Didn't do it on purpose?

[tixntox]

https://www.bbc.co.uk/news/uk-59898569

I am not filled with confidence when seeing the programme or this report!

[earlofsodbury]

I'd imagine it's a pretty routine incident - large underwater vessel + 100s of metres of cable: amazing they don't get tangled-up more often.

[Saint-Just]

Old news.

[blackal]

This sort of thing happens a lot more often than thought (or reported).

I worked with a guy (non- RN) who was out on a short patrol on a UK nuclear attack sub, which when returning to the Clyde - came up under a fishing vessel (without sinking it) He was in the command room.

While the Commander was barking orders to dive - my colleague (instead of standing well back and remaining quiet) - was shouting 'sod that! Surface, Surface!'

That was the end of those trips...................

[tixntox]

Old news.

Nobody said it was new!

[Saint-Just]

Nobody said it was new!

Indeed nobody did. And nobody mentioned it you did, today. Which probably means it really isn't such a big deal, considering it wasn't headline news and sunk from the homepage quite quickly, unlike, say, the situation on Ukraine eastern border.
As has been said earlier, it genuinely happens fairly regularly.