More manoeuvring tutorials please! Whenever my wife/family go fishing or on charter holidays I'm always the boat guy and I'm always expected to manoeuvre novel boats (albiet small, touristy leisure boats) in novel situations with no mistakes, so I find this sort of content really useful. My own boat I can manoeuver on pure muscle memory, but for the novel situations I like to have an intuitive understanding of the mechanics of manoeuvring under power.
Here in Argentina we have many rivers with ports were large ships load cereals. This turn maneuver is done. The main difference is that you always have a downstream current (up to 3 knots) that is stronger on the center of the river than on the sides so it affects bow and stern in a different form depending which part of the ship is closest to the center
After much trial and error, I learned this the hard way in a 62’ narrow boat. No real current but plenty of windage. A few weeks ago, aboard ‘Britannia’ in Kiel, I watched in awe as the thousand foot ship was rotated 180 degrees in a 1200 foot wide channel.
Great video but In the example right handed propeller when going ahead should bring the vessel to port not to starboard since the rotation of the blades are in clock wise direction
Because in astern thrust , no water strikes the rudder. As the propeller is turning anti clock wise, water is pushed from propeller towards ahead. So any angle on the rudder won't do anything.
@@shashiranjan3626 but surely as soon as the vessel starts moving backwards water is now flowing over the rudder? Ok no where near as much as if the props were pushing water over the rudder but it must still do something, right?
@@alexanderwatson9845 correct, but depending on the type of vessel and environmental considerations like current you may have to put on a considerable amount of way to gain rudder authority which will be problematic in a confined space.the prop walk referenced is there to maintain the turn not initiate it so is generally enough and keeps the maneuver slow and controlled.
More manoeuvring tutorials please! Whenever my wife/family go fishing or on charter holidays I'm always the boat guy and I'm always expected to manoeuvre novel boats (albiet small, touristy leisure boats) in novel situations with no mistakes, so I find this sort of content really useful. My own boat I can manoeuver on pure muscle memory, but for the novel situations I like to have an intuitive understanding of the mechanics of manoeuvring under power.
Here in Argentina we have many rivers with ports were large ships load cereals. This turn maneuver is done. The main difference is that you always have a downstream current (up to 3 knots) that is stronger on the center of the river than on the sides so it affects bow and stern in a different form depending which part of the ship is closest to the center
After much trial and error, I learned this the hard way in a 62’ narrow boat. No real current but plenty of windage. A few weeks ago, aboard ‘Britannia’ in Kiel, I watched in awe as the thousand foot ship was rotated 180 degrees in a 1200 foot wide channel.
Best explanation ever, thank you very much!
Emergency response series in the future? That would be helpful to a lot of students.
Except for the propeller walk, I have taught myself all this while playing video games throughout the years
Great video but In the example right handed propeller when going ahead should bring the vessel to port not to starboard since the rotation of the blades are in clock wise direction
The rotation which matters is when running astern. Ahead you can ignore propwalk.
In the example, why don't you bring the rudder hard over to port whilst the engines are reversed?
Because in astern thrust , no water strikes the rudder. As the propeller is turning anti clock wise, water is pushed from propeller towards ahead. So any angle on the rudder won't do anything.
@@shashiranjan3626 but surely as soon as the vessel starts moving backwards water is now flowing over the rudder? Ok no where near as much as if the props were pushing water over the rudder but it must still do something, right?
@@alexanderwatson9845 correct, but depending on the type of vessel and environmental considerations like current you may have to put on a considerable amount of way to gain rudder authority which will be problematic in a confined space.the prop walk referenced is there to maintain the turn not initiate it so is generally enough and keeps the maneuver slow and controlled.
@@jeredgaskell2422 so in layman's terms you'd have to go too fast to actually start turning?
Excellent advice
ОК. Thanks,
Great video once again!
Thanks so much salute additional learning for me
Would be great to see parallel docking video tutorial, thank you!
Pass
That's so cool!
Ships with bow thrusters: *_Snickers_*
Tnq
Huh more interesting naval facts that I'll never use :)