[PSUBS-MAILIST] Personal_Submersibles Digest, Vol 50, Issue 19
Stephen Fordyce via Personal_Submersibles
personal_submersibles at psubs.org
Wed Aug 9 22:00:21 EDT 2017
Wow ok - interested to have peltiers explained like that.
Yes Alan, Melbourne is a great place - sadly no submersibles though...
On Thu, Aug 10, 2017 at 11:33 AM, Alan via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:
> Mark,
> you don't need any through hulls, just glue them on to your hull with
> a heat transfer compound. The heat will go through the hull to the
> surrounding
> water but will also radiate laterally through the metal; hence my
> suggestion
> to insulate around the area a bit so that the cold or heat can't come back
> in to
> the hull.
> Alan
>
> Sent from my iPad
>
> > On 10/08/2017, at 1:19 PM, Marc de Piolenc via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
> >
> > Peltier modules ARE more efficient than resistive heaters because they
> are true heat pumps - they don't supply (all) the heat that they emit on
> the hot side. In fact, they are more efficient as heaters than as coolers.
> That said, using them is a lot more difficult than using resistors, because
> they have to be connected on one side to a heat source and on the other to
> the area you want heated. In a sub, that sounds like you need another
> penetration in your pressure hull, which I would not be interested in if it
> were mine.
> >
> > Marc
> >
> >> On 8/10/2017 8:14 AM, Stephen Fordyce via Personal_Submersibles wrote:
> >> Hi Alan,
> >> Resistive heating being about as close as you can get to 100%, I would
> be sceptical about that. I've experimented with Peltier modules for gas
> cooling and they were quite disappointing in performance, although
> wonderfully simple in operation.
> >> Cheers,
> >> Steve
> >> On 10 Aug 2017 8:33 am, "Alan via Personal_Submersibles" <
> personal_submersibles at psubs.org <mailto:personal_submersibles at psubs.org>>
> wrote:
> >> Just did some Googling on the Peltier as a heater.
> >> In an experiment I saw it was more efficient than resistive heating!
> >> This depends to an extent on the ambient heat differential.
> >> I would imagine you would need to attach them to the hull & surround
> >> them
> >> with an insulating material to stop the metal of the hull radiating
> back
> >> the cold or heat produced, & force it to transfer it all to the
> water.
> >> Another bunny trail to investigate.
> >> Cheers Alan
> >> Sent from my iPad
> >> On 10/08/2017, at 9:18 AM, Alan via Personal_Submersibles
> >> <personal_submersibles at psubs.org
> >> <mailto:personal_submersibles at psubs.org>> wrote:
> >>> Mike,
> >>> the peltier is only 1/4 to 1/3 as efficient as a compressor
> >>> system, but Cliff
> >>> & I have very little spare room. They serve as heaters by
> >>> reversing polarity.
> >>> I am not sure of their efficiency as heaters compared with
> >>> resistive coils;
> >>> probably poor! Cliff would have to cut a hole in his fibreglass
> >>> outer & dig back
> >>> the syntactic foam to the pressure hull to get cooling on the
> >>> reverse side of
> >>> the peltier or compressor air conditioning unit. Could look sexy
> >>> if he put some
> >>> shark gills in it for water ingress.
> >>> Cliff didn't have a cover on the dome, & that would let a lot of
> >>> heat in.
> >>> We had a wet towel on Snoopy last time at Islamorada.
> >>> Have heard that people like Nuytco use a shore based air
> >>> conditioner to cool
> >>> the sub down prior to a dive; but I don't know how long that
> >>> benefit would
> >>> last being towed out that distance.
