[PSUBS-MAILIST] Personal_Submersibles Digest, Vol 50, Issue 19
Alan via Personal_Submersibles
personal_submersibles at psubs.org
Wed Aug 9 21:33:39 EDT 2017
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>
>>>>
>>>> To subscribe or unsubscribe via the World Wide Web, visit
>>>> http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles
>>>> <http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles>
>>>> or, via email, send a message with subject or body 'help' to
>>>> personal_submersibles-request at psubs.org
>>>> <mailto:personal_submersibles-request at psubs.org>
>>>>
>>>> You can reach the person managing the list at
>>>> personal_submersibles-owner at psubs.org
>>>> <mailto:personal_submersibles-owner at psubs.org>
>>>>
>>>> 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>
>>>> >
>>>> >
>>>> -------------- next part --------------
>>>> An HTML attachment was scrubbed...
>>>> URL:
>>>> <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20170809/ea2b1476/attachment-0001.html
>>>> <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20170809/ea2b1476/attachment-0001.html>>
>>>>
>>>> ------------------------------
>>>>
>>>> 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>
>>>>
>>>>
>>>>
>>>>
>>>> | | Virus-free. www.avast.com <http://www.avast.com> |
>>>>
>>>> -------------- next part --------------
>>>> An HTML attachment was scrubbed...
>>>> URL:
>>>> <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20170809/1374ba08/attachment.html
>>>> <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20170809/1374ba08/attachment.html>>
>>>>
>>>> ------------------------------
>>>>
>>>> Subject: Digest Footer
>>>>
>>>> _______________________________________________
>>>> Personal_Submersibles mailing list
>>>> Personal_Submersibles at psubs.org
>>>> <mailto:Personal_Submersibles at psubs.org>
>>>> http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles
>>>> <http://www.whoweb.com/mailman/listinfo.cgi/personal_submersibles>
>>>>
>>>>
>>>> ------------------------------
>>>>
>>>> End of Personal_Submersibles Digest, Vol 50, Issue 19
>>>> *****************************************************
>>>> _______________________________________________
>>>> 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>
>> _______________________________________________
>> Personal_Submersibles mailing list
>> 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/
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
More information about the Personal_Submersibles
mailing list