Posted on 01/06/2022 5:13:45 PM PST by BenLurkin
HMS Northumberland had been tracking the submarine when it hit the ship's sonar - a piece of equipment being trailed hundreds of metres behind it.
The incident, in late 2020, was captured by a television crew filming a documentary.
A UK defence source said it was unlikely the collision was deliberate.
HMS Northumberland was searching for the submarine in the Arctic Circle after it disappeared from the ship's radar, according to Channel 5, which was filming for its Warship: Life at Sea series.
The MoD said the frigate had located the hunter-killer submarine using the towed array sonar - a long tube fitted with sensitive hydrophones to listen under the water.
(Excerpt) Read more at bbc.com ...
And the world ended that day...sarc
Crazy Ivan
Watch the Bedford Incident.
Great old movie about this sort of cat and mouse.
Good flick....
It says the frigate initially picked up the sub on the towed sonar. There are two main benefits for towed sonar. One is to get the sensitive hydrophones away from the inherent noise of the ship. The other is to tow the array below the surface layer - somewhat deep - because noise (sub noise) from below the layer can reflect off the surface layer - thus being inaudible to surface sensors.
Presumably (?) the sub was running relatively deep. Not much reason for modern nukes to surface. A detection off the towed array would lead you to believe the sub was down at least several hundred feet.
But then there was a periscope sighting and a radar contact. Why would the sub come up that shallow? Even if it already was relatively shallow, why show your periscope - a visual and radar target? Maybe the sub wanted visual confirmation of what their sonar was telling them? Maybe they don't have a good sound signature, didn't recognize the frigate, and wanted to associate the signature with the ship.
If the frigate had the sub on sonar and radar, there would be no real reason to close on it. Particularly if you have your towed sonar out. British Captains don't tend to make those kinds of mistakes. I'd bet the sub initiated the close pass. Maybe it didn't count on a towed array. Kind of like maybe the sub wanted to get close and collect a real good signature. Odd because the Type 23 frigates have been around for 30+ years, and this particular frigate for nearly that many. They should know what they sound like just about as well as the Royal Navy themselves.
Why would the sub be so interested in a fairly routine frigate that they'd go up to take a look and then make a close pass? The usual nuke response to a potential surface detection is to go deep, slow, and quiet and simply disappear. Just seems odd all around.
Fortunately a work of fiction with the acting of folks like Sidney Poitier and Richard Widmark giving it the dramatic edge.
Yes...it has always been one of my favorites.
Was there a gentlemanly old German commodore on board, I wonder? Hunting with the hounds, but his heart is with the fox?
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