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Re: [PSUBS-MAILIST] Drift dives
Hi,
I did some checking and found this site:
http://seawifs.gsfc.nasa.gov/OCEAN_PLANET/HTML/ben_franklin.html
The Ben Franklin had propulsion and could do 4 knots.
Any sub one might consider for drift diving should
have propulsion for all the wonderful reasons pointed
out.
I think the key for a drift sub would be livability. A
stock K-250 would be just too small. A K-350 would be
the minimum size possible. You can lay down, sleep,
eat MRE's, and poop into baggies. Well maybe livable
is too generous a term. Survivable more like it.
Take enough consumables like O2 tanks, CO2 absorbant,
battery power, food and water and the pilot can last
as long as they can stand it.
Regards,
Ray
--- "Dan H." <jmachine@adelphia.net> wrote:
> OK Steve,
> I agree. What you describe sounds interesting.
> But SCUBA drifting and drifting in a sub aren't the
> same thing. For a few thousand dollars you can
> purchase the gear and SCUBA drift. Or rent the gear
> for a few hundred and do the same. A drift sub, or
> any kind of sub, is that investment and much much
> more.
>
> If your SCUBA diving you can climb back in the boat
> when your running low on air and speed your way back
> to port when you through diving. If your in a tank
> floating in the deep everything is more complicated.
> Getting to and from port, dealing with breathing
> air issues and even just stretching your legs.
>
> If a person is going to build a PSUB, (note,
> Personal sub, not a major sub for scientific current
> research) It's foolish no to add the amenities to be
> able to maneuver it. At least to be able to
> maneuver as a scuba diver would maneuver himself
> with a flick of his wrist or a kick of his feet.
>
> It may be interesting to be floating in a fog and
> have things to see come your way, but it's far more
> interesting to be able to seek out those interesting
> things wherever they may be.
>
> Not knowing where you will end up, surfacing and
> finding that you drifted in a different direction
> and out of contact with your surface craft doesn't
> appeal to most. Drifted into the path of oncoming
> traffic or up against rocks and having no way to get
> away, other then dive out and swim, is even less
> appealing.
>
> If your tethered on a line from a boat you wouldn't
> get lost but there a numerous hazards for
> entanglement. If your SCUBA diving you just swim to
> the side or let go and swim up to avoid hazards.
> Not that easy drifting in a tank.
>
> If your going to build an hull and get into it,
> you'll want to have control over it's movement. If
> you want to drift, you can do that in a powered sub
> also. Heck, most of the time in mine I am drifting,
> but when I want to move under power I can.
>
> Dan H.
> ----- Original Message -----
> From: Stephen Pearce
> To: personal_submersibles@psubs.org
> Sent: Friday, September 01, 2006 8:03 PM
> Subject: RE: [PSUBS-MAILIST] Drift dives
>
>
> Dan and Brian
>
>
>
> I beg to differ I think there 'are' compelling
> reasons to do it!
>
>
>
> Try a blue water drift dive (scuba) hanging on a
> rope about 15 metres blow the boat if you ever get
> the chance. It can be one of the best diving
> experiences you can have. Part of the attraction is
> that there are no perspectives and it can be quite
> thrilling when literally out of the blue you find
> yourself being visited by the likes of a large sail
> fish or Minke whale.
>
>
>
> The other aspect that would appeal to me is you
> don't know where you will end up! Add to this the
> sense of adventure participating, enjoyment of
> constructing and designing such a vehicle and the
> list of compelling reasons is starting to grow.
>
>
>
> Regards
>
>
>
> Steve P
>
>
>
> -----Original Message-----
> From: owner-personal_submersibles@psubs.org
> [mailto:owner-personal_submersibles@psubs.org] On
> Behalf Of Brian Cox
> Sent: Saturday, 2 September 2006 7:23 AM
> To: personal_submersibles@psubs.org
> Subject: Re: [PSUBS-MAILIST] Drift dives
>
>
>
> Dan,
>
> You are right, there is really not very
> many compelling reasons to do it. For all the
> effort that you would put into making such a vessel
> you might as well build a sub. If you used it as an
> underwater habitat and you also had a sub then I
> could see it having a purpose. The only way you
> could move it around would be to drag it though the
> water with a boat. Or you could wait until winter
> when the currents reverse and then travel the
> opposite direction. I tried posting a picture of a
> model of a "drift" sub but I think I screwed up on
> the correct address. I'll try to post on the the
> moki and post a link.
>
>
>
> Brian
>
> ----- Original Message -----
>
> From: Dan H.
>
> To: personal_submersibles@psubs.org
>
> Sent: Friday, September 01, 2006 04:56
>
> Subject: Re: [PSUBS-MAILIST] Drift dives
>
>
>
> But Brian...... Why?
>
>
>
> If your floating anywhere other then in sight of
> the bottom or on the surface, there's nothing to
> see. If you can't see anything it's not very
> interesting.
>
>
>
> How are you going to know where the best current
> is with no reference to where your going? In a
> balloon you can use visual or GPS. Other the a
> compass heading, you really won't know where you are
> unless you surface to locate your position.
>
>
>
> Why drift aimlessly and what are you going to do
> when you've had enough if you have no thrusters or a
> surface ship capable of lifting you out and carrying
> you back.
>
>
>
> Maybe I'm missing something, Dan H.
>
>
>
>
>
> ----- Original Message -----
>
> From: Brian Cox
>
> To: personal_submersibles@psubs.org
>
> Sent: Thursday, August 31, 2006 10:20 PM
>
> Subject: Re: [PSUBS-MAILIST] Drift dives
>
>
>
> I was thinking something like a sphere with
> windows attached to another sphere below it, use
> the sphere below as a ballast control so you can go
> up and down to various depths and find where the
> best current is.
>
>
>
> Brian
>
> ----- Original Message -----
>
> From: Michael Holt
>
> To: personal_submersibles@psubs.org
>
> Sent: Thursday, August 31, 2006 13:41
>
> Subject: [PSUBS-MAILIST] Drift dives
>
>
>
> Brian Cox wrote:
>
=== message truncated ===
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