Want to continue learning about engineering with videos like this one? Then visit: courses.savree.com/ Want to teach/instruct with the 3D models shown in this video? Then visit: savree.com/en

Love it when collaborations like this shine a light on channels I hadn’t discovered before. Very interesting video, and looking forward to exploring your back catalog. Cheers!

@Edithmedjdoub

2 жыл бұрын

I dont care

Interesting point about the inside color - I see that as not just comfort, but helpful for keeping the occupants' eyes functional. I once had a math exam on neon pink paper, staring at that for an hour caused pretty severe eye strain and I developed an eye twitch afterward, took a couple days to go away. Teacher realized that probably hadn't been a good idea. Looking at really bright colors briefly is fine, but too long can become problematic. As bad as it was for an hour, it would be far worse seeing nothing but an uncomfortably bright color for multiple days - that combined with all the other stresses of trying to survive in a life raft, I could see it driving someone to madness.

@disrael2101

2 жыл бұрын

what about closing the door against water & waves??

@human_936

2 жыл бұрын

Same thing happened to me, but the teacher did not care.

@Eduardo_Espinoza

2 жыл бұрын

I might get burned at the cross, but I'm starting to notice KZreadrs are actually just as average as us looking this info up for ourselves, because there are other colors for the inside & outside, a lot of the video was that & the visibility answer felt like an improvised research point from the get go of this iceburg.

@nicholashodges201

2 жыл бұрын

The yellow seems to be the center of the vin diagram for the features needed. It's highly visible, and can do so without being offensively bright to *most* people. It increases the apparent brightness of a dim light, reflects heat fairly well and is shown to have positive effects on human emotions when used in room color.

@Shinzon23

2 жыл бұрын

Why did your teacher even have hot neon pink paper handy...?

Casual Nav sent me here. May the algorithm gods shine on this channel. Nice collaboration btw.

3:11 I did many liferaft drills in wave pools with artificial rain and wind. And even it was only a training drill It took me a great amount of stremgh to board the raft.

@robinj1052

2 жыл бұрын

@Jack Same here. Also trying to straighten up a turned over life raft is pretty hard.

@savree-3d

2 жыл бұрын

I agree. Other cadets pushing me back out if the life raft didn't help 😀

@robinj1052

2 жыл бұрын

@@savree-3d hahaha, that's just fun: wait till they're almost in, and then give them a little push

@brrrrrr

2 жыл бұрын

@@savree-3d they *what*

IDK why but while I hope I am never in a position that I have to use one of these I do find it comfortably reassuring that if someone else is in trouble at sea they have nifty designs like this.

@gworfish

2 жыл бұрын

I was sort of thinking that with less safety equipment, and a cooler for drinks, this would be great for rafting down the local rivers.

@patrickgardner2204

2 жыл бұрын

@ET Hardcorgamer I think having a portion of the weight dedicated to "fun" things would be a good idea. Humans don't do well in cramped spaces for long periods of time, so to have something to take your mind off your situation would be a great help to make their situation better, something as simple as a deck of cards or a book, just some stuff to help relieve stress and keep them in good spirits.

@Jomskylark

2 жыл бұрын

They even have a reading light lmao

@gworfish

2 жыл бұрын

@ET Hardcorgamer Well that's a good attitude. I mean if you are there, best try to enjoy it.

The floor can be manually inflated (by lung power). The floor should be inflated in cold weather and left uninflated in warm weather. In cold, you want the insulation. In warm, you want the relative coolness of the water against the underside of the floor to help cool the inside. Also, if in a situation where day/night temps are extremely different, you may need to manually add air to the main bladders originally filled with CO2 at night, just to have the pop-off valves blow it back off in the heat of the day.

@vanderkarl3927

2 жыл бұрын

Do you get a force advantage somehow in order to bring the floor to adequate pressure using only your lungs?

