At what temperature ..

Ohdrat

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Does Sea Ice form..? could sware I saw ice in the Cromarty Firth this morning.

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jimi

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<A target="_blank" HREF=http://www.arctic.noaa.gov/essay_wadhams.html> Found this article - quite fascinating</A>

<hr width=100% size=1>.. when's that again, but ..
 

Ohdrat

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Ahhh ha.. we have grey nilas in the Cromarty Firth and black nilas on our roads...

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ParaHandy

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Re: shock, horror ....

jings loads of uses and words for ice that i never imagined but no explanation of why sassenachs persist in putting ice in guid whisky .........

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claymore

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Re: shock, horror ....

But a piece in GlenFarclas, Glen Grant or Glen Drottar
Is a perfectly bearable way to drink Water

<hr width=100% size=1>regards
Claymore
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jimi

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Re: shock, horror ....

Never met guid whisky in ma life .. it a' reeks o' pish!

Gie me a rum and coke or eIrn BRu an' Voddie
cos whishky makes me boke



<hr width=100% size=1>.. when's that again, but ..
 

brianhumber

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Once had a cargo of HFO to deliver in the Baltic in Feb in the late 70s. Ice formed just as article said. Can remember the sea smoking as we met the first of the ice cakes. Later we were ramming the cracks ( this in a single skinned tanker!!) until it got so thick we had to wait for an icebreaker. You could see the plates flex in the ER as the broken floes ground past. All hands on deck to keep the steam on the cargo tanks to stop the HFO going solid, - happy days. Later we blacked out in Hamburg as the Ice mush blocked all the sea suction filters faster than the steam we were pouring into the sea suctions could melt it.

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starboard

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Troon marina water covered in very thin layer of ice this morning....Temp had gone to -10c in the central belt and -14c in the NW Highlands last night!!! I remember the sea in my home town of Lytham St.Annes freezing over in 1962!!

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Ohdrat

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Re: shock, horror ....

Drinking Whisky is never good a wonderful evil past time and corruptor of water!

P.S. At what temperature do you drink your voddie? and at what temp does it freeze??? What kind of ice does it form?
 

mpprh

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Hi

I lived on the Swedish coast for some years, so had considerable time to study the formation of sea ice !

Sea water freezes at lower temperatures according to salinity.

There are many things that influence the temperature.

As the sea only freezes on the surface, any currents will bring up warmer water to prevent freezing. This can be quite localised ........ some areas did not freeze whilst people drove cars on ice 30m away.

Some moorings have air bubblers on the seabed. The air rises to the surface with warmer water preventing ice formation.

And the sea ice may not always be saltwater ! The best ice is formed as follows :
Sea freezes with a rough surface,
A good fall of snow covers the ice.
Air temperatures go above 0C, then back below 0C (to about -27C sometimes)
You now have a mirror smooth layer of fresh water ice on the sea.

Other influences are depth and inflow of fresh water.

Peter




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G

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Depends on salinity and mineral content.



<hr width=100% size=1>Nigel ...
Bilge Keelers get up further ! I came - cos they said was FREE Guinness !
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G

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HFO.....Baltics ...

Reversed trade now ..... millions of tons of HFO to the world FROM Baltic's now.


<hr width=100% size=1>Nigel ...
Bilge Keelers get up further ! I came - cos they said was FREE Guinness !
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ParaHandy

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Re: shock, horror ....

you'll no get any sense outta him, ohdrat. IrnBru's got so much sugar in it that the vodka's fermented to neat alcohol ...

agree with you, drinking whisky is a wonderful pastime and best without water .. wud that be whit you were trying to say?! .........

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Rowana

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Gosh Brian, that brings back memories!

I was on tankers in the early 70's and spent a lot of time in the Baltic, summer and winter. What I remember was the bloddy noise down below as the ice scraped along the side of the hull. Whe we got in and discharged, the Mate had all the deck crew out ot the jetty with long handled rollers and red lead, as the hull was completely back to shiny metal where the ice had scraped it.

It was totally different in the summer, absolutely wonderful. I would love to go back there and cruise round in a yacht. Anybody going there and looking for crew?

Jim

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G

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Too late mate ...

I live and work here ...... with trips back to UK.

AND I'm lucky enough to have a UK boat, a Latvian boat and an Estonian boat ...... so never far from my love of boating !!


<hr width=100% size=1>Nigel ...
Bilge Keelers get up further ! I came - cos they said was FREE Guinness !
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brianhumber

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Re: HFO.....Baltics ...

How times change - Baltic coasting was one of my favourite summer trips, Loading in Hamburg, keil canal, old ships with B&W opposed pistons, all steam recip pumps and DC generators, cargo discharge rates varied according to how many nights ashore was wanted, long summer nights ashore.
The HFO comes from the Russian/Baltic state refineries now I presume?


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brianhumber

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You have reminded me of noise, the Indian crew hated it, Serang's mob on deck were frozen, Tindal and his gang did not like being down below. I can still visulize the reflection of the ships side plates painted surface moving under the pressure of the Ice outside.

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