On Jun 11, 4:45*pm, Bob wrote:
On Jun 11, 11:58*am, wrote:

Also IIRC most liferafts have a weak link in the teather that should
remain attached to the vessel, unless it sinks in which case the link
will fail allowing the raft to float free.

Fred

My Dearest Fred:
Since I know you are vastly more experinced and knowldegable my self I
though I would paste some info for you regarding lifraft Painter/weak
link/hydro static release. I konw you will read this carfully so you
do not shame yourself again.

By the way, as I am not that knowing what is "iirc?"
Bob

"....NVIC 4-8628 MAR 1986NAVIGATION AND VESSEL INSPECTION CIRCULAR NO.
4 86Electronic Version for Distribution Via the World Wide WebSubj:
HYDRAULIC RELEASE UNITS FOR LIFERAFTS, LIFE FLOATS, AND
BUOYANTAPPARATUS, AND ALTERNATE FLOAT-FREE ARRANGEMENTS1.PURPOSE. This
Circular summarizes the requirements for installing, testing, and
maintainingCoast Guard approved hydraulic release units used with
liferafts, life floats, and buoyantapparatus. Alternate float-free
arrangements not requiring hydraulic releases are also discussed.
2.DIRECTIVES AFFECTED. Navigation and Vessel Inspection Circular 7-69
is canceled, alongwith Changes 1, 2, and 3.3.DISCUSSION.a.General
Description. Hydraulic release units (also referred to as hydrostatic
release unitsor HRUs) are mechanical devices used as -links in the
lashings securing liferafts, life floatsor buoyant apparatus to the
deck of a vessel. If a vessel sinks before the crew canmanually launch
the equipment, the pressure of the water operating on the
HRUautomatically separates it into two parts. This action, at a depth
of between 5 and 15 feet,disconnects the lashing and permits the
unrestrained liferaft, life float or buoyantapparatus to rise to the
surface by its own buoyancy.b.Alternate Float-Free Arrangements. An
HRU is not necessary for satisfactory float-freeinstallation of an
inflatable liferaft, life float, or buoyant apparatus. Enclosure (1)
showsthe installation of a float-free inflatable liferaft in a crib
made of removable loose-fittingstanchions and bars. The height of the
enclosing stanchions will depend on the location ofthe raft on deck
and its exposure to boarding seas. Enclosure (2) shows a stowage rack
ingimbals for preventing a liferaft from being trapped if the vessel
should capsize as it sinks.Apart from the details of the stowage rack,
its location on deck must receive carefulconsideration, especially on
vessels with low freeboards where green water washing overthe deck
could result in the loss of the raft.c.Navy/Coast Guard HRUs. The
first Coast Guard approved HURs evolved from designsmanufactured to a
U.S. Navy specification, MIL-R-15041. Three of these stamped-
metaldevices received approval, although the "Arrow" unit is no longer
in production. Enclosure(3) includes details of these first HRUs, a
table of their operating features, and details ofthe gripes for
restraining the lifesaving device.(1)The Raftgo Model C is produced by
Raftgo Hendry Co. (formerly C.J. HendryCo.) under Coast Guard approval
numbers 160.062/1/0 through 160.062/1/4.Raftgo Model C releases may be
used to secure a single liferaft, life float, orbuoyant apparatus, or
multiple devices.
---------------------------------------------------------------------------*-----
Page 2
Enclosure (1) to NVIC 4-861(2)The Arrow Model 404 was produced by
Arrow Manufacturing Co. under CoastGuard approvals 160.062/210 and
160.062/2/1. The Switlik Model S-880 isessentially identical to the
Arrow HRU, and is produced by Switlik Parachute Co.under approval
number 160.062/3/0. Although these units are marked for acapacity of
up to 3750 lbs., the gripe spring arrangement will deform under
abuoyant load of around 1000 lbs. Therefore, Arrow and Switlik
releases areapproved for single unit installation only. They must not
be used to secure morethan one liferaft, life float, or buoyant
apparatus, or the buoyant load may deformthe gripe spring
arrangement.d.Painter-Securing HRUs. In Europe, painter-securing HRUs
perform the three-part functionof (1) a full-strength securing point
for the inboard end of the sea painter; (2) anattachment point for the
float-free weak link on the same end of the sea painter; and (3)
arelease point for one end of the strap restraining the lifesaving
equipment. In contrast, theNavy/Coast Guard style devices shown on
Enclosure (3) perform only the third of thesethree functions.
Enclosure (4) shows how the painter-securing HRUs differ from theNavy/
Coast Guard type. Unproved versions of these devices are available in
the U.S. foruninspected vessels, and there may soon be Coast Guard
approved versions that can beused on inspected vessels...."

Bob, The HRU and the weak links are not the same thing. Are u sure you
attended lifeboat school?

IIRC = if I remember correctly.

Again what was your excuse for keeping the raft and EPIRB below decks?

Fred

Bob, The HRU and the weak links are not the same thing. Are u sure you
attended lifeboat school?

Again what was your excuse for keeping the raft and EPIRB below decks?