@naverilllang

2 жыл бұрын

@@vanderkarl3927 TL;DR: no, but you shouldn't need one. You can produce enough pressure with your lungs Humans can produce around 2-2.5 psi of pressure with their lungs. by my rough estimate, I take up about 3-4 square feet of surface area when sitting. taken 3ft, because it's the less advantageous number, I get 108 square inches. at 2 psi, the relevant area is exerting 216 pounds of force, which is in excess of my actual body weight of 195lbs. It's a workout for sure, but not one that 6 people taking turns can't manage. Not like they got much else going on anyway...

@markfryer9880

2 жыл бұрын

@@naverilllang You are assuming that everyone in the life-raft is fit and healthy. Chances are that they won't be.

@stephenbritton9297

2 жыл бұрын

I should say some of the bigger rafts may have a pump

@Jomskylark

2 жыл бұрын

If I ever have to board one of those life boats there is zero chance I'm gonna uninflate some aspect of the lifeboat bobbing out at sea lol

Hey, I actually discovered your channel accidentally yesterday, but I'm here today because of the Casual Navigation link. I've followed them for ages so a thumbs up from them means I know I'll find a lot of good content here. Thanks mate. 👍

@morkovija

2 жыл бұрын

welcome!make yourself comfortable and enjoy the backlog=)

@gworfish

2 жыл бұрын

@@morkovija Thanks. Yeah, the video description said I have 45h of catching up to do. But I like a challenge. And if I take your advice, at 1.5 speed that's only 30h. 😊

@morkovija

2 жыл бұрын

@@gworfish i'd recommend "improve youtube" browser plugin, where you can set the default playback speed, unless you're watching on smartphone, in that case its a bit harder. But yeah, i should check the backlog too. didnt know it was this huge x) Cheers!

Hi saVRee. Casual Navigation fan here, just discovered your channel. I've binged 5-6 videoes in a row just now, I'm very impressed by your talent for explaining. I'm a deck officer cadet in the merchant navy, and never really bothered what's going on in the engine ;) But now I've got some idea thanks to your engine and steering gear walkthroughs. Fantastic job! I am looking very much forward to more ship videoes, maybe something Inert gas plants on tankers and loading/discharging operations etc.? Also marine boilers, ballast water treatment systems could be very nice. Thanks

chilling on water with tube water and reading light... damn this is a yatch all by itself

@Jomskylark

2 жыл бұрын

yea lmao at the reading light part, i guess you gotta pass the time somehow but idk if anyone's gonna have books on there lol

Link to the Casual Navigation 'Why Don't Ships Have Enough Lifeboats?' video is below. If you like learning about maritime topics, it's a great channel. kzread.info/dash/bejne/eKuptZl7gafNdZc.html

@TheDarkFalcon

2 жыл бұрын

He mentioned in his video though the weight of the life rafts was partially because of the water they have to have (1.5L/person)... But you said life rafts contain no food or water? 🤔

@montecorbit8280

2 жыл бұрын

Too bad you stopped the video as soon as you said "lets go look at some of the things in the liferaft....

@montecorbit8280

2 жыл бұрын

@@TheDarkFalcon He said "did", not "didn't"....the accent may have gotten in the way....

@TheDarkFalcon

2 жыл бұрын

@@montecorbit8280 nah I see how I eat confused, he said the rain catcher was the most important thing on the raft because "Without water, you won't last long at all" I thought he was saying that the raft didn't have any water in it and that the collector would be the only way to get any.

@montecorbit8280

2 жыл бұрын

@@TheDarkFalcon The rule of 3s in survival situations. It helps prioritize things in order of their importance.... 1:. Three minutes without air. Self explanatory. 2:. Three hours without shelter. Depending on where you are and the season shelter can be more important than food or water. 3:. Three days without water. This can change out a lot. You will not survive in the Sahara desert without water for 3 days, maybe one day.... 4:. Three weeks without food. This does depend on your level of physical output and your health status.

I've been struggling badly lately with depression and anxiety and your videos not just entertaining but so helpful in so many ways thank you so much ☺ ♥

Casual got me over. KZread should have recommended you sooner to me. now here I go binging till morning.

@savree-3d

2 жыл бұрын

Glad to hear that!

