● Sinkings, Attacks

Commando Frogmen .. 

Detecting Submarines ..

German Raiders .. 
Hospital Ships ..

Java Sea - Battles .. 

MCM - Mine Countermeasures ..

Sub-chaser warships - ASW WW1 ..

Survival at Sea ..

Torpedo Defense Systems .. 

41-11-13 HMS Ark Royal 41-11-14 ..

39-9-3 SS Athenia (1922) .. 

41-12-21 HMS Audacity ..

41-11-25 HMS Barham ..

41-3-27 Battle of Cape Matapan 14-3-29 ..
41-5-27 Bismarck Sunk ..

1916-11-21 HMHS Britannic Sunk ..

42-3-28 HMS Cambelltown, St Nazaire Raid ..

45-3-19 USS Franklin (saved) ..

39-10-17 German U-47 Raid at Scapa Flow ..

41-5-24 Hood .. 

42-2-27 Java Sea - Battles ..

40-11-5 Jervis Bay ..

40-6-17 RMS Lancastria ..
1915-5-7 Lusitania Sinking ..
40-7-3 Battle of Mers-el-Kébir - Operation Catapult ..

41-12-10 Prince of Wales ..

42-7-2 Destruction of Convoy PQ17 42-7-25 ..

41-12-10 Repulse ..

1944-8-20 SS Richard Montgomery .. 

1914-12-8 SMS Scharnhorst ..
41-3-26 Souda Bay - Pericles, York ..  

40-11-11 Taranto Raid - Operation Judgement ..
44-11-12 Tirpitz - Sinking ..
44-11-12 Tirpitz sunk by RAF ..

2023-6-18 Titan Implosion ↠

40-8-8 Yamato 45-4-7 ..

Chronological

21st

23-6-18 Titan Implosion ↠

F-35

Expensive F-35 Development (21st) .. 

1912-4-14 HMS Titanic ..

1912-4-14 HMS Titanic Sinks ..

WW1

1914-12-8 SMS Scharnhorst ..
1915-5-7 Lusitania Sinking ..

1916-11-21 HMHS Britannic mined ..

WW2

39-9-3 SS Athenia (1922) .. 

39-10-17 German U-47 Raid at Scapa Flow ..
40-6-17 RMS Lancastria ..
40-7-3 Battle of Mers-el-Kébir - Operation Catapult ..

40-11-5 Jervis Bay ..
40-11-11 Taranto Raid - Operation Judgement ..

41-3-26 Souda Bay - Pericles, York ..
41-3-27 Battle of Cape Matapan 14-3-29 ..

41-5-24 Hood .. 
41-5-27 Bismarck Sunk ..
41-11-13 HMS Ark Royal 41-11-14 ..

41-11-25 HMS Barham ..

41-12-10 Prince of Wales ..

41-12-10 Repulse ..

41-12-21 HMS Audacity ..

42-3-28 HMS Cambelltown, St Nazaire Raid ..
42-7-2 Destruction of Convoy PQ17 42-7-25 ..

44-8-20 SS Richard Montgomery .. 

44-11-12 Tirpitz - Sinking ..
44-11-12 Tirpitz sunk by RAF ..

45-3-19 USS Franklin (saved) ..

45-4-7 Yamato ..

2022-4-14 Moskva ..

2022-3-24 Saratov destroyed ..

Peacetime

1912-4-14 HMS Titanic ..

1912-4-14 HMS Titanic Sinks ..

1994 MS Estonia ..

2023-8-23 PLAN Type 093 Submarine Lost ..

2o23-6-18 Titan Implosion ↠

2022 Russian Invasion of Ukraine ⤨

2022-4-14 Moskva ..

2022-3-24 Saratov destroyed ..

WW3?

USN vs PLA ASMs ..

Submersibles 

23-6-18 Titan Implosion ↠

Submarine (3D) - WW2 ↠

Threat Reduction

Wave Dynamics ↠

○ SA - Sinkings - aircraft ..
○ SA - Sinkings - mines ..
○ SN - Sinkings - naval battles ..
○ SU - Sinkings - submarines ..

Bismarck Sunk ..
Bismarck - Operation Rheinübung .. 

>> Shipping >>

American Merchant Marine - What is Going on With Shipping? >> .

Arctic Ocean - Routes, Resources - Omnia >> .

