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-   -   Carrier Question (https://www.pprune.org/military-aviation/634659-carrier-question.html)

Imagegear 9th Aug 2020 07:17

Carrier Question
 
Having just watched a video discussing Sterling engines and the Gotland Class of submarines, I noticed this unusual offset bow wave on the Carrier at the 10:55 point. (Almost at the end)



https://cimg1.ibsrv.net/gimg/pprune....4de443e8fc.jpg

Anyone care to comment ?

Mods - please move if appropriate.

IG

sunnybunny 9th Aug 2020 07:46

may be an outlet pipe or hose dumping water over the side?

If it was a periscope I would expect water to be thrown forward as well as sideways.

I have seen images from a perisope between a frigate propellors but I don't think a skipper would risk his boat that close to the bow.

Not sure what the underwater speed of the sub is but the carrier seems to be cracking on.

piperpa46 9th Aug 2020 08:08

When it pans round, right at 10:57, just before the scene change, you can see it's water being discharged from up high on the bow.
​​bow.
​​​​​​

piperpa46 9th Aug 2020 08:11

https://cimg7.ibsrv.net/gimg/pprune....9b66b4d716.jpg
You can see a similar affect on this platform, from the various discharges.

rattman 9th Aug 2020 09:10

Thats USS america, guessing it some form of testing / acceptance trial. If you go .25 playback or frame by frame you can see what looks to be high pressure discharge as mentioned by above poster

Imagegear 9th Aug 2020 09:16

Yup, can see it now - just looks a little odd so far up and not the Anchor flat.

IG

Hot 'n' High 9th Aug 2020 16:19

Imagegear, absolutely no idea what it is but it seems fairly constant judging by this link:-

- well, at least while this sequence was recorded. Your clip appears to the same as the 0:25 - 0:28 point in my link and, at 0:14, the flow appears to stop for a second or so. Rest of the time it seems fairly constant. Someone swabbing something down? They do whatever "swabbing" is in the Navy I understand!!

:ok:

As I say, absolutely no idea what is actually causing it! H 'n' H is clueless .... again! ;)

sandiego89 9th Aug 2020 17:16

Multiple deck and sponson scuppers (drains) go to common discharge holes. I would not be surprised to see water sloshing about during builders trials, especially with rapid rudder movements where free-standing water gets thrown all about.

NutLoose 9th Aug 2020 17:39

They weren’t called the heads for nothing, ;)

Imagegear 9th Aug 2020 20:01

In my experience of working at sea I never encountered large volumes of standing water being drained under clear skies almost at flight deck level. However it is possible that a fire hydrant or pumps were being tested but this would not be a regular occurrence.

H & H - No clue here either. Someone may be along shortly to fill in the gaps.

IG


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