TIL that a French and British submarine collided in 2009. They both moved so quietly that they could not detect each other and accidentally happened to run into each other.
TIL that a French and British submarine collided in 2009. They both moved so quietly that they could not detect each other and accidentally happened to run into each other.

en.wikipedia.org
HMS Vanguard and Le Triomphant submarine collision - Wikipedia

The ocean is fantastically huge. This had to have happened in some standard/used channels of travel for them to be close enough to each other. Amazing.
Of course, the Brits were on the wrong lane.
The ocean is huge, but these countries are neighbors, it's not like a Canada submarine colliding with a south African one...
Even the English channel is vast in comparison to even the largest ships. It's still ridiculously coincidental that this could happen.
Or they were following the same Russian sub.
Of all the fishbowls in all the world...