Jolly good of Casual Navigation to link to this channel! Very good video.👍

“Which to me is slightly offensive” 🤣🤣 brilliant. Your videos are the best out there for my orals love this channel

Honestly this life raft seems way more accommodating than does my shitty little apartment

@penderkev

2 жыл бұрын

According to Solas if the inside of the raft is 1.5 m X 3 m , (my estimate) then it has a capacity of 12 persons. the most I have ever been in a raft with is half the capacity and they always seemed full.

Fascinating stuff!🙏

The raft should also have a cat-eye radar mirrors somewhere at the top, so they can be seen in spectrum other than visible wavelength. Some flexible / surface coated PV panels for basic electricity would be nice too. Personally I prefer the hexagonal shape as it's optimal in terms of volume vs surface area and can be combined more tightly when in groups. BTW it's a great introductory video, one never knows when this knowledge may come in handy.

outstanding work Jon!

Great info here, How many of you who watched this anticipate needing to be reminded your boat has sunk, which is why you are in a life raft...

Great video!

So if I go back to the casual navigation channel video now as instructed I'll then get told to come back here again... I might end up in an infinite loop. I didn't know youtube was this dangerous! In all seriousness though, nice clear and simple overviews on both channels of some design aspects. Did know they were contained in the boxes somehow and could be inflated but didn't know much about the deployment mechanisms and how they are generally designed.

@savree-3d

2 жыл бұрын

Each visit is an extra view for us! Our evil plan worked (cue prolonged evil laugh) 😀 Thanks for watching.

@carneeki

2 жыл бұрын

The casual navigation link sent me to this video too but I didn't see a link to the equipment list video. Not sure if I'm blind or just too early and it's not published yet. Also, great videos!

@gworfish

2 жыл бұрын

You can check out, but you can never leave.

@regular-joe

2 жыл бұрын

@@carneeki I'm also feeling a bit at sea about where that video may be...

@markfryer9880

2 жыл бұрын

@@regular-joe Boom boom!

Came here from Casual Navigation, thanks for the explaining video!

I am an offshore interpreter and this was very useful. cheer.

Nice to see new great video.

6:47 - I'm guessing that the water would still be a bit salty from ocean spray, especially if the raft has been on the water for a few days, right?

@savree-3d

2 жыл бұрын

Bit salty, but you can flush it first. Beggers can't be choosers!

@reiver9031

2 жыл бұрын

@@abhignavijjapurapu209 When the rain first hits, collect and then throw out the first bit of rainwater, which will have 'rinsed off' the salt on the roof. Then the rest of the water should then be relatively drinkable, provided your raft isn't being washed by heavy surf..

Hello first of all, i want to say thank you for you phenomenal video which they help a lot! And then i would like to see a video on thrust bearing of main engine, therefore regarding shaft line. Again thank you so much!!!

Thank you!

With today's technology you would imagine the life raft having a small solar panel to charge a flashing light and possibly a personal locator beacon.

@Jo-tv6sj

2 жыл бұрын

The beacon idea sounds brilliant, and I'm sure there's a reason they aren't installed, but I just don't have the knowledge. Though I'm not too sure if a solar panel would be worth the cost. I can see an attempt at using solar panels on life rafts, but I have a feeling they're just too expensive to become a standard addition.

@potatomo9609

Жыл бұрын

Solar panels are not inflatable

i just watched a 10 minute video about life rafts.... and i liked it.

very nice explanations and video. If those reflecting tapes were larger like going around the craft and also crossing the whole length on the top would be more noticeable at night.

@Alex632

2 жыл бұрын

they don't want the strip to get mistaken for a reflection off water/waves. It broken up means only certain parts will be more reflective, it being unevenly reflective is making it more identifiable. Hope that makes sense.

@markfryer9880

2 жыл бұрын

I think that there could be more reflective tape and square or rectangular shape would help capture attention.

Found this from Casual Navigation! Really good explanation! Not sure if I missed it or if you're going to talk to it in the future, but is there a flap/zipper door on the opening? I think I'm seeing something rolled down that reminds me of what I've used in camping tents. I've never sailed in my life but seeing this well explained videos is fascinating!