> >>> Cheers Alan
> >>>
> >>>
> >>> Sent from my iPad
> >>>
> >>> On 10/08/2017, at 6:25 AM, peaceroom via Personal_Submersibles
> >>> <personal_submersibles at psubs.org
> >>> <mailto:personal_submersibles at psubs.org>> wrote:
> >>>
> >>>> Reference,summer submarine cooling. A scaled down version of the
> >>>> small cooler with ice and DC fan, similar to the one in Sportys,
> >>>> aviation supplies is what a lot of planes use. Just an
> >>>> inexpensive idea. Peltier coolers provide very little cooling
> >>>> versus DC current used. Mike Patterson
> >>>>
> >>>>
> >>>>
> >>>> Sent from my Samsung device
> >>>>
> >>>>
> >>>> -------- Original message --------
> >>>> From: via Personal_Submersibles <personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>>
> >>>> Date: 8/9/17 11:46 AM (GMT-05:00)
> >>>> To: personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>
> >>>> Subject: Personal_Submersibles Digest, Vol 50, Issue 19
> >>>>
> >>>> Send Personal_Submersibles mailing list submissions to
> >>>> personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>
> >>>>
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> >>>> http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles
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> >>>> or, via email, send a message with subject or body 'help' to
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> >>>>
> >>>> When replying, please edit your Subject line so it is more specific
> >>>> than "Re: Contents of Personal_Submersibles digest..."
> >>>>
> >>>>
> >>>> Today's Topics:
> >>>>
> >>>> 1. Re: Islamorada Trip Report...
> >>>> (Cliff Redus via Personal_Submersibles)
> >>>> 2. Re: Islamorada Trip Report...
> >>>> (james cottrell via Personal_Submersibles)
> >>>>
> >>>>
> >>>> ------------------------------------------------------------
> ----------
> >>>>
> >>>> Message: 1
> >>>> Date: Wed, 9 Aug 2017 08:03:07 -0500
> >>>> From: Cliff Redus via Personal_Submersibles
> >>>> <personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>>
> >>>> To: Personal Submersibles General Discussion
> >>>> <personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>>
> >>>> Subject: Re: [PSUBS-MAILIST] Islamorada Trip Report...
> >>>> Message-ID:
> >>>> <CAK4DN4DuhY87_6v+19RNb-6x2d9fKdaCW1uND2psz=ncVoQ9cg@
> mail.gmail.com
> >>>> <mailto:CAK4DN4DuhY87_6v+19RNb-6x2d9fKdaCW1uND2psz=ncVo
> Q9cg at mail.gmail.com>>
> >>>> Content-Type: text/plain; charset="utf-8"
> >>>>
> >>>> Footage from my sub on the trip is limited due to condensation on
> >>>> viewport. I used Dove soap on the viewport interior prior to
> >>>> taking off
> >>>> but because of the humidity , temperature and duration of the
> >>>> dive, this
> >>>> treatment did not last and I did not have more soap on board.
> The other
> >>>> issue is I only had two hand towels on board and these became
> >>>> soaked with
> >>>> sweat. As such, they were not good for cleaning the condensation
> >>>> off after
> >>>> the two hour tow to the dive site. Action items: Have small
> >>>> bottle of
> >>>> Dove soap on board and more towels for future long duration dives.
> >>>>
> >>>> Yes, I have been reading up on peltier coolers. I have quite a
> >>>> bit of
> >>>> battery capacity so this could work. Unfortunately, mounting on
> >>>> hull won't
> >>>> work for me as I have syntactic foam under the FRP shell over the
> >>>> hull so I
> >>>> don't have a cool surface to mount on. I do have a pair of
> >>>> plugged off
> >>>> ports on the bottom of the boat that would give me access to
> >>>> cooling water
> >>>> source if I installed a small pump on this circuit. Pushing this
> >>>> water
> >>>> through a small fin-fan cooler like you would see on water cooled
> >>>> motorcycle would help with the temperature some what but not
> >>>> humidity. At
> >>>> Islamorada, the average water temperature at the time of the dive
> >>>> was about
> >>>> 87F so this would not have helped all that much. A small DC AC
> >>>> system that
> >>>> controlled both temperature and humidity would be better.
> >>>>
> >>>> On the thruster pneumatic pressure compensation, I was very happy
> >>>> with how
> >>>> this worked. I have all four of my thrusters connected to 1/4"
> >>>> SS tubing
> >>>> that is manifold into a single pressure reducing/relieving
> regulator
> >>>> (thanks Hugh) under the cover just aft of the pilot. I was not
> >>>> sure if a
> >>>> single regulator would work or if I would need one for each
> >>>> thruster but it
> >>>> looks like one was adequate. I have had two deep dives with the
> >>>> arrangement, one to 155 ft and one to 100 ft and have had no
> >>>> issues with
> >>>> water in the thrusters.
