188
US might send the mighty Dorito if won't behave
(sh.itjust.works)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 15 Dec 2023
188 points (88.5% liked)
NonCredibleDefense
6608 readers
1130 users here now
A community for your defence shitposting needs
Rules
1. Be nice
Do not make personal attacks against each other, call for violence against anyone, or intentionally antagonize people in the comment sections.
2. Explain incorrect defense articles and takes
If you want to post a non-credible take, it must be from a "credible" source (news article, politician, or military leader) and must have a comment laying out exactly why it's non-credible. Low-hanging fruit such as random Twitter and YouTube comments belong in the Matrix chat.
3. Content must be relevant
Posts must be about military hardware or international security/defense. This is not the page to fawn over Youtube personalities, simp over political leaders, or discuss other areas of international policy.
4. No racism / hatespeech
No slurs. No advocating for the killing of people or insulting them based on physical, religious, or ideological traits.
5. No politics
We don't care if you're Republican, Democrat, Socialist, Stalinist, Baathist, or some other hot mess. Leave it at the door. This applies to comments as well.
6. No seriousposting
We don't want your uncut war footage, fundraisers, credible news articles, or other such things. The world is already serious enough as it is.
7. No classified material
Classified ‘western’ information is off limits regardless of how "open source" and "easy to find" it is.
8. Source artwork
If you use somebody's art in your post or as your post, the OP must provide a direct link to the art's source in the comment section, or a good reason why this was not possible (such as the artist deleting their account). The source should be a place that the artist themselves uploaded the art. A booru is not a source. A watermark is not a source.
9. No low-effort posts
No egregiously low effort posts. E.g. screenshots, recent reposts, simple reaction & template memes, and images with the punchline in the title. Put these in weekly Matrix chat instead.
10. Don't get us banned
No brigading or harassing other communities. Do not post memes with a "haha people that I hate died… haha" punchline or violating the sh.itjust.works rules (below). This includes content illegal in Canada.
11. No misinformation
NCD exists to make fun of misinformation, not to spread it. Make outlandish claims, but if your take doesn’t show signs of satire or exaggeration it will be removed. Misleading content may result in a ban. Regardless of source, don’t post obvious propaganda or fake news. Double-check facts and don't be an idiot.
Join our Matrix chatroom
Other communities you may be interested in
- !militaryporn@lemmy.world
- !forgottenweapons@lemmy.world
- !combatvideos@sh.itjust.works
- !militarymoe@ani.social
Banner made by u/Fertility18
founded 1 year ago
MODERATORS
wouldn’t nuclear submarines be quieter?
The short answer is “it’s complicated but yes, and practically no.” Nuclear submarines have the operation range to obfuscate their location orders of magnitude better than diesel. Diesel is quieter but their range makes tracking infinitely more feasible. “A needle in a haystack vs a splinter in pail of hay.” Nuclear is better at power projection, diesel is better at short range defense/offense.
Look at it this way: When a diesel sub is endangered, they can turn off everything and I mean EVERYTHING. Quiet as a mouse that doesn't exist. However, it will have to resurface eventually. A nuclear sub cannot do that. The cooling pumps have to keep running. But they can stay under water pretty much indefinitely (until they run out of food).
I assume the cooling pumps make noise when they're running?
Nuclear is quieter than diesel, but louder than electric. Diesel subs are on diesel for transit to/from their patrol area, and on battery for their short-range patrol. Nuclear subs are much quieter during transit, but slightly louder during a long-range patrol.
Nuclear subs have to continuously pump cooling water; diesel-electrics can shut down pretty much everything that makes noise.
Nuclear subs have cooling systems that need to be working constantly. This creates additional vibrations/noise on top of the propulsion system.s that would be pretty similar between both subs. As well as nuclear subs needing to be much bigger, so require propulsion that produce more noise
Diesel submarines can literally turn off every system and just drift in the ocean currents silently, or loiter on the sea floor where they are indistinguishable from a rock.
Worth noting nuclear submarines have a sort of minimum-practical-size determined by the need for a functional nuclear reactor on board. Combined with the plain expense of nuclear reactors means that states can build way more ssk's than ssn's for a given budget. It's often better to have three 25% chances of sinking the other guy than one 50% chance.
Three 25% of sinking is the same as three 75% chance of not sinking. Which is (3/4) * (3/4) * (3/4) chance of not sinking, which is approximately a 42% chance of not sinking, which is a 58% chance of sinking. 58% > 50%, the math checks out.