruisers 1905-70 by Seigfried Breyer
    3:29:34Why anti-submarine ships need manoeuvrabilityQ&A
  74. A Ultimate Admiral Dreadnoughts Campaign: Building a Battle Cruiser Navy... part 2
    2:18:17Survivability equipment in a 30-knot capital shipNotable Point
  75. Bruships 115: Hopefully Australia Trip in Summary!
    2:16:26Dipping sonar evolved from earlier experimentsQ&A
  76. Western Approaches Tactical Unit(WATU)
    39:20Pineapple and Banana separate pack from single-boat attacksChapter
  77. Western Approaches Tactical Unit(WATU)
    46:26The Beta search shapes a U-boat's escapeNotable Point
  78. Western Approaches Tactical Unit(WATU)
    52:30Evading acoustic torpedoes below 24 knotsNotable Point
  79. Stalins Dream Fleets & the Potential Responses
    31:49Homing-torpedo countermeasures as a warning about wonder weaponsNotable Point
  80. Stalingrad Class Battlecruiser: Key Ships Series 2, Ship 7
    17:27Stalingrad's layered weapons and electronic suiteNotable Point
  81. Building a NelRod County Class...
    17:54Building a Zara-style opponent with 1930s sensorsNotable Point
  82. Bruships 106: Song Dynasty & Three New Books from Pen & Sword
    2:58:53Variable-depth sonar reaches beneath masking thermal layersQ&A
  83. The Submarine Century? How Submarines evolved over the 20th Century
    0:08Why submarines change naval warfare into a three-dimensional contestChapter
  84. The Submarine Century? How Submarines evolved over the 20th Century
    54:30Convoys, ASDIC, and the real objective of anti-submarine warfareNotable Point
  85. Turret Selection: What in What Distribution Makes Sense for you
    18:59The systems needed to make a huge battery usefulNotable Point
  86. Christmas Videos Comment Response: Comus Class, Kynda Class & Kresta Class
    50:40Soviet ASW mixed old and new detection methodsNotable Point
  87. Kresta Class Cruisers Iterative Development of the Soviet Style
    23:54Stern volume arrives before a towed arrayNotable Point
  88. Bruships 86: Science Fiction Strikes Some More
    3:03:46A helicopter cruiser should coordinate ASW from the rearNotable Point
  89. Escort Carriers, the idea, designs, development and some notable operations
    23:19Escort carriers anchor the Royal Navy's late-war ASW systemChapter
  90. Patreon 57: Modern frigates, cruisers by another name?
    9:02What a towed-array sonar requiresQ&A
  91. Questions & Answers on Naval History till the Bru Runs Out Take 2
    49:23How to inspect damage beneath Bismarck's wreckQ&A
  92. Royal Navy Survey Ships: A History - Patreon 55 (Long Patrol)
    14:44From lead lines to multibeam sonarChapter
  93. Royal Navy Survey Ships: A History - Patreon 55 (Long Patrol)
    50:13Beagle and the importance of survey data processingNotable Point
  94. Royal Navy Survey Ships: A History - Patreon 55 (Long Patrol)
    1:01:47HMS Scott as a high-end ocean survey platformChapter
  95. Royal Navy Survey Ships: A History - Patreon 55 (Long Patrol)
    1:08:23Uncrewed survey craft cannot solve a numbers shortage aloneNotable Point
  96. Patreon 55: History of Survey Ships in the Royal Navy
    27:35From lead lines to multibeam sonarChapter
  97. Patreon 55: History of Survey Ships in the Royal Navy
    1:41:10Why attack submarines do not freely survey beneath Arctic iceQ&A
  98. Patreon 50: 1939 Destroyer Doctrine of the combatant navies & Where did it come from?
    3:16:56How prepared were U.S. destroyers for U-boats?Q&A
  99. ASW and Submarine Warfare in the Inter-War Royal Navy: 1920s & 1930s (Long Patrol)
    20:12How ASDIC found a submerged submarineChapter
  100. ASW and Submarine Warfare in the Inter-War Royal Navy: 1920s & 1930s (Long Patrol)
    21:47Why ASDIC struggled at high speed and in heavy weatherNotable Point
  101. ASW and Submarine Warfare in the Inter-War Royal Navy: 1920s & 1930s (Long Patrol)
    22:19ASDIC was an evolving family of interwar systemsNotable Point
  102. Patreon 41: RN Strategic & Tactical thinking on submarines & anti-submarine forces between the Wars
    52:31Active ASDIC displaced passive listening during the 1920sQ&A
  103. Patreon 41: RN Strategic & Tactical thinking on submarines & anti-submarine forces between the Wars
    1:17:30ASDIC found range and bearing, not certaintyChapter
  104. Patreon 41: RN Strategic & Tactical thinking on submarines & anti-submarine forces between the Wars
    1:39:19How an escort's own weapons could damage ASDICQ&A
  105. Patreon 41: RN Strategic & Tactical thinking on submarines & anti-submarine forces between the Wars
    1:51:30Modern ASW links ship, helicopter, and submarine sensorsQ&A
  106. Bruships: A Special - Questions/What ifs till the Bru runs out? (7)
    3:24:34Drones as sonar probes and electronic decoysQ&A
  107. Bruships 56: "Walking Softly & Carrying a Big Stick" - Admirals, Diplomacy & Detterence
    5:10:18Why ships are louder close inshoreQ&A
  108. Bruships 55: New Books
    3:30:32Following British Cold War submarine designNotable Point
  109. Bruships: A Special - Questions/What If's till the Bru runs out? (3)
    2:29:04Why Constellation needs hull-mounted sonarQ&A
  110. Bruships: A Special - Questions/What If's till the Bru runs out? (3)
    2:55:13Finding a naval wreck in deep waterQ&A
  111. Patreon 22: If the Cold War went hot in 1986 would NATO's navies keep the Altantic Going?
    1:56:20Thermal layers complicate ASW but do not make submarines invisibleChapter
  112. Bruships 41: A History of Armour & Amphibious Warfare (Kyle Hardman)
    4:27:51Could an escort's sonar sit well aft of the bow?Q&A
  113. Paddle Ships at War
    2:38:42How early sonar work avoided paddle and machinery noiseQ&A
  114. Bruships 28: New Books & Christmas Buys
    3:22:15Under-ice sonar drones and communication limitsQ&A
  115. Bruships 23 - New Book Review
    2:14:50Sonar and the promise of ending the submarine threatNotable Point
  116. Bru Ships Episode 18: Really Big Books, Themed Books to Review & a general Q/A
    3:15:34Early dipping sonar from naval airshipsQ&A
  117. Bru Ships Episode 13: Weapons, Both Personal & Ship, Themed Books to Review & a general Q/A
    41:41Towed arrays, sonobuoys, and ASW picket tacticsQ&A
  118. P2 Introduction to Pre-Tribal Class Destroyers of the RN
    11:12ASDIC changes hidden by a stable type labelNotable Point
  119. Bru Ships Episode 4: Naval Aviation Themed Books to Review & a general Q/A
    2:06:33Airborne radar was a major U-boat killerQ&A
  120. Bru Ships Episode 2b: Book Reviews/Q&A
    20:25ASDIC and sonar terminologyQ&A
  121. Bru Ships Episode 2a: Book Reviews/Q&A
    1:25:14How ASDIC spread across interwar naviesQ&A