> >>>>
> >>>> Best Regards
> >>>>
> >>>> Cliff
> >>>>
> >>>> On Tue, Aug 8, 2017 at 10:50 PM, Alan via Personal_Submersibles <
> >>>> personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>> wrote:
> >>>>
> >>>> > Thanks Cliff,
> >>>> > I presume you shot some footage from your sub & this is the
> entr?e!
> >>>> > Nice & clear, you must have been pretty happy down there!
> >>>> > After you mentioned air conditioning, I looked into peltier
> >>>> elements &
> >>>> > air conditioning units. The peltier conditioners have only 25%
> the
> >>>> > efficiency
> >>>> > of a normal compression cycle system, but are really small & by
> >>>> reversing
> >>>> > the polarity can act as heaters. A few of those peltier
> >>>> elements stuck to
> >>>> > the hull
> >>>> > with air channelled past them might be the way to go! Not sure
> what
> >>>> > batteries you
> >>>> > are using, but the new battery technologies on the way will
> >>>> make energy
> >>>> > expenditure less of an issue!
> >>>> > Do you have all 4 motors exhausting through one regulator?
> >>>> Couldn't see
> >>>> > any
> >>>> > air coming out of the motor seals so the pressure isn't
> >>>> building up too
> >>>> > much
> >>>> > when exhausting.
> >>>> > Cheers Alan
> >>>> >
> >>>> >
> >>>> >
> >>>> > Sent from my iPad
> >>>> >
> >>>> > On 9/08/2017, at 8:25 AM, Cliff Redus via Personal_Submersibles <
> >>>> > personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>> wrote:
> >>>> >
> >>>> > Added two quick and dirty Youtube videos from 2017 Psubs
> >>>> Regatta. The
> >>>> > first is the 100 ft dive 5.3 miles offshore on Aug 3
> >>>> > https://www.youtube.com/watch?v=sHqL49V0lMw
> >>>> <https://www.youtube.com/watch?v=sHqL49V0lMw> and the second is a
> >>>> night
> >>>> > dive in front of Doug's house
> >>>> https://www.youtube.com/watch?v=KDBw1ZOdKaI
> >>>> <https://www.youtube.com/watch?v=KDBw1ZOdKaI>.
> >>>> > Alec is working on a more comprehensive video of the Regatta.
> >>>> >
> >>>> > Regards
> >>>> >
> >>>> > Cliff
> >>>> >
> >>>> > On Mon, Aug 7, 2017 at 4:53 PM, Douglas Suhr via
> >>>> Personal_Submersibles <
> >>>> > personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>> wrote:
> >>>> >
> >>>> >> Greetings PSUBS group, Douglas Suhr here to share my take on
> >>>> the 4-day
> >>>> >> sub operation we just completed in Islamorada, FL (July 31st,
> >>>> August
> >>>> >> 1-3).
> >>>> >>
> >>>> >> Wow, what a whirlwind! So July 31st was really an arrival /
> >>>> setup day
> >>>> >> with August 1-3 being true operational days. Though it was
> >>>> unfortunate
> >>>> >> that Alec wasn't able to make it with Shackleton, we had our
> hands
> >>>> >> full with Cliff's R-300. Without Shackleton, we also had
> >>>> enough time
> >>>> >> to get Snoopy set up and lowered into the canal for some basic
> >>>> diving.
> >>>> >>
> >>>> >> List of Crew: Dan Lance, Steve McQueen, Cliff Redus, Rick
> Maxwell,
> >>>> >> River Dolfi, Mike Patterson, Doug, Sarah, Douglas Suhr.
> >>>> >>
> >>>> >> This was my first time meeting Dan Lance, a (retired)
> >>>> saturation diver
> >>>> >> and commercial welder. What a pleasure to have him join us on
> this
> >>>> >> operation. Dan is modest, but most willing to share his
> >>>> knowledge and
> >>>> >> extensive experience with a newbie like me. So pleased to have
> >>>> chatted
> >>>> >> with him in the Keys. During the towing of the R-300, Dan
> >>>> manned the
> >>>> >> tow line and helped with comms.
> >>>> >>
> >>>> >> Steve McQueen and River Dolfi did awesome jobs as our frog men.
> >>>> >> Filming, attaching / detaching davit and tow lines, etc. they
> were
> >>>> >> both in and out of the water quite a bit (especially Steve). I
> >>>> think
> >>>> >> River took a little jelly sting for the team. What troopers!
