No, it's a tango swing. Actually, back in the 80s, some people used to refer to them as "American swings". I had a particular friend that used to do that. It drove me nuts. Everybody in South Kilburn called it a tango swing, but no, he had to call it an American swing !
I used to take great delight in shinnying up the telegraph pole and crawling to the centre of the pole that goes across and attaching two ropes that the kids used to play a game called 'tango' on. Considering a few months previous I was scared of heights, it was quite a progression and I was never scared in the 3 years I used to shinny up there. About 3~4 years ago, I was doing some repairs to a tango at a friend's adventure playground and it was a similar height. I went up on a ladder and I was so scared, I had to tie the ladder to the pole and hang on for dear life ! It was damn windy too. But I remember thinking that 15~20 years previous, I had no fear. The way I am in that photo, nothing on this earth would get me in that position again ! I've done my stint as a superhero. I'm in retirement now !!