Fred


Hello Fred:
To help fill the void in your life.
Bob

On Jun 11, 9:04*pm, Bob wrote:
Bob, The HRU and the weak links are not the same thing. Are u sure you
attended lifeboat school?
Again what was your excuse for keeping the raft and EPIRB below decks?
Fred

Hello Fred:
To help fill the void in your life.
Bob

Thanks Bob

I hope you smarten up and get a proper mount with a hydrostatic
release if you really sail at all offshore in the PNW for your epirb.
Mount it on your mast base aft if you do not have a better spot due to
flush decks. It is just plain dumb to keep an EPIRB below decks.

I can halfway understand keeping a liferaft in a soft pack in the
cockpit (not Below), if you can not afford a proper hard pack and rack
with a HRU.

What kind of boat do you have takes on so much green water that you
have secured items washing over?
Is that why you never post pictures of your boat? Is it a sunfish?

Please note in this film there are liferafts that see plenty of blue
water washing over the cases, but none are washed over or trigger the
HRU's : http://www.youtube.com/watch?v=zXuzy...eature=related

Is it because your water is green and weighs more that you risk your
life and keep your EPIRB and liferaft below?

Do you plan on attending Liferaft school? Barking out oar commands on
a liferaft is pretty much a waste of time.

Fred

On Jun 12, 6:28*am, wrote:

Thanks Bob

No worries Fred. I simply did a search for "hydrostatic release" and
"liferaft" and copied the first thing that looked eye numbingly
technical. Sorry I didnt read it. I thought yould sink your teeth
into it hoping to find somthing to suport your continued cricisims...

Was it even appropreate to liferafts?

*I hope you smarten up and get a proper mount with a hydrostatic
release if you really sail at all offshore in the PNW for your epirb.
Mount it on your mast base aft if you do not have a better spot due to
flush decks. It is just plain dumb to keep an EPIRB below decks.

Yes I do have a flush fore deck

That depends on boat/area of operation/sea states


I can halfway understand keeping a liferaft in a soft pack in the
cockpit (not Below), if you can not afford a proper hard pack and rack
with a HRU.

Humm again, the boat does not really alow much in the cock pit. A guy
named Magnus Halvorsen designed it for sailing not for sipping limon
drops and knawing on burnt chcken thats raw on the inside from those
rediculus grills hung on the back of nearly every marina queen i see.

*What kind of boat do you have takes on so much green water that you
have secured items washing over?
Is that why you never post pictures of your boat? Is it a sunfish?

I have a Freya 39 built by gannon in 1979. there are a couple reason
for keeping below. but wont wast your time.
Never had a sunfish but paddled around a bay on an 8' orange poly dock
float. that was fun!

*Please note in this film there are liferafts that see plenty of blue
water washing over the cases, but none are washed over or trigger the
HRU's :http://www.youtube.com/watch?v=zXuzy...eature=related


Racers........they seem a rather skilled lot.
Im not concerned about a premature hydro releast. unfortuanly my
little 39.3' boat is a bit smaller than that race thingy. each
situatoin requires a diffrent installation. I agree on deck is best
if............. but i dont so....... it goes below.


*Is it because your water is green and weighs more that you risk your
life and keep your EPIRB and liferaft below?

Yes, i thought eveyone nu about the electromagneic spectrum and the
specific gravity of green water compared to blue and brown in a
breaking wave hit. As I am sure you relize you mus apply the princple
of Partial Presure to a hydrostatic realease mechinism. Consider the
following formula (PP H2O x .445) / (64 lbs/cuft x sq root 14.7 moles)
( speed of 2.031 meter per second per meter sq) = Hydrostatic Release
Factor of 1.48


Do you plan on attending Liferaft school?


I am hurt. I thought you read every word I wrote
Yes, I did recieve my Lifeboatman and Proficiency in Survival Craft
(LB &PSC) certification.
And yes we got to row a boat around, Give Way All ...... Together.
the one I liked was Toss Oars. I was thinking of you every time I gave
the command Toss.

*Barking out oar commands on
a liferaft is pretty much a waste of time.

I have no reason to argue for the USCG. I suggest you direct your
comments to them.

Fred

Have fun fred. I think I need to do somthing today.....
Bob

On Thu, 12 Jun 2008 09:33:36 -0700 (PDT), Bob
wrote:

Have fun fred. I think I need to do somthing today.....
Bob

Spelling lessons perhaps?

On Jun 12, 4:18*pm, Wayne.B wrote:
On Thu, 12 Jun 2008 09:33:36 -0700 (PDT), Bob
wrote:

Have fun fred. I think I need to do somthing today.....
Bob

Spelling lessons perhaps?

Nah, spelling lessons..... I dont need no stinkin spelling lessons.
Thats one of the great things bout this place. Dont have to worry bout
impressing anybody wit my spelling. But for support of all the non
spellers, there are no links/associations/causal relationships between
crappy spelling and intellegence (how ever ya wanna operationalize
intellegence). But it must really get to yall who love Scrabble and
attempting the NY Times Cross Word Puzels

Catholic School Bob

On Fri, 13 Jun 2008 12:37:44 -0700 (PDT), Bob
wrote:

But for support of all the non
spellers, there are no links/associations/causal relationships between
crappy spelling and intellegence (how ever ya wanna operationalize
intellegence).

Perhaps, but it doesn't do much for your credibility to sound like a
half wit hillbilly.