> >>>> >>
> >>>> >> Cliff and his assistant Rick are such a joy be around. Rick is
> >>>> one of
> >>>> >> the friendliest people you'll ever meet (and even brought a
> >>>> gift for
> >>>> >> the group: a watermelon, straight from Texas!). Cliff is always
> >>>> >> willing to share his expertise (and sub, too) with anyone
> >>>> who'd like
> >>>> >> to learn more. I know that between Dan Lance and Cliff, I
> >>>> learned more
> >>>> >> than I can remember last week.
> >>>> >>
> >>>> >> Mike Patterson, mom, dad and myself were all just providing
> >>>> whatever
> >>>> >> kind of "troop support" we could to Cliff and the R-300.
> >>>> >>
> >>>> >> River, Steve and Myself got in some dive time on Snoopy in the
> >>>> canal
> >>>> >> (which was great), but I think the biggest accomplishment was
> >>>> getting
> >>>> >> the R-300 out a ways into the ocean.
> >>>> >>
> >>>> >> Our Boston Whaler (a 25' boat with a single 250hp Yamaha) was
> >>>> able to
> >>>> >> tow the R-300 out about 5 miles into the ocean (at about 4mph).
> We
> >>>> >> were in radio communication with Cliff most of the time,
> >>>> though we did
> >>>> >> suffer a few intermittent losses in comms. When we got to a
> >>>> spot about
> >>>> >> 100 feet deep, we started to slow down a bit and at that point
> >>>> the tow
> >>>> >> line hook (an admittedly cheap thing) let loose(!) so we
> >>>> decided that
> >>>> >> we had reached our dive location. We switched from marine
> >>>> radio to OTS
> >>>> >> and Cliff started down. Visibility was supurb! As Cliff neared
> the
> >>>> >> bottom at 100 ? 110 feet, he was still quite visible from the
> >>>> Whaler!
> >>>> >> His 18 foot long R-300 looked to be about 3 inches long, but
> >>>> wow did
> >>>> >> it ever stand out from the rest of the sandy bottom. Cliff
> >>>> spent about
> >>>> >> an hour "flying" his sub, surfacing, diving and maneuvering
> about,
> >>>> >> testing systems and observing the ocean around him. By the
> >>>> time Cliff
> >>>> >> surfaced and we towed back to port Antigua, elapsed time stood
> >>>> at 4.5
> >>>> >> / 5 hours (estimate). Cliff said that he stayed cool by the
> water
> >>>> >> flowing over the sub's dome hatch while in tow. Upon returning
> >>>> I think
> >>>> >> we were all ready to take a break, but everyone felt great
> >>>> >> accomplishment with the mission.
> >>>> >>
> >>>> >> A couple of lessons I took away from the tow out: We need
> >>>> better tow
> >>>> >> equipment (better line, hardware and maybe a quick release).
> >>>> Our boat
> >>>> >> REALLY needs a GPS (still don't have one). Towing into waves
> >>>> isn't so
> >>>> >> much a problem, but when towing with the waves, our tow line
> >>>> needs to
> >>>> >> be measured so as to sustain the proper distance between tow
> >>>> vessel
> >>>> >> and sub (otherwise the sub and boat are constantly slacking
> >>>> and then
> >>>> >> jerking, stressing the tow line and making it difficult for
> >>>> boat and
> >>>> >> sub to track straight).
> >>>> >>
> >>>> >> The devotion of our crew was amazing, even in the heat and the
> >>>> waves
> >>>> >> everyone did their jobs. Managing even a small sub operation
> >>>> like this
> >>>> >> is more work / effort than meets the eye, that's for sure. At
> >>>> dinner,
> >>>> >> one of the main discussions revolved around a support vessel
> >>>> that can
> >>>> >> carry a sub or two on board, eliminating the slow, time
> >>>> consuming tow
> >>>> >> out to an ocean dive site. Dan Lance shared details on his
> support
> >>>> >> vessel project, which is no doubt going to be a dream in terms
> of
> >>>> >> logistics. Hopefully when said vessel is ready to sail, Dan
> >>>> will lend
> >>>> >> its services to host a diving event! ~ Douglas S.
