this post was submitted on 03 Nov 2023
597 points (96.6% liked)
NonCredibleDefense
6660 readers
326 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
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
So looking at a map.of New Yorks bays and ignoring depth and bridges I'm going to assume this is about 2 miles long or 10,560ft. I have no evidence and just eyeballed it.
Meaning if you can overcome the skin friction it has a hull speed of about 160mph...without planing.
Modern carriers have a hull speed in the neighborhood of 45mph (though officially the top speed is like 35mph) and normally cruise at 25-30mph so the slow pokes can keep up.
I, too, prefer my measurements in knots uwu
The average person has no reference for what a knot is. I know and you know, but the layman doesn't. Plus I figured anyone that wants knots can figure it pretty quick.
https://youtube.com/watch?v=VYOjWnS4cMY
Huh, TIL.
(Illustrated.)
Even with that I still don't get it. Is that a theoretical max speed?
So, as I understand it, a boat (ship) operating in displacement mode is going to be the most efficient, up until that speed. Past that most of the additional power you put in is going into just shoving water out of the way that really doesn't want to, rather than fighting friction. Also it's where the entirety of your ship is trying to climb its own bow wave, so you're trying to push the whole boat up hill.
If you want to go faster than hull speed you need to have a different hull design like a semi-displacement or planing hull. These are a lot less fuel efficient than displacement hulls as well as some other dosadvantages with weight and bad weather, but if you want to go fast they are your only option.
TL;DR: it's sort-of a max speed. It's probably better to describe it as, the speed at which you need to go back to the drawing board for that vehicle.
But what if we just add more engines? And, lest you think it a simplistic idea: what if they were even bigger engines?
It can go faster, but you wouldn't want to be on it.
Or near it.
And what if we painted it red? Red make go fasta
Im pretty sure relevatistic laws eventually come into play.
So it's the fastest you can go before calm seas become a roller coaster.