[PSUBS-MAILIST] Personal_Submersibles Digest, Vol 51, Issue 30

Sun Sep 10 22:39:05 EDT 2017

Hi River,
I'm pretty sure that the sub they are calling Cyclops 1 is the "sister" hull to antipodes- extra hull parts from PC 1501. 
The Cyclops 2 sounds like it is being fabricated by the same house that made the composite hull for Chris Welch's sub (composite tube with either aluminum, titanium or quartz hemispheres on the ends.)
Composites are tricky. Not much is known about the number of cycles they can handle. Also stress release at the hull/ dome interface can be a huge problem. For many years, it was thought that silicone grease was the best anti-friction agent for deep sub viewports. Turns out it is actually the worst.
Greg Cottrell

      From: River Dolfi via Personal_Submersibles <personal_submersibles at psubs.org>
 To: personal_submersibles at psubs.org 
 Sent: Sunday, September 10, 2017 9:21 PM
 Subject: Re: [PSUBS-MAILIST] Personal_Submersibles Digest, Vol 51, Issue 30

Greg,
I've been following OceanGate for a while. I've also been sending them applications for open engineering and technician positions for almost a year now. They own several subs:Suds- a K350 with steel MBT's
Antipodes - Ex PC1501 with a 2nd dome mounted to the stern (an idea I really like)
Cyclops 1 - The "Prototype" for Cyclops 2. Don't know the entire story about that one.
Cyclops 2 - A deep diver under construction with a carbon fiber composite hull (!!!) and titanium heads

A polymer composite hull sounds pretty dubious to me. I just don't see the benefit. There has never been, and never will be, such a thing as a "lightweight" submarine. And from what little materials characterization work I've done, I know that he could have built a fleet of steel subs for the price of one plastic one.

On Sun, Sep 10, 2017 at 7:51 PM, via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

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Today's Topics:

   1. Re: dive day (irox via Personal_Submersibles)
   2. Re: dive day (hank pronk via Personal_Submersibles)
   3. cyclops sub (Antoine Delafargue via Personal_Submersibles)
   4. Re: cyclops sub (james cottrell via Personal_Submersibles)

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Message: 1
Date: Sun, 10 Sep 2017 15:06:36 -0700 (GMT-07:00)
From: irox via Personal_Submersibles <personal_submersibles at psubs. org>
To: Personal Submersibles General Discussion
        <personal_submersibles at psubs. org>
Subject: Re: [PSUBS-MAILIST] dive day
Message-ID:
        <24693958.8722.1505081196912@ elwamui-milano.atl.sa. earthlink.net>
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Message: 2
Date: Sun, 10 Sep 2017 22:28:03 +0000 (UTC)
From: hank pronk via Personal_Submersibles
        <personal_submersibles at psubs. org>
To: irox via Personal_Submersibles <personal_submersibles at psubs. org>
Subject: Re: [PSUBS-MAILIST] dive day
Message-ID: <816862390.6459949. 1505082483864 at mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"

 Ian,I dive completely alone. ?I now tow a inflatable tender with a dive flag, so it is ver visible. ?The boaters stayed very clear today. ?Before I dive, I call my wife with a preset time to call when I return to the surface. ?If I am late she initiates an emergency plan. ?I would prefer to dive with a support crew, but ?there are no interested people. ?Hank
    On Sunday, September 10, 2017, 4:06:50 PM MDT, irox via Personal_Submersibles <personal_submersibles at psubs. org> wrote:

 #yiv4778718134 #yiv4778718134 -- DIV {margin:0px;}#yiv4778718134
Hi Hank,
thanks for the trip report. As the owner of a non-op sub I appreciate folks sharing their trip reports regardless of length. :)
Are you diving with a support crew ?(surface or land) at all?
If you are diving solo, are you taking any extra precautions?
Thanks!? Ian.

-----Original Message-----
From: hank pronk via Personal_Submersibles
Sent: Sep 10, 2017 2:54 PM
To: Alan via Personal_Submersibles
Subject: Re: [PSUBS-MAILIST] dive day

 Alan,The thermal cline is at about 40 feet and I was on the bottom at 100 feet. ?It is expected ?this time of year. ?I just figured with no rain for two months it would be better. ?At least it only costs 50 dollars for a trip with a dive, sorry Hugh ;-)Hank
    On Sunday, September 10, 2017, 3:46:59 PM MDT, Alan via Personal_Submersibles <personal_submersibles at psubs. org> wrote:

 Hank,I haven't dived much in lakes; but a couple of years ago I was scuba diving in a?90 ft deep quarry, & hit a thermocline at about 30ft. I couldn't see my hand in?front of my face. I saw a dark line rise up my mask as I descended into it.?Some sort of algal bloom!Can it clear up deeper down if you persevere through it?Alan
Sent from my iPad
On 11/09/2017, at 8:48 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs. org> wrote:

Today I went to my favourite lake for a dive, I motored out to 100 feet depth and sank. ?The visibility was so bad, I could not see 2 feet. ?I couldn't even see my compass in front of the dome. ? I just surfaced and went home ;-( ?Hank

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Message: 3
Date: Mon, 11 Sep 2017 00:56:26 +0200
From: Antoine Delafargue via Personal_Submersibles
        <personal_submersibles at psubs. org>
To: Personal Submersibles General Discussion
        <personal_submersibles at psubs. org>
Subject: [PSUBS-MAILIST] cyclops sub
Message-ID:
        <CA+v+SjpbmSPaOLV2sP2izMvm- kqm=OpKftSn=+NW80f65osxog@ mail.gmail.com>
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Hello all
would be nice to have Stockton on this list...

https://www.bloomberg.com/ news/features/2017-09-07/it-s- brutal-to-get-to-the-ocean-s- depths-this-minisub-will-take- you-there

regards

Antoine
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Message: 4
Date: Sun, 10 Sep 2017 23:51:30 +0000 (UTC)
From: james cottrell via Personal_Submersibles
        <personal_submersibles at psubs. org>
To: Personal Submersibles General Discussion
        <personal_submersibles at psubs. org>
Subject: Re: [PSUBS-MAILIST] cyclops sub
Message-ID: <1369539514.852268. 1505087490107 at mail.yahoo.com>
Content-Type: text/plain; charset="utf-8"

Not 100 % sure but looks like it might be the Perry PC 1501 with a lot of modifications.?
Greg Cottrell

      From: Antoine Delafargue via Personal_Submersibles <personal_submersibles at psubs. org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs. org>
 Sent: Sunday, September 10, 2017 6:58 PM
 Subject: [PSUBS-MAILIST] cyclops sub

Hello allwould be nice to have Stockton on this list...
https://www.bloomberg.com/ news/features/2017-09-07/it-s- brutal-to-get-to-the-ocean-s- depths-this-minisub-will-take- you-there

regardsAntoine________________ ______________________________ _
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End of Personal_Submersibles Digest, Vol 51, Issue 30
****************************** ***********************

-- 
-River J. Dolfi
412-997-2526rdolfi7 at gmail.comrwd5301@psu.edu_______________________________________________
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