> >>>> >>
> >>>> >> _______________________________________________
> >>>> >> Personal_Submersibles mailing list
> >>>> >> Personal_Submersibles at psubs.org
> >>>> <mailto:Personal_Submersibles at psubs.org>
> >>>> >>
> >>>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
> >>>> <http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles>
> >>>> >>
> >>>> >
> >>>> > _______________________________________________
> >>>> > Personal_Submersibles mailing list
> >>>> > Personal_Submersibles at psubs.org
> >>>> <mailto:Personal_Submersibles at psubs.org>
> >>>> > http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
> >>>> <http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles>
> >>>> >
> >>>> >
> >>>> > _______________________________________________
> >>>> > Personal_Submersibles mailing list
> >>>> > Personal_Submersibles at psubs.org
> >>>> <mailto:Personal_Submersibles at psubs.org>
> >>>> > http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
> >>>> <http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles>
> >>>> >
> >>>> >
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> submersibles/attachments/20170809/ea2b1476/attachment-0001.html
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> >>>>
> >>>> ------------------------------
> >>>>
> >>>> Message: 2
> >>>> Date: Wed, 9 Aug 2017 15:46:22 +0000 (UTC)
> >>>> From: james cottrell via Personal_Submersibles
> >>>> <personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>>
> >>>> To: Personal Submersibles General Discussion
> >>>> <personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>>
> >>>> Subject: Re: [PSUBS-MAILIST] Islamorada Trip Report...
> >>>> Message-ID: <1907666847.421009.1502293582178 at mail.yahoo.com
> >>>> <mailto:1907666847.421009.1502293582178 at mail.yahoo.com>>
> >>>> Content-Type: text/plain; charset="utf-8"
> >>>>
> >>>> Hi Cliff,
> >>>> Congrats on your dives. Sub really looks great in those videos.
> >>>> With regards to an AC solution, one low tech method would be to
> >>>> blow air across ice in a small cooler. Water ice can be super
> >>>> cooled with Dry Ice the night before. Dry ice is about - 100 F
> >>>> and water ice cooled to this temperature should stay cold for
> >>>> quite some time.
> >>>> Greg C From: Cliff Redus via Personal_Submersibles
> >>>> <personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>>
> >>>> To: Personal Submersibles General Discussion
> >>>> <personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>>
> >>>> Sent: Wednesday, August 9, 2017 9:05 AM
> >>>> Subject: Re: [PSUBS-MAILIST] Islamorada Trip Report...
> >>>>
> >>>> Footage from my sub on the trip is limited due to condensation on
> >>>> viewport.? I used Dove soap on the viewport interior?prior to
> >>>> taking off but because of the humidity , temperature and duration
> >>>> of the dive, this treatment did not last and I did not have more
> >>>> soap on board.? The other issue is I only had two hand towels on
> >>>> board and these became soaked with sweat.? As such, they were not
> >>>> good for cleaning the condensation off?after the two hour tow to
> >>>> the dive site.? Action items:? Have small bottle of Dove soap on
> >>>> board and more towels for future long duration dives.?
> >>>> Yes, I have been reading up on peltier coolers.? I have quite a
> >>>> bit of battery capacity so this could work.? Unfortunately,
> >>>> mounting on hull won't work for me as I have syntactic foam under
> >>>> the FRP shell over the hull so I don't have a cool surface to
> >>>> mount on.? I do have a pair of plugged off ports on the bottom of
> >>>> the boat that would give me access to cooling water source if I
> >>>> installed a small pump on this circuit.? Pushing this water
> >>>> through a small fin-fan cooler like you would see on?water cooled
> >>>> motorcycle would help with the temperature some what but
> >>>> not?humidity.? ?At Islamorada, the average water temperature at
> >>>> the time of the dive was about 87F so this would not have helped
> >>>> all that much.? A small DC AC system that controlled both
> >>>> temperature and humidity would be better.
> >>>> On the thruster pneumatic pressure compensation, I was very happy
> >>>> with how this worked.? I have all four of my thrusters connected
> >>>> to 1/4" SS tubing that is manifold into a single pressure
> >>>> reducing/relieving regulator (thanks Hugh) ?under the cover just
> >>>> aft of the pilot.?I was not sure if a single regulator would work
> >>>> or if I would need one for each thruster but it looks like one
> >>>> was adequate.? I have had two deep dives with the arrangement,
> >>>> one to 155 ft and one to 100 ft and have had no issues with water
> >>>> in the thrusters.
