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<div class="moz-cite-prefix">Vance - when you were piloting subs in
the oilfields, what contingency plans were in place for rescue in
the event of becoming disabled?<br>
<br>
Sean<br>
<br>
<br>
On 2014-05-19 10:46, via Personal_Submersibles wrote:<br>
</div>
<blockquote
cite="mid:8D141990668167B-70C-29B03@webmail-d285.sysops.aol.com"
type="cite"><font color="black" face="Arial, Helvetica,
sans-serif" size="3"><font class="Apple-style-span" size="3">Pinned
into some kind of "only one way out" configuration by the
currents. Kind of nerve wracking, that one.</font>
<div><font class="Apple-style-span" size="3">Vance<br>
</font><br>
<br>
<div style="font-family: helvetica, arial; font-size: 10pt;
color: black; ">-----Original Message-----<br>
From: Brian Cox via Personal_Submersibles
<a class="moz-txt-link-rfc2396E" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a><br>
To: Personal Submersibles General Discussion
<a class="moz-txt-link-rfc2396E" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a><br>
Sent: Mon, May 19, 2014 10:38 am<br>
Subject: Re: [PSUBS-MAILIST] Commercial question<br>
<br>
<div id="AOLMsgPart_0_297383ff-6f7d-4f6d-811f-6dfb80f55294">
<div style="font-family:Arial, sans-serif;
font-size:10pt;">What are ‘box canyon’ current pins ?
I don't want to get stuck in one !<br>
<br>
--- <a moz-do-not-send="true"
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>
wrote:<br>
<br>
From: Phil Nuytten via Personal_Submersibles <<a
moz-do-not-send="true"
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>
To: "Personal Submersibles General Discussion" <<a
moz-do-not-send="true"
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>
Subject: Re: [PSUBS-MAILIST] Commercial question<br>
Date: Wed, 7 May 2014 22:31:18 -0700<br>
<br>
<div dir="ltr">
<div style="color: rgb(0, 0, 0); font-family: ">
<div>Hi, Scott,</div>
<div>The major reason that quite a few operators
prefer subs over ROV’s is the absence of a
surface tether. This allows you to go places that
you shouldn’t and wouldn’t go with a machine
because the risk of entanglement – inside platform
legs, pile jackets, etc., There are a number of
other reasons that have to do with the operators
senses being right on the site rather than a half
a mile away. Difficult to explain is the ‘whole
grasp’ scenario that ROV operators who try manned
subs almost always mention. Simply put, in a sub
with a wide view port or a 360 degree dome, you
have a strong sense of where everything is – how
long ago you passed that pipeline, what direction
it’s in to go back to, the lay of the bottom, the
trending of the currents, where to find lees to
hide in, how to avoid ‘box canyon’ current pins,
the ability to hit ‘auto altitude’ and fly a fixed
height above a pipeline or cable regardless of the
bottom (and therefore the cable’s) undulations.
When it comes to doing complex work using manips,
there’s no contest man versus machines. Machines
do get the work done if they are set up properly,
but much slower and with many tries, compared to
the pilot whose hand on the joystick is five feet
away from the work .</div>
<div>You often hear ROV types say ‘well, it’s just
the same as being there”. . . Yeah, right! just
like telephone sex is the same as the real thing!</div>
<div>I’ll get off my soapbox now.</div>
<div>Phil</div>
<div style="color: rgb(0, 0, 0); font-family: ">
<div style="font: 10pt/normal tahoma;
font-size-adjust: none; font-stretch: normal;">
<div> </div>
<div style="background: rgb(245, 245, 245);">
<div style="font-color: black;"><b>From:</b> <a
moz-do-not-send="true"
title="personal_submersibles@psubs.org"
href="mailto:personal_submersibles@psubs.org">swaters
via Personal_Submersibles</a> </div>
<div><b>Sent:</b> Wednesday, May 14, 2014 7:43
PM</div>
<div><b>To:</b> <a moz-do-not-send="true"
title="personal_submersibles@psubs.org"
href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>
</div>
<div><b>Subject:</b> [PSUBS-MAILIST]
Commercial question</div>
</div>
</div>
<div> </div>
</div>
<div style="color: rgb(0, 0, 0); font-family: ">
<div>I have always heard that ROV's are cheaper to
operate, less risky, and cheaper to buy. I was
curious what is the advantages of submarines in
the commercial world such as the oil industry?
It seems like Phil Nuyten has been able to be
sucsessful with submarines. Just a curiousity of
mine.</div>
<div>Thanks,</div>
<div>Scott Waters</div>
<div> <br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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</font></blockquote>
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