[PSUBS-MAILIST] Personal_Submersibles Digest, Vol 50, Issue 19
Marc de Piolenc via Personal_Submersibles
personal_submersibles at psubs.org
Wed Aug 9 22:01:02 EDT 2017
Right - that will work fine with a metal hull!
Best,
Marc
On 8/10/2017 9:33 AM, Alan via Personal_Submersibles 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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>>>>> 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 at mail.gmail.com
>>>>> <mailto:CAK4DN4DuhY87_6v+19RNb-6x2d9fKdaCW1uND2psz=ncVoQ9cg 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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>>>>>
>>>>> ------------------------------
>>>>>
>>>>> 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
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ______________________________ _________________
>>>>> Personal_Submersibles mailing list
>>>>> Personal_Submersibles at psubs. org
>>>>> http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles
>>>>>
>>>>>
>>>>> ______________________________ _________________
>>>>> Personal_Submersibles mailing list
>>>>> Personal_Submersibles at psubs. org
>>>>> 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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>>>>> ------------------------------
>>>>>
>>>>> End of Personal_Submersibles Digest, Vol 50, Issue 19
>>>>> *****************************************************
>>>>> _______________________________________________
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>>>>> <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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>>> _______________________________________________
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>>> Personal_Submersibles at psubs.org
>>> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>
>> --
>> 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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> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
--
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
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