> >>>> Best Regards
> >>>> Cliff
> >>>> On Tue, Aug 8, 2017 at 10:50 PM, Alan via Personal_Submersibles
> >>>> <personal_submersibles at psubs.org
> >>>> <mailto:personal_submersibles at psubs.org>> wrote:
> >>>>
> >>>> Thanks Cliff,I presume you shot some footage from your sub & this
> >>>> is the entr?e!Nice & clear, you must have been pretty happy down
> >>>> there!After you mentioned air conditioning, I looked into peltier
> >>>> elements &air conditioning units. The peltier conditioners have
> >>>> only 25% the efficiency?of a normal compression cycle system, but
> >>>> are really small & by reversingthe polarity can act as heaters. A
> >>>> few of those peltier elements stuck to the hull?with air
> >>>> channelled past them might be the way to go! Not sure what
> >>>> batteries youare using, but the new battery technologies on the
> >>>> way will make energyexpenditure less of an issue!Do you have all
> >>>> 4 motors exhausting through one regulator? Couldn't see any?air
> >>>> coming out of the motor seals so the pressure isn't building up
> >>>> too muchwhen exhausting.Cheers Alan
> >>>>
> >>>>
> >>>> Sent from my iPad
> >>>> On 9/08/2017, at 8:25 AM, Cliff Redus via Personal_Submersibles
> >>>> <personal_submersibles at psubs. org> wrote:
> >>>>
> >>>>
> >>>> Added two quick and dirty Youtube videos from 2017 Psubs
> >>>> Regatta.? The first is the 100 ft dive 5.3 miles offshore on Aug
> >>>> 3??https://www.youtube.com/ watch?v=sHqL49V0lMw?and the second is
> >>>> a night dive in front of Doug's house??https://www.youtube.
> >>>> com/watch?v=KDBw1ZOdKaI.? Alec is working on a more comprehensive
> >>>> video of the Regatta.
> >>>> Regards
> >>>> Cliff
> >>>> On Mon, Aug 7, 2017 at 4:53 PM, Douglas Suhr via
> >>>> Personal_Submersibles <personal_submersibles at psubs. org> wrote:
> >>>>
> >>>> Greetings PSUBS group, Douglas Suhr here to share my take on the
> >>>> 4-day
> >>>> sub operation we just completed in Islamorada, FL (July 31st,
> August
> >>>> 1-3).
> >>>>
> >>>> Wow, what a whirlwind! So July 31st was really an arrival / setup
> day
> >>>> with August 1-3 being true operational days. Though it was
> >>>> unfortunate
> >>>> that Alec wasn't able to make it with Shackleton, we had our hands
> >>>> full with Cliff's R-300. Without Shackleton, we also had enough
> time
> >>>> to get Snoopy set up and lowered into the canal for some basic
> >>>> diving.
> >>>>
> >>>> List of Crew: Dan Lance, Steve McQueen, Cliff Redus, Rick Maxwell,
> >>>> River Dolfi, Mike Patterson, Doug, Sarah, Douglas Suhr.
> >>>>
> >>>> This was my first time meeting Dan Lance, a (retired) saturation
> >>>> diver
> >>>> and commercial welder. What a pleasure to have him join us on this
> >>>> operation. Dan is modest, but most willing to share his knowledge
> and
> >>>> extensive experience with a newbie like me. So pleased to have
> >>>> chatted
> >>>> with him in the Keys. During the towing of the R-300, Dan manned
> the
> >>>> tow line and helped with comms.
> >>>>
> >>>> Steve McQueen and River Dolfi did awesome jobs as our frog men.
> >>>> Filming, attaching / detaching davit and tow lines, etc. they were
> >>>> both in and out of the water quite a bit (especially Steve). I
> think
> >>>> River took a little jelly sting for the team. What troopers!
> >>>>
> >>>> Cliff and his assistant Rick are such a joy be around. Rick is one
> of
> >>>> the friendliest people you'll ever meet (and even brought a gift
> for
> >>>> the group: a watermelon, straight from Texas!). Cliff is always
> >>>> willing to share his expertise (and sub, too) with anyone who'd
> like
> >>>> to learn more. I know that between Dan Lance and Cliff, I learned
> >>>> more
> >>>> than I can remember last week.
