De ce nu funcționează pânzele pe nave?

43 thoughts on “De ce nu funcționează pânzele pe nave?”

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2. What about wind driven rotors, similar to the rotor of a gyrocopter? They should be easy enough to stow.

3. So the rotors will never happen because the UN is fucking broken got it

4. If the fuel savings could be counted on then owners would have no problem fitting ships with this kit and the customer chartering the ship would have no problem paying more as they could count on the fuel savings. But none of the parties can count on any of it because at the end of the day, it all depends on the weather…

5. Less freedom is very, very rarely the solution to a problem. International regulation like this would do more harm than good.

6. Far better Electro-mechanical Wind Turbines should have been already developed for many decades! : To impove Energy bills on ships, vertical, horizontal and Omni-directional !

7. characters would be willing to pay more if it reduces their operation costs.

8. The idea that cost saving technology won't be adopted because the owner and the charterer are separate entities, unless we have implement global regulations to force its use, is just ridiculous. Just like a charterer is willing to pay more for a ship that can transport more goods all else held equal, they will be willing to pay for a more cost effective ship, all else held equal. If the owner can't recoup the cost of investment, then the cost savings just aren't large enough. The owner-renter relationship doesn't play into it.

9. But sails dis work on ships foe a great many years how the fuck else could we sail round the world back befor combustion engines

10. Ngl I wondered why don’t we make one that does both lmao. Glad I’m gonna see why it wouldn’t work

11. Bad policy

12. This is the kid with weird hair LOL

13. 3:15 That is a myth. The air current on one side of the wing is not married to the air on the other side. There is no reason for the 2 currents to arrive at the other end of the wing at the same time. So, there is no reason for the air current on one side to move any faster than the air current on the other side. Its the angle of impact that makes a wing work. In other words, wings and sails work on the same principle. The idea that air moves faster on one side of a wing than the other side is pure hooey.

14. 5:32 Aww jeez that Taco Bell got me again!

15. How about give subsidies and incentives instead of global tyrannical regulations. Come on

16. Bro your voice is extremely annoying find someone else to do the voiceover

17. Sails will also make a ship heel, depending on wind direction, which would be disastrous for cargo ships with containers on deck.

18. What about oil tankers who use pipes and hoses to unload and load their cargo?

19. That’s not how sails work 2:09

20. I like this channel, but the title is woefully misleading. Obviously sails work on ships and did so for a great many centuries. The more correct question is "Why aren't sails practical on modern shipping vessels?". It just makes me sad to see quality content creators increasingly leaning on clickbait-y titles that do a disservice to the education of your audience.

21. Why don't the things that were replaced with steam engines more than 100 years ago get used anymore? Gee…. I wonder….

22. Ships have so high burts that the sails could be placed along them. Not to replace the engines but to offload them when possible. Also making ships bridges more aerodynamic would help reduce the air resistance when they sail upwind.

23. Ok, so here's my potentially stupid idea:
    Giant squirell-cage fan with variable geometry.
    Vanes could be oriented so it functions either as a vertical wind turbine or a Flettner rotor, depending on wind direction. With the ship travelling with the wind, it would generate electricity and the added drag would aid propulsion. With the ship going perpendicular to the wind, it would generate forward "lift" due to the Magnus effect.

24. You're not making an adequate case for why regulation is needed. If the devices save fuel, the charterer would happily pay more (to a point) especially for long haul cargo vessels.

25. Coundn't a country mandate that any ship that want to use its ports, must have a certian technology.

26. S.S arctic: am I a joke to you?

27. Sail expensive rod cheap

28. You brought up some excellent points, but missed one. Anyone who has been on a boat under sail knows when going into the wind, which produces the highest speeds, boat heel to one side. This is a result od the force from the lifting action not pulling the boat forward acting against the hull. Anything not securely fastened goes flying. The way cargo is stacked on the deck would tend to slide off.

    As you alluded, there is a multitude of other factors, not the least of which is the need for a keel, increasing the already hefty draight, requiring even deeper water ports This on top of other factors like the shape of the ship to how masts would be secured. Did I also mention the cost of installing and maintaining massive amounts of rigging and sails?

    Implementing green propulsion on ships is very problematic. We see the challenges with wind and electric powered by batteries would leave little room for cargo. The only thing I can think is the use of solar panels to power electric motors – as a supplement to the regular. I'm saying that off the cuff, and people much smarter than I could determine whether that would work.

29. Thinking you need regulations to do things is such an unimaginative cop out. Embarassing

30. Lol this would help everyone in the world so much but those pesky frugalists who understand money and economics just won't do it on their own, so let's FORCE them with government!

31. What exactly is the environmental cost of increasing CO2 levels in the atmosphere? Oh, that’s right – larger, healthier plants; which increases oxygen.

    How is this a bad thing?

32. I love when the answer for why we don't use x, y or z measure to make something more effective (or environment friendly) is "capitalism sucks"

    Joking, i don't love that, it sucks

33. Well… it would be nice if such laws would be introduced internationally, but it is not strictly necessary. The EU could just make a loaw saying only ships with particle filters and energy saving components reducing the fuel consumption by at least 15% are allowed to enter their harbours. And yes, there might be a lot of whining and threads of a trade war, but in the end they would just end up allowing other ships in as well but ddemanding prohibitively high fees which would, in essence, lead to the same effect.

34. Sails unionized and now they can only work in safe, calm conditions with slow winds to minimize ripping chance.

35. Alternative solution that doesn't involve the expensive and useless political wet farthest known as the UN: if the charterer saves money then they stand to gain from using a ship that is outfitted with cost saving devices

36. Delta P over the length of the hull.. make the bow slightly lower in pressure and the ship will fill that space.

37. Wait, but if the ship uses the rotors to decrease fuel costs then the cost of the rotors can be recuperated from the difference, no?

38. Those rotors are sick!

39. this channel is like video morphine.. just watch ,listen and relax… and learn..so ok you don't learn much with morphine,except it's addictive I guess, but I stand by my comparison.. 🙂

40. First – I want to say that I enjoy your videos and explanations on maritime stuff. Very well done.

    Now I want to disagree on a point – regulation is not the way or the solution to achieve what you believe is better. With all regulations / in the end there are some positive benefits and negative consequences… but always the negative outweighs the positive. Same as casinos – the house always wins and the casino owners get very rich. I’m okay with this because people voluntarily gambled their money. But with government you don’t get to choose!

    There are private governance models that will work in these situations and they rely on competition to stay viable which means the over all odds are now in favor of consumers.

41. I like how you think, there's one good idea, let's just expand bureaucracy and force everybody to obey. Classic attitude of a Technocrat.

42. To use the wind to produce energy seems good 🌟

43. Why dont they use wind turbines to generate electricity for electric generators and propulsion???

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