<font color='black' size='3' face='Arial, Helvetica, sans-serif'><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>
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<div style="font-family: helvetica, arial; font-size: 10pt; color: black; ">-----Original Message-----<br>
From: Brian Cox via Personal_Submersibles <personal_submersibles@psubs.org><br>
To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><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>
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--- <a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> wrote:<br>
<br>
From: Phil Nuytten via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>
To: "Personal Submersibles General Discussion" <<a 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>
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<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>
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<div style="background: rgb(245, 245, 245);">
<div style="font-color: black;"><b>From:</b> <a 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 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> </div>
<div> </div>
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<div>
<div style="color: rgb(87, 87, 87); font-size: 75%;">Sent from my U.S. Cellular©
Smartphone</div>
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