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Are there half alert levels? Like a yellow alert sort of thing? Presumably when trailing a boomer for days on end the whole crew isn't on alert.... but isn't necessarily relaxed either...
- France raises alert level and deploys three nuclear ... - Reddit
France in particular, the only European nuclear power along...
- France raises alert level and deploys three nuclear ... - Reddit
- Overview
- Collision/Flooding Alarm
- Diving Alarm
- Missile Emergency Alarm
- Missile Jettison Alarm
- General Alarm
- Power Plant Casualty Alarm
- Testing
- References
Six standardized alarms are used on submarines of the United States Navy to alert the crew to situations that require immediate actions to be taken without waiting for specific orders. A higher priority alarm will silence an already-sounding lower one; in order of priority, they are:
1.Collision Alarm
2.Diving Alarm
3.Missile Emergency Alarm
4.Missile Jettison Alarm
5.General Alarm
The collision alarm is used to warn of imminent collision or actual flooding and is accompanied by a succinct statement of the emergency such as "flooding in engine room lower level" (if possible; flooding is deafeningly loud).
The alarm is a slowly rising and falling siren, rather like a stereotype American police car siren, which sounds continuously as long as the switch is held on.
The diving alarm is sounded twice to signal a dive and three times for emergency surfacing, and is accompanied by either the announcement "dive, dive" or "surface, surface, surface."
The alarm is usually described as "ah-OOG-ah." On early submarines, it was an actual motor-driven vibratory horn (called a klaxon after the popular Klaxon Horn used on automobiles); later classes used electronic signal generators in the General Announcing System (1MC) that did not sound much like a klaxon but were variously described as "blats," "honks," or "cow farts." Motor-driven horns supplied by Benjamin Electric (Type H-9 horn) were installed in WW2 fleet submarines. Later motor-driven horns were mostly supplied by Federal Electric (later Federal Sign and Signal, changing finally to Federal Signal - Type H-8 horn) and are still found in certain applications today. Many modern submarines still have Klaxon diving alarms (mostly supplied by crew members or unofficial sources, usually not NAVSEA) paying homage to USN submarine tradition. The diving alarm handle is a green square. Activation of the contact maker causes the alarm to sound until released.
The missile emergency alarm is used to warn of any emergency involving ballistic or cruise missiles, and is found on Ohio-class submarines and on Los Angeles-class submarines with VLS tubes.
The alarm is a fast jump tone, two high-pitched notes repeated several times a second. People asked to imitate the alarm often say "deedle-leedle-leedle" in a falsetto voice as rapidly as they can.
The missile jettison alarm is used to warn of the imminent jettisoning (not launching) of a ballistic missile, and is currently found only on an Ohio-class submarine.
The alarm is a repeating rapidly rising tone, often compared to the "Red Alert" alarm from the original Star Trek series.
The general alarm is used to alert the crew to any emergency not covered by another alarm including all varieties of battle stations. It is accompanied by a succinct statement of the situation, such as "fire in Machinery Two" or "man battle stations missile."
The general alarm handle is a yellow oval. One turn of the handle causes the alarm to sound for a predetermined amount of time; fourteen gongs is a typical length.
The propulsion plant casualty alarm is used to warn of any emergency involving the engine room.
The alarm is a slow jump tone, two high-pitched notes repeated about twice a second, rather like a stereotype European police car siren. People asked to imitate the alarm often say "wee-ooo-wee-ooo" in a falsetto voice.
All alarms are tested regularly. The crew is first warned that testing is beginning, then each alarm is sounded from every alarm location. Because the general quarters alarm lasts for several seconds, the collision alarm is sounded very briefly to override and cut it off. The many locations whence the collision alarm can be sounded are traditionall...
•MIL-DTL-15743/17A, 26 November 2002
•I.C. Electrician 3 & 2, NAVEDTRA 10558-B, 1974
- 3 min
Feb 12, 2021 · If a submarine cannot be detected by passive means, resort to active sonar is usually undesirable. Going active will immediately alert the prey that they have been detected.
Standard Submarine Phraseology, describes uniform voice procedures and phraseology for use throughout the U.S. WW II submarine fleet. This helped save time, prevented confusion and mistakes, and increased the general efficiency of voice communications.
Mar 28, 2024 · Since April 1969, the Royal Navy has maintained continuous at sea deterrence, with at least one nuclear-armed ballistic missile submarine patrolling the seas undetected at all times, ready to...
- As long as nuclear weapons exist, NATO will remain a nuclear alliance.Since 1962 the UK has declared our nuclear capability to the defence of NATO....
- The UK’s independent nuclear deterrent is relevant not only for today, and it will remain an important part of our national security strategy for a...
- Designing, building, maintaining and operating the UK’s independent nuclear deterrent is a national endeavour, directly supporting tens of thousand...
- CASD would not be possible without the skill and dedication of the men and women of the submarine service. They place their duty to protect the UK...
- The UK remains committed to the ultimate goal of a world without nuclear weapons, and supports the full implementation of the Treaty on the Non-Pro...
France in particular, the only European nuclear power along with Great Britain, has also just raised its nuclear alert level: three of the four nuclear-powered ballistic missile submarines (SNLE) that the French Navy has are now at sea.
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Aug 27, 2024 · The readiness of the UK’s fleet of nuclear attack submarines (SSNs) has been a source of enduring concern over the previous half decade. With five Astute -class SSNs currently in service (less than half of what the UK had at the end of the Cold War), the Royal Navy fields fewer submarines than has been the case at any given time in recent ...