You just got a new subscriber you chad

To find a color, that comforts everyone is hard to find I think. I imagine not to be bothered by it, but I don't know if I feel the same after 4 weeks of staring at it :D

Brilliant video, thank you so much. Some questions which were left answered (at least for me): 1. can you close the rainwater tube if necessary? 2. is there a container for rainwater inside? (I'm aware of the sponges, but those cannot store liquids as well as containers) 3. are the lights not LED? their battery consumption should be close to zero and may be used for comfort all night long, no? 4. are the top lights flashing like those on an airplane? what color are they?

Thanks for sharing information, very important to have a Liferaft at sea 🌊 To sail ⛵️ long voyages, this is very nice everything need to know before leaving the land. Brilliant important how to survive at sea 🌊.

0:55 5:55 7:07 9:09 9:39 AranaRaft Nice info, i always wondering what's the life raft leg for. Now i knew it for holding the raft stable by collecting sea water

Hey! I checked for a link in the description, but where do I go to buy my own saVRee brand life raft? 😉

Solar is so cheap today it should definitely have a mini solar with a mini back up battery for the light and a device on board that sends position for every hour

I've been to sea once, Tuna fishing. Never felt so small. On a boat the size of a large bus floating over moving house's. The thing I remember most was the glow of the prop wash. Was like a glow stick from hell...

Good vid bro

@savree-3d

Жыл бұрын

Glad you enjoyed it.

Im sure others have wondered too...but how do you go to the toilet/bathroom?

great work... please also make video on animation of air pump primer

What software do you use to create these designs

Won't the rain water tube cause the raft to drown if left unattended? I didn't see a cap on the tube...

@JohnDoe-kv3cm

2 жыл бұрын

Iirc Life rafts come with containers to get water out. If you are in a position that enough rain water is pouring in to sink you and nobody is able to get the water out then you are pretty much dead already I imagine.

@disrael2101

2 жыл бұрын

what about closing the door against water & waves??

@Jomskylark

2 жыл бұрын

If you're in it then you can probably just stick a piece of cloth in it or something to stop it up, if you're not in it then you're either rescued or dead

Isn't there an opening on the raft (like a sighting port) which can be used for keeping watch with all the other openings closed??

@savree-3d could you teach me how you made this animation? I currently have a 3d model on fusion 360 and I am trying to bring it into blender to create a proper animation with key points.

6:47 would be nice to have a small solar panel on it somewhere too

Hi savree, great production and inovation! let me introduce myself, I am an outdoor enthusiasts, and I also teach survival occasionally. I regularly raft in rivers and camps in the woods. And I think I have some idea to improve your design. First, you should've implement some symbolism in your raft, for example, instead of 6 PERS try to change it to 6🚹(person symbol) so people who might doesn't speak english can understand it. So goes with operating the lights, and valves and roof (more about it later). Secondly, you could implement drain holes that you could open and close in the corner of your boat, just like a river raft does, it make sure that the raft will never flood with water and also can capture water vapor from the ocean itself when its hot if it opened so survivor wouldn't need ro rely in rain for drinking water. It also needs to be having a dew collection system like a low spot inside the roof. (Should've work like sea water collection system) Speaking of roof, you might consider using flexible and detachable fibers frame and roof to support your roof because it known to held up in heavy wind and blizzard in the himalayas. And the roof it self should've use material like tarp or dyneema composite fabric that have tensile strength 15 times better than steel, very light and virtually waterproof. It could use straps, buckles or carabiner to strap it to the boat and hangers to attach it to the frame like camping tent does. This system will also reduce the reliance on gas or air to be deployed. And also can lightening the package for considerable amount as a bonus Another improvement for the roof that i could think of is try to consider a closable door for the roof because if it rains the water are going to flood the floor. You could use waterproof zipper or layering the zipper with the extra material as redundancy. And try to implement two door so i can improve air sirculation. And if it raining at nigth and the survivor have to sleep try to implement a ventilation system like mesh that could open and close in the roof so CO2 doesnt build up in the tent and suffocate the survivor when they sleep when it rains. (Try to look out from camping tent design the good one will always have this feature) You could also include a detachable lightweight solar panel that's popular among hikers these days. I could be hang on top of the roof to get better efficiency and can make sure the light can stay on indefinitely I like how you include paddles in your boat but as a rafting guide, I could not think how would you steer and navigate with such limited space to paddle. So that detachable roof might come in handy for this function also can make survivor can easily climb from any side if it detached and from initial deployment. I know my comment might not reach let alone give difference or even further complexing the design and production but I think that's a small price to pay for life in the survival situation.