Building Ships, Navies - Naval Gazing >> .

CCG, RCN - Canadian Coast Guard, Royal Canadian Navy - Naval Gazing >> .

China's Military - Mil Pow >> .

Combat Fleets - U.S. Naval Institute >> .

Defence Economics - Perun >> .

Drowning Bear - Naval Gazing >> .

Eagle vs Dragon - Oriēns >> .

Economics of Shipping, Trade - Buck Wagers >> .

Evolution [Weaponry] Series - nwyt > .

Future Navy - Mil Pow >> .

Hamas Hezbollah Houthis / Mossad - Sutton Who >> .

Infrastructure - Investment in Projects (Canada) - Never51 >> .

Jones Act - What is Going on With Shipping? >> .

Maritime Industry Today - What is Going on With Shipping? >> .

MICs - Military Investment - Mil Pow >> .

Military Investment - Weighs 'n Means >> .

NATO Navies - Naval Gazing >> .

Naval & Maritime History - Shipping >> .

Naval Capabilities - Naval Gazing >> .

Naval Logistics - Mil Pow >> .

Nefarious PLAN - Oriēns >> .

Piracy, Smuggling, Blockade - Naval Gazing >> .

PLAN - Naval Gazing >> .

Ports, Controlling Cargo - Naval Gazing >> .

RAN, AUKUS - Naval Gazing >> .

Russia's Military - Mil Pow >> .

Sea Dragon (PLAN) - Naval Gazing >> .

Shadow Fleets, Dodging Sanctions, Sabotage - Naval Gazing >> .

Shadow Smuggling, Sanction Dodging - Omnia >> .

Shipbuilding Industry, Shipbreaking - Naval Gazing >> .

Shipping 101 - Naval Gazing >> .

Ships - nwyt >> .

Trade: Weaponized Dependence, Hybrid Chokepoints - Eyes Red >> .

VMF - ВМФ - Naval Gazing >> .

Energy 

Energy - Black, Green, Weaponized - Buck Wagers >> .

Energy Challenges - Omnia per Scientiam >> .

>> HybridPow ◻◻   >> Hybrid Conflicts >>>   >> Hybrid Warfare >>>

Infrastructure 

Infrastructure - Investment in Projects (Canada) - Never51 >> .

>> Medieval >>>

Democratic Governments, Antidemocratic Revolt - Bonum V. Mālum >> .
Feudalism - Bonum V. Mālum >> .
History - British Governance - Bonum V. Mālum >> .
Medieval Church, Superstition - Bonum V. Mālum >> .
Medieval Construction - anffyddiaeth >> .
Medieval Education - Bonum V. Mālum >> .
Medieval Guilds, Trade, Economy - Bonum V. Mālum >> .
Medieval Law & Punishment - Bonum V. Mālum >> .
Medieval Life, Health, Defence, Death - Bonum V. Mālum >> .
Strange Case of the Law - Bonum V. Mālum >> .

Shipbuilding, Shipping Industry 

Autonomous Shipping - Naval Gazing >> .

Building Warships, Navies - Naval Gazing >> .

NATO, AUKUS, Shipbuilding - Naval Gazing >> .

Shipbuilding Industry, Shipbreaking - Naval Gazing >> .

Shipbuilding ~ Navies ~ Merchant Marine - Tam O >> .

Shipping 101 - Naval Gazing >> .

Shipping Industry - Naval Gazing >> .

WW2 Shipbuilding, Liberty Ships - Naval Gazing >> .

>> Tariffs 2025 >>>   >> Tariffs >>>

Trade Routes

Arctic Ocean - Routes, Resources - Omnia >> .

Black Sea to Mediterranean - Armor >> .

CCG, RCN - Canadian Coast Guard, Royal Canadian Navy - Naval Gazing >> .

Economic Imperialism - Oriēns >> .

Economics of Shipping, Trade - Buck Wagers >> .

Ports, Controlling Cargo - Naval Gazing >> .

Tariffs, Trade War, Tech War, Sanctions, Blockade - Weighs 'n Means >> .

Trade: Weaponized Dependence, Hybrid Chokepoints - Eyes Red >> .

Trade Routes, Bottlenecks, Infrastructure - Rise >> .

Trade Wars – DUH, West, CRINK - Rise >> .

Trade Wars - West vs Autocracies - Buck Wagers >> . 

