[PSUBS-MAILIST] Islamorada Trip Report...
Hugh Fulton via Personal_Submersibles
personal_submersibles at psubs.org
Thu Aug 10 17:43:18 EDT 2017
Cliff, Have you ever thought of getting a soft bottom inflatable dinghy and get a zip sewn/glued into the bottom about 6” diameter larger than your hatch then cut out a hole about the size of your hatch inside the zip circle and sew / glue a small skirt about 20” long onto that diameter. SS Band it to under your hatch then you have a method of getting in or out in a bit of a swell. The 20” skirt would allow the dinghy to rise and fall with the waves. Could all be done for very low cost with a surplus dinghy off Ebay.
Just a thought. Hugh
From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Cliff Redus via Personal_Submersibles
Sent: Friday, 11 August 2017 7:54 AM
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] Islamorada Trip Report...
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. <mailto:personal_submersibles at psubs.%0b org>
org>
To: Personal
Submersibles General Discussion <personal_submersibles at psubs. <mailto:personal_submersibles at psubs.%0b org>
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. <mailto:personal_submersibles at psubs.%0b org>
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. <mailto:personal_submersibles at psubs.%0b org>
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. <mailto:personal_submersibles at psubs.%0b org>
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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