@conorkelly947

2 жыл бұрын

My very first thought was symbols would be an instant improvement over english

4:26 i would pressure they are not just 2 tubes be rather 2 tubes segmented into air tight pocked via baffles sight that a puncture in one would only deflate a segment and not the whole tube tho

Do these pressure release valves need to be actuated manually? Or do they automatically vent overpressure

@savree-3d

2 жыл бұрын

It's automatic. Most pressure release devices are automatic.

I want one !

Please can you help me about how can I select power of on off actuator for open or close abutter fly valve thanks alot

I'm literally watching this because the casual navigation narrorator guy told me to.

Why are the reflective patches so small? It looks like they could easily be 4x the size and still leave a lot of yellow visible.

What are the big "boxes" on the bottom?

Could you do a video on Diesel Electric and or Gas Electric?

Interesting they do not haved soft or pliable solar panels builded into the exterior roof panels to recharge your batteries. All so they should have a emergency satellite telephone as equipment or at least a EPERB and the solar panels could charge them as needed.

Yellow !!!! I want an orange raft Captain !!!!!

Where can I buy one?

8:28 What's all that coming out of the final smokestack on whatever ship this is? The Titanic's fourth stack was a dummy, used only for kitchen exhaust.

I find it curious that there aren't any solar panels to recharge the batteries for the lights. Also, why not have the water collecting V cover the entire length of that side of the raft?

A SART transponder would be useful. As for me, I couldn't care less what color the inside of the raft is as long as it keeps me floating. :)

It is an IR light on top and you don't turn it off during the day.

Came here because of Casual Navigation. This was a great collaboration!

@savree-3d

2 жыл бұрын

Thanks! Nice to work with other good content creators.

Does it have a door ? That half circle opening? Can it be closed,

2:01 might to well to have a weather balloon and helium with a radio beacon on it they stay up longer than rockets and you can always haul them in in a storm

@raymondclark1785

2 жыл бұрын

We had a hydrogen generator for sending up balloons with the Mae West radio but it could melt a hole in the raft :(

A couple of things this raft needs are netting seats to keep you off the floor. A floor off the water with a drain. A zippered room for using a bathroom.( uncomfortable for women to go no. 2 over the edge of the door when people are watching). A mirrored disco ball (small) on top of raft to refelect sunlight. (Bright colors are hard to see far away). Your wet and cold you need sealed expandable insulation?? Expands when boat is inflated. Wool blankets?? Not a piece of rope for a ladder a slide with cleats.

@pieterveenders9793

2 жыл бұрын

These rafts are meant for making a difference in life and death situations. If any of the occupants has trouble pissing or shitting because of the other strangers on board, tough luck.

@Jack-bs7cy

2 жыл бұрын

@@pieterveenders9793 yeah but it might be because of making it cheeper. And I hate that.

@pieterveenders9793

2 жыл бұрын

@@Jack-bs7cy Yes, but you can also look at it from the other side. In wealthy developed countries buying life rafts like these is like small change, but for poorer countries probably not so much. So every bit of saving on non-essential things to drive the costs down will also make it more affordable and thus likely to be placed on ferries and fishing boats in the less well off regions of the world, potentially saving additonal lives.

I suggest that put small solar panel to charge the battery of the light.. So that every time the person can use light

What about staying landlocked?

Why not make the entire Liferaft out of retroreflective material, similar to a reflective vest? Furthermore, why not use some sort of radar reflective material to help it be more visible to radar. Same question with sonar.

Wouldn't salt water from high waves get into the rain water capture device?

Just one quick question, does 6 PERS mean “Six Person Emergency Rescue System?”