Persian Corridor - Armor >> .

Piracy, Smuggling, Blockade - Naval Gazing >> .

Санкции, Sanctions - Impacts, Dodges - Buck Wagers >> .

Shadow Fleets, Dodging Sanctions, Sabotage - Naval Gazing >> .

Shadow Smuggling, Sanction Dodging - Omnia >> .

Shipping 101 - Naval Gazing >> .

 - Blue >> .

●● Defence & Infrastructure ◊

⧫ Alliances, Trade - 21st ..

⧫ Budgets ..

⧫⧫ Communications ..

⧫ MAD - Mutually Assured Destruction ..

⧫ MILDEC - Military Deception ..

⧫ Modern Defenses - 21st ..

⧫ Naval Defenses ..

⧫ Space Defenses ..

⧫ Terrorism ..

⧫ Wargaming, Hypothetical Warfare ..

⧫ Wartime Defenses - 20th ..

A2/AD - Anti-Access/Area Denial 

A2/AD ..

Air Defenses 

Aegis Combat System ..

Iron Dome - Israel's Missile Defence System ..

SAM - Surface-to-Air Missile Defense (S-500) ..
SEAD - Suppression of Enemy Air Defense ..

Arctic 

Alaska ..

Citizens, 21st

Nervous Neighbors (Preppers, Survival) ..

Volunteer Militias (Ukraine 2022) ..

Cold War 1 

Berlin Wall, Walls, Political Divisions ↠

York (UK) Cold War Bunker ..

Ċold Ŵar 2 

Ċold Ŵar 2 in Space ..

> Combat Operations >>

LSCO - Large Scale Combat Operations ..

Communication 

Infrastructure: Polyethylene, radar, and submarine cables ..

PO telephone system ..

Defensive Lines - Structures 

Atlantikwall ..
Atlantikwall - Channel Islands ..
Barrage Balloons ..
Beach Defences ..

Berlin Wall, Walls, Political Divisions ↠
Britain's Early Defences - WW2 ..
Coastal Defence ..

Construction Machines ↠
Defending Against Sealion ..
Defence of the Reich - Reichsverteidigung ..
Defences - structures ..
Defending US Mainland - 2021+ ..

Field Fortifications - Defense in Depth ..

Fort Drum, Manila Bay ..
German defences ..
Hindenberg/Siegfried Line WW1 ..
Ostwall ..

Pacific Bases ..
Red Sand Sea Towers ..
Siegfried Line (1939) - Germany's Western Defences ..

Defensive Shelters 

Air-raid shelters ..

ARP - shelters ..

Bunkers ..

Field Fortifications - Defense in Depth ..

York (UK) Cold War Bunker ..

Defensive Systems 

Aegis Combat System ..

Construction Machines ↠

Field Fortifications - Defense in Depth ..

LOCE - Littoral Operations in a Contested Environment .. 

National Defense Systems ..

Night Fighters ..

Pacific Bases ..

RAF bases ..

York (UK) Cold War Bunker ..

Detecting Threat 

Aegis Combat System ..

Detecting Submarines ..

York (UK) Cold War Bunker ..

Deterrence 

MAD - Nuclear Deterrence ..

DIME

DIME & National Power ..

Drones 

Drone Warfare ↠
Naval Drones ↠

Electrical Grid 

EMP Attack ..

Firefighting  

Firefighting History ..

Geostrategic Projection

European Geostrategic Projection ..

Pacific Bases ..

Manpower 

Demographics & Militaries ..

Marine/Submarine Infrastructure

Marine Infrastructure ..

Military

6th Generation - Fighters, Drones ..

Indo-Pacific Security ..

Lockheed Martin ..

MoD - Ministry of Defence ..

Naval Arms Exports ..

Pacific Bases ..

RAND & American Strategy ..

Strongest Military - USA ..

Submarine (3D) - WW2 ↠

Military Analysis, Strategy

RAND & American Strategy ..

Morale, PsyOps 
Morale ..

Rescue 

Defence, Emergency, Medical, Rescue ..

Rescue at sea ..

Resistance

Resisting Tyranny ..

Volunteer Militias (Ukraine 2022) ..

Space

Warfare in Space ..

Special Operations

Fairbairn & Sykes .. 

Surveillance 

Aegis Combat System ..

