[PSUBS-MAILIST] Islamorada Trip Report...
Douglas Suhr via Personal_Submersibles
personal_submersibles at psubs.org
Wed Aug 9 17:45:49 EDT 2017
I'll see if I can attach a couple of photos of the initial light test...
On 8/9/17, Cliff Redus via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
> 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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