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Flying the Unfriendly Skies

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RTH10260
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Re: Flying the Unfriendly Skies

#126

Post by RTH10260 »

AndyinPA wrote: Sun May 08, 2022 10:52 pm I'm not sure if it's 100 percent true, but pilots often come on the boat/ship so that it's not actually the captain who is taking the boat/ship through the canal.
True that, apart that a pilot never touches any controls but only gives orders in place of the captain.
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Re: Flying the Unfriendly Skies

#127

Post by AndyinPA »

:thumbsup:
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Re: Flying the Unfriendly Skies

#128

Post by keith »

In addition, too, also...

If the side thrusters are equally applied on both sides then there will be a 'water cushion' keeping the ship equally spaced from the lock walls on both sides.
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Re: Flying the Unfriendly Skies

#129

Post by Sam the Centipede »

keith wrote: Mon May 09, 2022 3:00 am In addition, too, also...

If the side thrusters are equally applied on both sides then there will be a 'water cushion' keeping the ship equally spaced from the lock walls on both sides.
:think: Are you sure?

Some (many? most?) bow thrusters are of a "tunnel" type with inlets/outlets on opposite sides so the pump or screw moves water from one side to the other to create the sideways force so they cannot propel in both directions simultaneously.

With azimuth thrusters one could theoretically do what you suggest, but I think it would be destabilizing as iintroduces more energy and more variability into the system.

Of course there is a significant cushioning effect from the water in the narrow gap between hull and wall, but agitating that water isn't going to help.

The Panama Canal has paired locks and ships traversing them simultaneously in the same direction must stagger their departures because there is a nasty hydrodynamic effect where two ships moving parallel are pulled towards each other, and it really can cause problems.

However, this aspect of marine operations isn't my area, so please feel free to correct my errors!
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Re: Flying the Unfriendly Skies

#130

Post by keith »

Sam the Centipede wrote: Mon May 09, 2022 4:11 am
keith wrote: Mon May 09, 2022 3:00 am In addition, too, also...

If the side thrusters are equally applied on both sides then there will be a 'water cushion' keeping the ship equally spaced from the lock walls on both sides.
:think: Are you sure?

:snippity:

However, this aspect of marine operations isn't my area, so please feel free to correct my errors!
No correction from me, I know nothing, and your counter to my assertion makes sense, so...

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Re: Flying the Unfriendly Skies

#131

Post by bill_g »

RTH10260 wrote: Sun May 08, 2022 11:53 pm
AndyinPA wrote: Sun May 08, 2022 10:52 pm I'm not sure if it's 100 percent true, but pilots often come on the boat/ship so that it's not actually the captain who is taking the boat/ship through the canal.
True that, apart that a pilot never touches any controls but only gives orders in place of the captain.
This is true as well for the Columbia Riverboat Pilots Assoc navigating large vessels to and from Portland and the Pacific. The regular crew are at the helm. The pilot gives orders.
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Re: Flying the Unfriendly Skies

#132

Post by Sam the Centipede »

bill_g wrote: Mon May 09, 2022 8:29 am
RTH10260 wrote: Sun May 08, 2022 11:53 pm
AndyinPA wrote: Sun May 08, 2022 10:52 pm I'm not sure if it's 100 percent true, but pilots often come on the boat/ship so that it's not actually the captain who is taking the boat/ship through the canal.
True that, apart that a pilot never touches any controls but only gives orders in place of the captain.
This is true as well for the Columbia Riverboat Pilots Assoc navigating large vessels to and from Portland and the Pacific. The regular crew are at the helm. The pilot gives orders.
It's true in most ports around the world: masters of ships above a certain size who don't hold a pilotage exemption certificate for that port must take on a pilot. Obviously masters of ferries and similar frequent visitors will usually hold those certificates.