Industrial Coding, Chip War, Intelligence ↠ 

Pine Gap (JDFPG) ..

R-U War - Satellite Imagery ↠

Survival, Emergency Preparedness 

Cyberattack, System Collapse ↠

Weaponry

6th Generation - Fighters, Drones ..

ATGM & Missiles ..

Lockheed Martin ..

MD1 - Ministry of Defence ..

Naval Arms Exports ..

Submarine (3D) - WW2 ↠

Weakness - PLA Tanks ..

⧫ Taiwan ⇔ China ..

ROC Armed Forces ..

⧫ Autonomous Robotics, Weaponry ..

A2/AD

22-3-25 A2/AD: A Strategy for Defence of Australia in 21st Century - H³ > .

23-10-14 [Independent Taiwan versus Imperialist Dicktatorship] - Real > . 

23-10-4 Taiwan requests Total Life Systems Management & defensive weapons - Up > .

23-8-17 Xina will watch AFU's marines as Ruscia attempts A2/AD | Tele > .

23-8-15 A2/AD & Taiwan’s Asymmetric Strategy to Repel Xinese | WSJ > .

23-8-9 Force Design 2030 EABO vs Xina's A2/AD - Uncensored > .

23-2-26 Defence strategy for small nations - force design, deterrence - Perun > .

22-2-6 Military deterrence - Anders > .

>> H³ >>

> Strategy >>

USA > Multi-Domain Operations >> 

24-9-6 [Military Doctrine: US Army's Radical MDO Upgrade for WW3] - T&P > .

Strategic Studies - Conventional - J Spencer-Churchill >> .

Tactics, Operations, Strategy - Fyrd Færeld >> .

Anti-Access/Area Denial (or > A2/AD >>) is [an asymmetric] military strategy to control access to and within an operating environment. In an early definition, anti-access refers to those actions and capabilities, usually long-range, designed to prevent an opposing force from entering an operational area. Area denial refers to those actions and capabilities, usually of shorter range, designed to limit an opposing force's freedom of action within the operational area. In short, A2 affects movement to a theater, while AD affects movement within a theater. A2/AD typically refers to a strategy used by a weaker opponent to defend against an opponent of superior skill, although a stronger opponent can also use A2/AD.

Acoustic Locators & Sound Mirrors

.

No Radar? No Problem! > .

Air Defense Early Warning Systems (in Origins of Radar Technology) > .

Innovative [paraboloid] Sound Mirrors Helped Detect Enemy Aircraft - Science > .

Testing The Romney Marsh Sound Mirrors That Protected Britain - Tom Scott > .

Sonar 

23-10-31 Sonar revealing secrets of sea, lakes, and rivers - CuDr > .

23-7-7 Sonar - Qxir > .

21-10-19 How submarines navigate and find targets - Forces > .

20-12-26 How Sonar Works (Submarine Shadow Zone) - Smarter > .

20-3-14 How Submarines 'See' Underwater - Sonar Overview - CoCa > .

Radar 

Cavity Magnetron - Device that Won WW2 - CuDr > .

Brief History of Radar with Tom Scott | STARRSHIP > .

Bizarre Origins Of Radar Technology | Secrets Of War | Timeline > .

Nuclear Submarine Deep Dive - Smarter >> .

Warfare Topics - Covert Cabal >> .

Acoustic location is the use of sound to determine the distance and direction of its source or reflector. Location can be done actively or passively, and can take place in gases (such as the atmosphere), liquids (such as water), and in solids (such as in the earth).

• Active acoustic location involves the creation of sound in order to produce an echo, which is then analyzed to determine the location of the object in question.
• Passive acoustic location involves the detection of sound or vibration created by the object being detected, which is then analyzed to determine the location of the object in question.

Both of these techniques, when used in water, are known as sonar; passive sonar and active sonar are both widely used.

Acoustic mirrors and dishes, when using microphones, are a means of passive acoustic localization, but when using speakers are a means of active localization. Typically, more than one device is used, and the location is then triangulated between the several devices.

As a military air defense tool, passive acoustic location was used from mid-World War 1 to the early years of World War 2 to detect enemy aircraft by picking up the noise of their engines. It was rendered obsolete before and during World War 2 by the introduction of radar, which was far more effective (but interceptable). Acoustic techniques had the advantage that they could 'see' around corners and over hills, due to sound diffraction.