The barge looks like it's using a twin screw setup w/ a single engine, given the way it maneuvers.
- Bart
Re: New Type Of Steam Barge (1920-1929) - British Pathe Foot
Posted: Wed Nov 01, 2017 1:10 am
by DetroiTug
One of my favorite steamboat movies. The Thames aboard a Salter steamer
Re: New Type Of Steam Barge (1920-1929) - British Pathe Foot
Posted: Thu Nov 02, 2017 2:46 am
by cyberbadger
Nice flick Ron.
So, I'm not sure I understand the pathe video.
If it's twin screw, are the screws underneath the exact center of the hull?
How does it turn about itself in the video? Or does it only appear that it is pivoting from the center?
-CB
Re: New Type Of Steam Barge (1920-1929) - British Pathe Foot
Posted: Thu Nov 02, 2017 6:19 am
by barts
cyberbadger wrote:Nice flick Ron.
So, I'm not sure I understand the pathe video.
If it's twin screw, are the screws underneath the exact center of the hull?
How does it turn about itself in the video? Or does it only appear that it is pivoting from the center?
-CB
It looks like one prop is forward and the other reverse, but I could easily be confused.
- Bart
Re: New Type Of Steam Barge (1920-1929) - British Pathe Foot
Posted: Thu Nov 02, 2017 3:12 pm
by DetroiTug
Pretty sure it has a drive shaft running forward and a gearbox driving a bow thruster. Look when they are spinning around, the prop turbulence can be seen off the port side bow.
-Ron
P.S. I hope this wasn't interpreted as any sort of attack ad hominem, ad vernacular etc.
Re: New Type Of Steam Barge (1920-1929) - British Pathe Foot
Posted: Thu Nov 02, 2017 3:54 pm
by cyberbadger
DetroiTug wrote:P.S. I hope this wasn't interpreted as any sort of attack ad hominem, ad vernacular etc.
I'll give you a break if you give me a break.
Even though bow thrusters can be incredibly effective I find them to be cheating in a way.
Very interested in odd balls like in the video, she is very maneuverable. Sometimes the world for steam launch in Hungarian is slightly mis-translated to "steam barge". That probably has to do with the fact that most Hungarian steam launches were river steam barges meant to go on the Danube and it's tributaries.
-CB.
Re: New Type Of Steam Barge (1920-1929) - British Pathe Foot
Posted: Thu Nov 02, 2017 7:20 pm
by DetroiTug
Break from what I'm not sure, but sure no problem...
Here we go again:
Quote: "Even though bow thrusters can be incredibly effective I find them to be cheating in a way. "
Cheating how? I've ran a lot of single screw boats with a rudder only, believe me, when there is a strong cross wind blowing and you're trying to maneuver in a tight space, you'll be wishing you had one. Talk about aggravating and embarrassing. Makes a good skipper look like a newbie.
Have a look:
-Ron
Re: New Type Of Steam Barge (1920-1929) - British Pathe Foot
Posted: Thu Nov 02, 2017 7:31 pm
by cyberbadger
DetroiTug wrote:Cheating how? I've ran a lot of single screw boats with a rudder only, believe me, when there is a strong cross wind blowing and you're trying to maneuver in a tight space, you'll be wishing you had one. Talk about aggravating and embarrassing. Makes a good skipper look like a newbie.
I 100% agree that bow thrusters are very effective. It's good though to learn how to do it the hard way though. A bowthruster can also hide a poor skipper. Definitely a current problem with finding qualified captains of larger vessels both navy and merchant.
Take a recent disaster, taking the lives of 7. They lacked basic seaman concepts of maneuvering their ship and lost control.
A secondary and unnoticed effect of the commander’s decision was the inadvertent transfer of steering to the console now designated to control the throttles.
The helmsman, confused and with apparently no control of the ship, said he had lost steering. The ship began turning to the left. As those on watch failed to understand the events unfolding around them, Commander Sanchez ordered the ship to reduce speed. Yet when the sailor operating the throttles tried to slow the destroyer, he managed only to reduce power to one of the propellers, meaning only one reduced speed while the other continued at regular propulsion. The mismatch lasted for more than a minute, causing the McCain to veer left and into the path of the Alnic MC, a 600-foot merchant ship.
The crew eventually managed to synchronize the ship’s steering and throttles, but it was too late.
ad hominem, ad vernacular etc.