Everyone’s feeling out and stuff and I’m like the only one like “woahh that’s amazing. I’ve been on a ship and wanted to see what these looked like.” Never gonna regret it. This is awesome.
They’re called Z Drives. Super efficient. No need for rudders, reverse gear etc. it multiplies the “rudder” power significantly, giving a skilled operator much better control over the vessel. The one Achilles heel of this system is shallow waters.
Despite not needing rudders or reverse gears These type of propulsion systems are a lot more complex and require a more maintenance since water leaking into them is much more problem compared to a regular placed propeller. Regular ships (especially if large) have thrusters placed on the bow side of the hull which helps with manoeuvrability they are limited on size which can make them less fuel efficient as they are limited to around 6 metres unlike a regular propeller which are about 9-10 metres in diameter which would be able to displace 3-5x more water per revolution than a 6 meter propeller. The same amount of thrust at lower rpm is generally more efficient
I have submechanophobia.. It's the worst thing to happen to me. I could never go on a cruise, I can never enjoy the beach again, I can't even go fishing anymore. I want to fix it, I've been searching information about it for months, but it's only gotten worse. I was at a historic ship tour attraction, and the closer I got to the ships the more I could see the dock posts underwater, which made me start getting tears in my eyes and I had a panic attack. This video itself made me start tearing up honestly. I really don't know how to fix this fear.
I also have it, but a little bit less. I can be on a ship or a boat, every summer I go on a cruise, I can look at the mechanical things under the water if I'm out; but I can't swing in deep water and less with a boat or something else, I'm not trying to fix it, I just try to live with it. If you want I think you can fix it with therapy. (Sorry if I spelt something wrong in english)
@@demetrijohnsonssirenvideos3590 Well, the largest ones (the 9-10 diameter), spin at a ridiculous RPM. You can't even see the blades moving, they are that fast. It's just a solid disc the size of a large three story building.
@@michaelcaplin8969 Yeah thats not true (sailor here). Larger ones rotate slower because the larger the radius, the faster the outside point of that circle moves through water at a given RPM (think hitting a golf ball with a mini-golf club versus a driver) You can only move the tip of a propeller blade through water at a ceirtain amount of speed until the water cavitates. When cavitation happens, the propeller is at (or very close to) its output limit. So to get more thrust, you increase the area of the blades by giving them a larger radius and lower RPM. At that RPM the water is still at the limit of cavitation, but you have a lot more surface area pushing it, so more force. The larger the propeller is, the fewer RPM it can turn. Still, if you get hit by the tip of a large propeller turning 120 rpm (pretty normal speed), relative to your body it will move as fast over your skin as a 5000 RPM boat motor.
You have to hand it to the folks at GOPRO, they bring an additional level of creepy realism to this already uncomfortable video. I feel like I'm right there next to that thing. especially 1:06-1:29 you have the blue open water on one side and the mechanical propeller on the other......~shiver~ Otherwise this is a nice video. thanks for sharing it.
I used to be scared of the grates in my pool but I got over that when I was 9, but never in a million years I will get over the fear of submechanophobia
For submechanophobia it depends for me if its like a ginormous creature in blurry water now that scares me but if its the RMS Titanic shipwreck I'm amazed by it it just looks cool
+William Stephens im not trying to start shit,but i study these things and have even googled it after the first comment and nothing of the sort comes up.
The way they constantly change orientation, is this done on purpose for the recording, or is there another reason like post-maintenance testing or position holding?
I'll tell you my story.Once i was on a cruise and we would be getting off the ship to an Tropical island.We would be taken by tiny boats and they were like docked whit the boats ramp.The fucking ship was like half meter away from me then i looked up and i acutally got an panic attack.It was so tall and then i looked back.There was the fucking propellers like 20 meters away.It was a horrifying moment of the cruise
because sometimes we like to be scared...unless that's just me. But in REAL life, I would have a heartattack. No fun there o.o but watching videos to get some shivers is fun for me...a little...I can only watch a few before I get a panic attack and then that's bad
It's called Megalohydrothalassophobia or Submechanophobia, they're real phobias. Coupled with the fact large spinning ship propellers can kill you it shouldn't be too hard to understand and it's not the most irrational phobia I've heard of.