> >>>>
> >>>> Mike Patterson, mom, dad and myself were all just providing
> whatever
> >>>> kind of "troop support" we could to Cliff and the R-300.
> >>>>
> >>>> River, Steve and Myself got in some dive time on Snoopy in the
> canal
> >>>> (which was great), but I think the biggest accomplishment was
> getting
> >>>> the R-300 out a ways into the ocean.
> >>>>
> >>>> Our Boston Whaler (a 25' boat with a single 250hp Yamaha) was able
> to
> >>>> tow the R-300 out about 5 miles into the ocean (at about 4mph). We
> >>>> were in radio communication with Cliff most of the time, though
> >>>> we did
> >>>> suffer a few intermittent losses in comms. When we got to a spot
> >>>> about
> >>>> 100 feet deep, we started to slow down a bit and at that point
> >>>> the tow
> >>>> line hook (an admittedly cheap thing) let loose(!) so we decided
> that
> >>>> we had reached our dive location. We switched from marine radio
> >>>> to OTS
> >>>> and Cliff started down. Visibility was supurb! As Cliff neared the
> >>>> bottom at 100 ? 110 feet, he was still quite visible from the
> Whaler!
> >>>> His 18 foot long R-300 looked to be about 3 inches long, but wow
> did
> >>>> it ever stand out from the rest of the sandy bottom. Cliff spent
> >>>> about
> >>>> an hour "flying" his sub, surfacing, diving and maneuvering about,
> >>>> testing systems and observing the ocean around him. By the time
> Cliff
> >>>> surfaced and we towed back to port Antigua, elapsed time stood at
> 4.5
> >>>> / 5 hours (estimate). Cliff said that he stayed cool by the water
> >>>> flowing over the sub's dome hatch while in tow. Upon returning I
> >>>> think
> >>>> we were all ready to take a break, but everyone felt great
> >>>> accomplishment with the mission.
> >>>>
> >>>> A couple of lessons I took away from the tow out: We need better
> tow
> >>>> equipment (better line, hardware and maybe a quick release). Our
> boat
> >>>> REALLY needs a GPS (still don't have one). Towing into waves isn't
> so
> >>>> much a problem, but when towing with the waves, our tow line needs
> to
> >>>> be measured so as to sustain the proper distance between tow vessel
> >>>> and sub (otherwise the sub and boat are constantly slacking and
> then
> >>>> jerking, stressing the tow line and making it difficult for boat
> and
> >>>> sub to track straight).
> >>>>
> >>>> The devotion of our crew was amazing, even in the heat and the
> waves
> >>>> everyone did their jobs. Managing even a small sub operation like
> >>>> this
> >>>> is more work / effort than meets the eye, that's for sure. At
> dinner,
> >>>> one of the main discussions revolved around a support vessel that
> can
> >>>> carry a sub or two on board, eliminating the slow, time consuming
> tow
> >>>> out to an ocean dive site. Dan Lance shared details on his support
> >>>> vessel project, which is no doubt going to be a dream in terms of
> >>>> logistics. Hopefully when said vessel is ready to sail, Dan will
> lend
> >>>> its services to host a diving event! ~ Douglas S.
> >>>>
> >>>> ______________________________ _________________
> >>>> Personal_Submersibles mailing list
> >>>> Personal_Submersibles at psubs.or
> >>>> <mailto:Personal_Submersibles at psubs.or> g
> >>>> http://www.psubs.org/mailman/l istinfo.cgi/personal_submersib les
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> ______________________________ _________________
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> >>>> http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles
> >>>>
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> >>>> ______________________________ _________________
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> >>>>
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> >>>> *****************************************************
> >>>> _______________________________________________
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> >
> > --
> > Archivale catalog: http://www.archivale.com/catalog
> > Polymath weblog: http://www.archivale.com/weblog
> > Translations (ProZ profile): http://www.proz.com/profile/639380
> > Translations (BeWords profile): http://www.bewords.com/Marc-dePiolenc
> > Ducted fans: http://massflow.archivale.com/
> > _______________________________________________
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> > http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
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