Winter, it would seem, is well and truly here. I am basing this purely on the heinous amount of snow outside. Of course, this isn’t entirely unexpected – it’s been brass-monkeys cold for a while now. I’m not a religious guy, but on Saturday, with my hands purple and aching with cold, I had cause to thank God for Primark and their inexpensive gloves. Later that day I took the terrible photo above, showing that City Road Basin in Islington was partially frozen.
Back in “The Day,” (i.e. up until about the mid-20th century) frozen canals and rivers were a serious issue. Canals in particular, which don’t flow like a river, were vulnerable to icing up. This had obvious economic consequences for trade, particularly before the advent of decent roads and railways. The low-tech but cunning solution was to apply brute force and a certain amount of wiggling. This was achieved using the canal icebreaker, or ”rocker,” as they were known in the business.
The rocker was like a shortened narrowboat, but instead of a cargo area, it simply had a long bar. The bow sloped upwards. A team of men would stand either side, holding on to the bar. When the rocker came to ice, the bow would ride up on top of the ice and the men would rock back and forth to break it (hence the vessel’s nickname). This was usually sufficient for all but the most Arctic conditions in London.
[PARENTHESIS: Did you know that the word "Arctic" comes from the Latin word for polar bear, "arcta." Arctic literally means "place where there are polar bears." Antarctic means "place where there are no polar bears." Now you know.]
Now, earlier this year I wrote about the frost fairs that were held on the Thames when it froze over in winter. The idea of the river freezing over sounds like the sort of thing that went out with breeches and snufftaking. In fact, the end of the frozen Thames can be put down to several factors. Firstly, and perhaps most importantly, the river flows that much faster these days. The construction of the Embankments north and south of the river has constrained it, which, if you recall your school physics lessons, speeds the flow up. The old London Bridge, which had lots of arches and waterwheels to slow things down, has been demolished and replaced twice – the new one allowing freer flow and also, interestingly, possessing heating elements for the road over it.
Industry since the dawn of the steam age has discharged a lot of hot water – and other products – into the Thames, raising the overall temperature. I would imagine residential and commercial premises, with their heating and lighting, are contributing factors as well – but I’m no scientist.
And down in South London, the draining of the Lambeth marshes (commemorated with the street called Lower Marsh in Waterloo) has meant that ice no longer forms along the banks there, preventing the freeze from getting a foothold, or whatever it is that freezes do.
That being said, I was surprised to learn how recent the last big freeze was. In fact, it was 1963. This was the coldest winter since 1740. Roads and railways were, as you might imagine, choked up. Rivers fared little better, and even the sea was frozen at Margate and Chatham (the Navy employed an icebreaker at the latter). The Thames, as you can see above in this view at Windsor, was no exception. At Oxford, one chap managed to drive a car across the river. The docks in London iced up like many others, driving prices of imported goods up. Kingston saw ice skating on the river, and bicycle races were held at Hampton. Below right may be seen boas iced up near Hampton Wick.