US Sub hits something?

[Countdown]

https://www.bbc.co.uk/news/world-us-canada-5883833...

I'd be amazed if this was a grounding or a collision with a natural object. So did it get too close to a chinese vessel?

If 11 sailors were injured that suggests more than a glancing blow as well.

[0ddball]

They have sonar that can hear a crab fart, but didn't detect an object big enough to rattle the whole sub?

[dundarach]

All sorted!

[FNG]

Countdown said:

So did it get too close to a chinese vessel?

Countdown said:

To be fair underwater mountains don't make noises.

Do Chinese subs masquerade as rocky outcrops then?

[Scabutz]

Maybe they were trying to get away from a torpedo and the captain misjudged the turn at Massif

[Countdown]

FNG said:

Countdown said:

So did it get too close to a chinese vessel?

Countdown said:

To be fair underwater mountains don't make noises.

Do Chinese subs masquerade as rocky outcrops then?

D'oh!! Apologies - complete brain fade. I was getting confused with the USS San Francisco in 2006.

[anonymous-user]

Scabutz said:

Maybe they were trying to get away from a torpedo and the captain misjudged the turn at Massif

One ping only!

[eharding]

I think that if they were cruising at speed when submerged they're reasonably acoustically blind to whatever is directly ahead, hence the occasional encounters with uncharted sea-mounts, deaf whales, semi-submerged containers, mermaids etc. The paint-swapping exchanges with the opposition tend to happen when they're trying sneak up on each other in church-mouse mode, and are low-speed affairs.

[pquinn]

0ddball said:

They have sonar that can hear a crab fart, but didn't detect an object big enough to rattle the whole sub?

How much noise does a rock or drifting submerged container make? If you aren't running active sonar (and shouting to the world about where you are) you'd never know it was there.

Collisions happen; sometimes it's cockup, sometimes old charts, sometimes it's not your fault.

[FourWheelDrift]

0ddball said:

They have sonar that can hear a crab fart, but didn't detect an object big enough to rattle the whole sub?

HMS Vanguard collided with the French sub Le Triomphant in 2009 whilst on a joint operation so they even knew they were in the same area. The French Navy said that they "face an extremely simple technological problem, which is that these submarines are not detectable".

[HarryW]

As said, not common but not unheard of to hit rocks. This was in 2005;
https://commons.wikimedia.org/wiki/File:US_Navy_05...