Just pictures

[Kukri]

That high, narrow, counter is rather distinctive. I’m sure I’ve seen her but I can’t place her.

 

[dombuckley]

P1070778a by Roger Gaspar, on Flickr

Anyone know them. They might want a copy of this and others.

Looks like Peter Herbert and "Lily", one of the GRP smack yacht replicas that Tyrrell's moulded. But no contact details I'm afraid.

 

[Aquaboy]

 

[Kukri]

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I like the one of St Botolph, Iken, from Iken Cliff at dawn.

 

[Aquaboy]

I was ghosting away from Snape

 

[tillergirl]

I guess the subject of my image is an Old Gaffer member. I'll try them

 

[johnalison]

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Try cutting the exposure a bit. I take most of mine at -2/3 of a stop and leave my camera at this setting. you will get stronger colours and cleaner whites.

 

[Aquaboy]

I sail alone so camera on auto (a basic digital) and its why its always calm in my pics. Then I use snipping tool to make the file small enough to upload so quality drops.

 

[johnalison]

I sail alone so camera on auto (a basic digital) and its why its always calm in my pics. Then I use snipping tool to make the file small enough to upload so quality drops.

That's fine as long as you are happy, but you might like to do a little adjustment. Some auto modes will allow you to do this, though not on my 'toy' Canon. I have taken the liberty of partly adjusting your shot of Wivenhoe, because I live there. If you look at the histogram below, you will see a gap on the left, showing that blacks are being given as greys, and on the right a column where all the highlights have piled up and information is lost. If you look at #135 you can see how good the lifeboat's wake looks with all its tones.

 

[Habebty]

Who is doing the towing

 

[Kukri]

You can do that with a “water tractor” tug. She is the stern tug; she makes fast and the ship tows her to the point where she is wanted. Since a water tractor, unlike a conventional tug cannot be “girted” and capsized, it’s perfectly safe, and when instructed by the Pilot she can immediately apply power in any direction.

 

[Habebty]

 

[Habebty]

You can do that with a “water tractor” tug. She is the stern tug; she makes fast and the ship tows her to the point where she is wanted. Since a water tractor, unlike a conventional tug cannot be “girted” and capsized, it’s perfectly safe, and when instructed by the Pilot she can immediately apply power in any direction.

Thanks for that, I did wonder!

 

[Kukri]

Thanks for that, I did wonder!

“Water tractor” tugs use either azimuthing thrusters or the Voith Schneider system:

Voith Schneider Propeller - Wikipedia

 

[michael_w]

She's got a fair bit of heel on though.

 

[Tomahawk]

You can do that with a “water tractor” tug. She is the stern tug; she makes fast and the ship tows her to the point where she is wanted. Since a water tractor, unlike a conventional tug cannot be “girted” and capsized, it’s perfectly safe, and when instructed by the Pilot she can immediately apply power in any direction.

What stops her from girting?
Pull sideways and surely she will go over?

OK the master can apply lots of power towards the tow and take the strain off the line at the turn of a dial but does that necessarily make girting impossible?

 

[Kukri]

What stops her from girting?
Pull sideways and surely she will go over?

OK the master can apply lots of power towards the tow and take the strain off the line at the turn of a dial but does that necessarily make girting impossible?

Position of the hook. A single or twin screw conventional tug must have her hook (or winch if she’s a seagoing tug) roughly amidships so she can alter course when towing. A water tractor can have the hook well aft or well forward (it doesn’t matter - she can exert her full bollard pull in any direction) so that an unfair load will make her swing into line with it.

 

[philiphurst]

'Duet' at Marconi SC, River Blackwater.

 

[JustinDavidson]

cool

 

[Aquaboy]

Conventional tugs usually tow with a pivoting hook mounted on the centre line. This was brought in to reduce capsize risk. As the tow gets out of line so the hook swings to the side which tends to lift that side of the tug and counteracts the heeling especially if the bow of the ship is much higher.

Tractor tugs tow on a winch which is controlled from the Bridge so they can constantly adjust the pull and let go if things go haywire.......which they do......