[PSUBS-MAILIST] Personal_Submersibles Digest, Vol 50, Issue 19
Gregory Snyder via Personal_Submersibles
personal_submersibles at psubs.org
Fri Aug 11 23:31:00 EDT 2017
Cool!
We could meet up!
G
> On Aug 11, 2017, at 4:07 PM, Pete Niedermayr via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
> West Saint Paul
> --------------------------------------------
> On Thu, 8/10/17, Gregory Snyder via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
> Subject: Re: [PSUBS-MAILIST] Personal_Submersibles Digest, Vol 50, Issue 19
> To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
> Date: Thursday, August 10, 2017, 6:39 PM
>
> Pete!
> Are you in Minnesota?
> Me too.
> Minnetrista and Duluth.
>
>> On Aug 10, 2017, at 6:24 PM, Pete
> Niedermayr via Personal_Submersibles <personal_submersibles at psubs.org>
> wrote:
>>
>> Melbourne ? Try Minnesota.
>>
> --------------------------------------------
>> On Wed, 8/9/17, Alan via
> Personal_Submersibles <personal_submersibles at psubs.org>
> wrote:
>>
>> Subject: Re: [PSUBS-MAILIST]
> Personal_Submersibles Digest, Vol 50, Issue 19
>> To: "Personal Submersibles General
> Discussion" <personal_submersibles at psubs.org>
>> Date: Wednesday, August 9, 2017,
> 8:09 PM
>>
>> Hi
>> Steve,ideally a normal air
>> conditioner would be better for
> cooling, but you have to get
>> rid of it's heat somehow.
>> I am not sure how the expensive
> submersibles do it! Maybe
>> there is a
>> through hull to an external heat
> exchanger. They are also
>> noisy, bulky & I could bewrong
> but I believe
>> G.L. have issues with the gas they
> use! If the peltier was
>> 25% asefficient as a
>> compression unit, & needed 4 x
> the power, then that
>> might mean havinganother battery
> to
>> drive it. The bulk & expense
> of the battery may even out
>> the cost& size comparison
>> of the two options. This would be
> interesting to
>> research!I
>> saw a couple of articles that said
> the Peltier was up there
>> in efficiency with resistive
> heating. They
>> are used in climate control
> modules in both their heating
>> &cooling
>> functions, & I like this
> option for a submersible where
>> you can go from one extreme of
> temperature
>> to another! ( like
> Melbourne)Cheers Alanp.s. my daughter loves
>> it in Melbourne she has been there
> 4 years now!
>>
>>
>>
>> Sent
>> from my iPad
>> On
>> 10/08/2017, at 12:14 PM, Stephen
> Fordyce via
>> Personal_Submersibles <personal_submersibles at psubs.org>
>> 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>
>> 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 themwith
>> an insulating material to stop the
> metal of the hull
>> radiating backthe
>> 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> 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 backthe
>> syntactic foam to the pressure
> hull to get cooling on the
>> reverse side ofthe peltier or
> compressor air
>> conditioning unit. Could look sexy
> if he put
>> someshark 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
> coolthe sub down
>> prior to a dive; but I don't know
> how long that benefit
>> wouldlast 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> 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>
>> Date: 8/9/17 11:46 AM
>> (GMT-05:00)
>> To: personal_submersibles at psubs.
>> org
>> Subject: Personal_Submersibles
>> Digest, Vol 50, Issue 19
>>
>> Send Personal_Submersibles mailing
> list
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>> personal_submersibles at psubs.
>> org
>>
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> line so it is more
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>> 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>
>> To: Personal Submersibles
>> General Discussion
>> <personal_submersibles at psubs.
>> org>
>> Subject: Re: [PSUBS-MAILIST]
>> Islamorada Trip Report...
>> Message-ID:
>>
> <CAK4DN4DuhY87_6v+19RNb-
>> 6x2d9fKdaCW1uND2psz=ncVoQ9cg@
> 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> 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> 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.
>> 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
>>> http://www.psubs.org/mailman/
>> listinfo.cgi/personal_
> submersibles
>>>
>>>
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> --------------
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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>
>> To: Personal Submersibles
>> General Discussion
>> <personal_submersibles at psubs.
>> org>
>> Subject: Re: [PSUBS-MAILIST]
>> Islamorada Trip Report...
>> Message-ID:
> <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>
>> To: Personal Submersibles
>> General Discussion <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> 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.
>>
>> ______________________________
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> les
>>
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