Most likely there is a bad storm that causes the boat to capsize. Will not be like a swimming pool. So getting on board easy will be difficult. If your life raft is out of certification and not able to recertification it put in water and inflate it try getting on board.

food rations and survival kits are required inside a life raft

👍

Why not make the water collecting V even bigger to use the entire space available?

Wish there was a liferaft that can withstand a meglodon attack or a great white shark attack. Or a EMP attack

When they're looking for you, HOPEFULLY. LOL

You should sell small life raft replicas.

What do you mean that to you the color is slightly offensive?

Came over from Casual Navigation. Informative and I like it. However, the pulsing text at certain spots, such as 7:42 and 8:20 is literally nauseating. I'd encourage you to stop the pulsing. If you lose the pulsing, I'll sub.

@savree-3d

2 жыл бұрын

Agreed. Was a mistake. Only supposed to pulsate for the first bit of text at the start of the video.

Why is it yellow outside & inside?

I wonder how much effort is required to create a hole in such a lifecraft that makes it sink. Sharks are know to test-bite unknown stuff, so I am worried by that.

@robinj1052

2 жыл бұрын

Not very likely, as the buoyancy collars are fully redundant. What you do need to worry about, is taking anti sea sickness pills as soon as you board the life raft.

@disrael2101

2 жыл бұрын

what about closing the door against water & waves??

@timboffm595

2 жыл бұрын

@@abhignavijjapurapu209 Happend Steven Callahan. He was 76 days alone in a life raft, the raft was attacked and damaged by sharks

There is no turning off those lights the battery is a sea water battery. You can't save power on those.

It's been 2 weeks, where's my equipment videoooooo

@savree-3d

2 жыл бұрын

Here you go: kzread.info/dash/bejne/l6l2rLptYNSdoKw.html

@duykhang91

2 жыл бұрын

@@savree-3d thank you good sir kind sir

Anyone else ever been to a store called "No Frills"? It used an awful yellow color, and that color was everywhere in the store. I had to leave, because the color made me very uncomfortable, almost nauseous. I would not want to be stuck at sea in that life raft. (Not just for the color, mind you, being stuck at sea in any life raft is only preferable to being stuck at sea without a life raft.)

Hi SaVRee. Being as how both separate, CO filled tubes are made of rubber, I'm wondering how do they stand up to the problem of the highly likely "exploratory" shark bite? (Attracted to the raft, perhaps, by way of human urine and/or faeces being expelled.)

Can you close the entrance?

@savree-3d

2 жыл бұрын

Yes you can!

nice video, well done! Btw life rafts are not necessarily square shaped, they also can be octagonal.

@ptonpc

2 жыл бұрын

He does say that in the video.

5:20 Isn't a CO2 release valve on the inside dangerous? If that leaks and the CO2 level inside gets too high, isn't there a real danger of suffocation?

@benfetterman1276

2 жыл бұрын

With how open the life raft is and how little CO2 would be vented, this should be a non-issue

@Shasta--1

2 жыл бұрын

I'd worry much more about the CO2 of the other passengers if you closed the flap. I almost killed myself and my husband camping that way once.

@grondhero

2 жыл бұрын

@@Shasta--1 Speaking as a man who's been married for two decades, it might not have been the _air you were exhaling_ that nearly killed him. ;) j/k Glad you're safe.

That V thingy is not gonna be useful after some waves. Water coming from the pipe after the collection area has been soaked with seawater and then dried by sun is undrinkable

GREAT VIDEO, NOW TAKE IT IN THE WATER 💧 TO SEE HOW IT PERFORMS 🎭

i would go fishing in that..lol

Surprised they don't incorporate a solar still, to turn sea water potable

@markfryer9880

2 жыл бұрын

I was thinking about that as well. The rainwater collection channel seems very small to be harvesting water for 6 people. A solar still would be a definite advantage.

Where is the ensuite toilet?

If you think about it If we have space colonies and tuff in the futur SOLAS will still be SOLAS Instead of "safety of lives at sea" it will be "safety of lives at space"

But does the door zip up?

@savree-3d

2 жыл бұрын

Yes, it does.

Should double the function of the v funnel by using reflective material. Put them on all sides of the canopy to maximise rain collection. Also make all rations bars gluten free.