Видео

Why are azipod propellers placed back to "pull" the ship instead of "push"?

Excuse me, Sir. Can u design control of autonomous ship using NMPC in matlab?

Great video! Thanks for the truth about Pivot Point!

Thanks, That is mind boggling . I was just trying a PC ship simulator with a ship with Azipods and couldn't figure out what was happening with the steering. This makes it clear, although I suspect it takes lots of practice before being allowed to steer a real ship.

When it comes to moment calculation and lever determination, the use of pivot point to calculate levers from is proven wrong. However, there are still few things that we have to explain in order to completely kill the traditional explanation. a) Effectiveness of tug on port/stbd bow or bowthruster when the ship is moving ahead. - In traditional explanation tug on port/stbd bow or bowthruster when the ship is moving ahead is ineffective because of the short lever between PP (1/3 from the bow) and the force application. However, now we proved this theory completely wrong, and you said that we calculate lever from point G. That would mean that the Tug will have the same moment weather on bow or stern when the ship is moving ahead and thus same effectiveness. That is also not true. It is well known that tug is more effective aft when the ship is moving ahead. But, can you explain why? b) Kick Ahead Maneuver - What is the theory behind it? The traditional explanations say that when the kick ahead is performed, the pivot point jumps forward to 1/8L from the ships bow and so the lever between rudder force and PP is very big. I would like to know how you explain this maneuver. Thanks!

Most important part is missing

Hello Sir, can we predict how much the ship's turning circle will increase or decrease under the influence of wind? or can you suggest me how to calculate them. Have a nice day!

excellent video series! I have an exam in Seakeeping and Maneuvering tomorrow. these have been a great help!

thanks alot,Sir!

want to look at downloading software but there is no contact info on the imss website

Hi there, i am currently building my own simulator for home, but i cannot find any azipod controllers or thruster controllers for sale anywhere, so could you point me in the right direction to find them please?

alongside to berth?

Thank you sir.

will be more usufull to do same videos for ships with one prope;;er as a bulk carriers most of us we arent in ship with 2 propellers or bow thuster

Thank you for your time by doing this kind of videos, they are very interesting. I am new on this propulsion system, I will appreciate if you can tell please whats the difference between ASD and Azipod propulsion system. Thank you in advance.

Another awesome video. Will you ever make something about turning or sailing through bends on rivers and the effect of the current? Or something about going into locks and the interactions there?

Thanks excellent, perhaps the midship line should rather be the centre line.

I have face with a matter. For example: Vessel is altering the course to (S), initial heading is 000, rudder set to (S) 20, ship heading is turning to (S), rate of turn increasing, ship's speed is decreasing. I want to stop heading at 090 with most shortest of time. So, at which heading we need to turn rudder to (P)? Which angle of rudder will be applied? When do we need to return the rudder to midship? And ship's heading will stop at 090 with rate of turn zero upon rudder back to midship. Please help me if there are any formulars or rule of thumb or method of testing to point out a rule?

It would be very appreciated if more illustrations regarding to containers and other type ships.

When coming astern, how does the transverse thrust affect the pivot point?

Awesome! Please make one about the proper use of azipods, avoiding washing sosf. Great great content!!!

Excellent explanation of how to manage the pivot point. Very good. Tanks a lot of.

Thank you for your lecture, it is very helpful for naval architecture and marine engineering students like me!

Please share something about maneuvering with bowthrusters and pods combined in current like on rivers and how parallel indexing can be used properly for inland waterways such as the Rhine. Thank you!

Please do a video on parallel indexing and it's use on narrow channels and bends and how to read it. Many thanks for your effort and videos. Also, is the sammon tool available for purchase for private individuals and what the costs are? I see nothing about it on the website.

Please make something about Rhine or river navigation with pod vessels and sailing effects of current in downstream and upstream.

Thumbs up 👍🏽 from South African 🇿🇦 DUT

Thank you! Could you treat in a video how can a pilot appreciate or what landmark can be used to know when to start turning the ship in a tight place so that you have enough space. I know it s not possible to pinpoint exactly, but there has to be some standard.

Thank you! Could you treat in a video how can a pilot appreciate or what landmark can be used to know when to start turning the ship in a tight place so that you have enough space. I know it s not possible to pinpoint exactly, but there has to be some standard.

Please put a video regarding maneuvering on rivers and using the bowthrusters also. Stuff like entering a lock and best practices when sailing with radar on rivers would be awesome. A lot of Rhine navigators would love it. Thanks and keep it up!

Very nice what you are doing. Do you have anything prepared regarding river ships and river sailing? Like how to sail through narrrow bends effectively, entering locks sosf

Always great videos. Many thanks!!!

Thank you for explain this topik, 🙏

Hi The professor gave us lecture in our school Dut Which was very informative I wanted to ask the professor as if he has computer science background I always wanted to fuse my nautical studies diploma with programming which has been my hobby since high school

nice job!!!!

It is a blessing to have this sort of content for free! Keep up the good work!

How about a front rudder? Would it have similar effects to a front thruster?

if tugboat with ASD thruster, is this test necessary? even if it can rotate fully 360°

Would like to see the same for a Handy-sized bulk carrier, with trim by the stern, head, & even keel.

With pleasure waiting for new videos. Thank you for your job. Very useful for marine officers. Perfect explanations!

How much SAMMON software and how to buy

The external factors are more than this simulator allows... But we all know that simulators are just that

Awaiting for full tranining video.

How much a simualation system, sir?

Great video and explanations! Thank you very much! Going to watch next videos.

Nice , informative lesson! Thanks !

Great video mate! Thanks alot!

The confusing thing to me is how the pivot point shifts aft yet the turning diameter decreases. You would think the pivot point moves forward through the turn, increasing the turning arm (rudder to pivot point) creating more leverage to turn the vessel tighter.

Hooyer publication textbook describes these forces as “lateral resistance” forward and aft of the pivot point.

When water depth changes the pivot PT also changes.