[PSUBS-MAILIST] Islamorada Trip Report...
Cliff Redus via Personal_Submersibles
personal_submersibles at psubs.org
Thu Aug 10 15:54:25 EDT 2017
Brian due to the low freeboard, for safety reasons NOP is to never open the
hatch at sea.
Best Regards
Cliff
On Wed, Aug 9, 2017 at 11:59 PM, Brian Cox via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:
> Cliff,
> Would it have been possible to enter the sub once you where at
> the dive site. Just tow it out there unmanned?
>
> Brian
>
> --- personal_submersibles at psubs.org wrote:
>
> 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...
> Date: Wed, 9 Aug 2017 16:03:45 -0500
>
> Lights performed great! These 5K lumen lights are very bright. I have
> four on the boat two pointing forward and two to the side. The lights
> would illuminate the water around the boat very nicely. Also can run the
> lights indefinitely out of the water. After the night dive when the boat
> was on the dock, we used the sub lights to light up all around the sub so
> we could secure it for the night. I need to look at my data to see what
> the measured current was for all four lights but I? know it was low .
> Flood orientation worked great. At the base, I had better vis at night on
> the bottom with lights than in day without. Also fish are attracted to
> light.
>
> Best Regard
>
> Cliff
>
> On Wed, Aug 9, 2017 at 3:53 PM, Pete Niedermayr via Personal_Submersibles
> <personal_submersibles at psubs.org> wrote:
>
> Cliff, How did the lights perform ?
>
> Pete
> --------------------------------------------
> On Wed, 8/9/17, irox via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Subject: Re: [PSUBS-MAILIST] Islamorada Trip Report...
> To: "Personal Submersibles General Discussion" <
> personal_submersibles at psubs.org>, "Personal Submersibles General
> Discussion" <personal_submersibles at psubs.org>
> Date: Wednesday, August 9, 2017, 2:10 PM
>
>
> I'm sure you're
> thinking of this as well, but dry ice, if not complete
> separated from the thing it's cooling, can sometimes
> infuse the object being cooled with CO2, which gets released
> when the object heats up/melts again. Possibly this is
> going to very minor and handled by the scrubber, but
> avoiding the unnecessary introduction of CO2 into the hull
> may be better (e.g. ensuring there is no CO2 transferred to
> the cooling material).
>
> -----Original Message-----
>
> From: Cliff Redus via Personal_Submersibles
>
>
> Sent: Aug 9, 2017 11:16 AM
>
> To: Personal Submersibles General
> Discussion
>
> Subject: Re: [PSUBS-MAILIST] Islamorada
> Trip Report...
>
>
>
> Thanks
> James. I know on the first Psub convention in Islamorada
> four years ago, Snoopy was towed out with bags of ice for
> cooling. I like the idea of using the dry ice to super
> cool the water. I will have to give this some
> thought.
> Regards
> Cliff
> On Wed, Aug 9, 2017 at
> 10:46 AM, james cottrell via Personal_Submersibles <
> personal_submersibles at psubs.org>
> wrote:
> 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 entrée!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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