[PSUBS-MAILIST] Gamma unmanned test dive

[JimToddPsub at aol.com]

Hank,
 
I just had to put a subject line to this thread.  I  recalled that Scott 
Cassell did a similar test with Great White in  2012 also in a lake (Hi, 
Scott!).  Here's a link to an article on that  dive.
http://californiadiver.com/scott-cassells-submarine-reaches-500-feet-in-lake
-tahoe/
 
Jim     
 
 
In a message dated 2/7/2014 7:58:56 P.M. Central Standard Time,  
hanker_20032000 at yahoo.ca writes:

 
Alan,
I think the weight of the cable will prevent feeling  anything.  1,000 feet 
of cable, that is a long way!   Also the  sub may come up on any old angle 
all the way from that depth, it  might
 land in my driveway at home lol.


Vance,
Your starting to make me nervous :-)  I will send you the  first picture of 
it back on the trailer.
Hank





 
On Friday, February 7, 2014 6:47:39 PM,  Alan <alanlindsayjames at yahoo.com> 
wrote:


 
 
Your wife, Hank. Now there's a good option, does she know how
to operate the ballast valves?
If the cable started going slack you would know the sub was
coming up & could get out of the way. just keep tension on the  line
with the boat & as long as there is an angle on the cable you won't  get
hit.
Alan

Sent from my iPad
 

On 8/02/2014, at 1:33 pm, hank pronk <_hanker_20032000 at yahoo.ca_ 
(mailto:hanker_20032000 at yahoo.ca) >  wrote:




 
Joe,
My wife, (the brains of the operation)  says the same  thing.  I have to 
agree, I can send it down on the cable and bring it  up on the cable.  The 
auto pilot Alec sent me is a fantastic back  up.  If there is a problem with 
the lifting system, I will just back  away and wait.


Hank



 
On Friday, February 7, 2014 5:27:46 PM,  Joe Perkel 
<_josephperkel at yahoo.com_ (mailto:josephperkel at yahoo.com) >  wrote:


 
 
Hank,


What I don't like about deep water remote testing, is the fact that we  are 
testing against the worst case scenario, a sub full of water. The good  
news of course being unmanned.


Therefore to my mind we must be prepared for that worst case scenario,  
meaning being in the best possible position to recover the sub. That means  
heavy lifting doesn't it?


Sending a grapple down a line requires 100% success in making contact,  is 
that assured? I don't know I've never done it.


So if I had the means to send it down on a cable, that's what I think  I'd 
do.


Joe





On Feb 7, 2014, at 6:08 PM, hank pronk <_hanker_20032000 at yahoo.ca_ 
(mailto:hanker_20032000 at yahoo.ca) >  wrote:




 
PROBLEM, now that I am getting Alec's auto pilot, I run the risk of  the 
sub surfacing violently if it develops a leak and the water sensor  tells the 
sub to surface.  If I have my steel barge above Gamma there  could be a very 
serious collision.  The other option is to forget the  barge and send Gamma 
down with a rope attached as a locator and a way to  slide a cable down to 
retrieve it.  The rope only needs a rubber  float to locate it.  I would put 
a second auto pilot in that relies  on a battery going dead to make it 
surface with a separate hp  source.
What to do hmmm
The other option is use the auto pilot from Alec without the water  sensor 
and have the barge over Gamma with the cable between.  Then  there is a 
safety if the cable fell off or what ever, and if the sub fills  with water I 
can winch it up. 
Hmm , what do you guys think.
Hank





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