Technically it's not correct that the pilot gives orders. The pilot advises. The master (or senior bridge officer) remains in command can still be held responsible if something bad happens.
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Re: Flying the Unfriendly Skies

#133

Post by Volkonski »

“If everyone fought for their own convictions there would be no war.” ― Leo Tolstoy, War and Peace
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Re: Flying the Unfriendly Skies

#134

Post by Suranis »

Because of a "Computer Glitch" apparently.
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Re: Flying the Unfriendly Skies

#135

Post by RTH10260 »

British travellers will enjoy the consequences of Brexit. EU legislation provides for extensive consumer protection in the airline industry. The very sovereign UK not any longer.
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Re: Flying the Unfriendly Skies

#136

Post by Volkonski »

“If everyone fought for their own convictions there would be no war.” ― Leo Tolstoy, War and Peace
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Re: Flying the Unfriendly Skies

#137

Post by Volkonski »

“If everyone fought for their own convictions there would be no war.” ― Leo Tolstoy, War and Peace
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Re: Flying the Unfriendly Skies

#138

Post by Volkonski »

“If everyone fought for their own convictions there would be no war.” ― Leo Tolstoy, War and Peace
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Re: Flying the Unfriendly Skies

#139

Post by Volkonski »

“If everyone fought for their own convictions there would be no war.” ― Leo Tolstoy, War and Peace
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Re: Flying the Unfriendly Skies

#140

Post by Volkonski »



Happily our younger daughter's flights to Long Island today were not cancelled. :biggrin:
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Re: Flying the Unfriendly Skies

#141

Post by sad-cafe »

Volkonski wrote: Sat May 28, 2022 3:53 pm
Delta lost my luggage for a 7 day cruise.

I am fighting with them now.

They want receipts for everything that was in there---who keeps receipts once you know you won't be returning the clothes?

or something that is a couple years old?????????
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Re: Flying the Unfriendly Skies

#142

Post by Lani »

That's a lot worse then my recent flight experience. I hope you get your luggage soon.

Since masks were no longer required, I've flown twice to Honolulu. Became ill after both. I woke feeling very tired this morning. Now my fever is 99.9, and I'm feeling very, very achy. Can't eat without vomiting. Already emailed that I'm on sick leave.
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Re: Flying the Unfriendly Skies

#143

Post by Dave from down under »

:crying:
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Re: Flying the Unfriendly Skies

#144

Post by AndyinPA »

I'm so sorry, Lani. :bighug:

I have to fly to Montreal on Labor Day Weekend. We have to fly through Philly. I am trying to find an alternate way to get there, but nothing else seems to work. Amtrak has suspended service because of Covid. Even though that would take two days, I would do it if I could. We fly back from Chicago. That's simply a short, direct flight, but even then I am tempted to just book the train back. The airfare was free, so I lose nothing.

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Re: Flying the Unfriendly Skies

#145

Post by Volkonski »

“If everyone fought for their own convictions there would be no war.” ― Leo Tolstoy, War and Peace
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Re: Flying the Unfriendly Skies

#146

Post by raison de arizona »

That's a lot of pilots. SW employs ~8k pilots, so this represents a sizable percentage.
Fifty Shades of Whey @davenewworld_2 wrote: Over 1,000 pilots for Southwest Airlines are protesting outside Love Field in Dallas for being overworked and understaffed
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Re: Flying the Unfriendly Skies

#147

Post by Whatever4 »

sad-cafe wrote: Sun Jun 19, 2022 11:50 pm
Delta lost my luggage for a 7 day cruise.

I am fighting with them now.

They want receipts for everything that was in there---who keeps receipts once you know you won't be returning the clothes?

or something that is a couple years old?????????
That’s one of the perks of doing most of my clothes shopping online. Tan linen pants? Oh, that was 2019 J. Jill, print out the invoice. Etc.
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Re: Flying the Unfriendly Skies

#148

Post by Phoenix520 »

:yeahthat:
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Re: Flying the Unfriendly Skies

#149

Post by sad-cafe »

Whatever4 wrote: Tue Jun 21, 2022 8:20 pm
sad-cafe wrote: Sun Jun 19, 2022 11:50 pm
Delta lost my luggage for a 7 day cruise.

I am fighting with them now.

They want receipts for everything that was in there---who keeps receipts once you know you won't be returning the clothes?

or something that is a couple years old?????????
That’s one of the perks of doing most of my clothes shopping online. Tan linen pants? Oh, that was 2019 J. Jill, print out the invoice. Etc.

yea, that is my task tomorrow " :brokenheart: :crying:
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Re: Flying the Unfriendly Skies

#150

Post by Volkonski »

“If everyone fought for their own convictions there would be no war.” ― Leo Tolstoy, War and Peace
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