TWL: Anchoring under potential storm conditions
At 11:46 AM 12/19/01 -0500, you wrote:
the discussion going on here. Read it. There is obviously lots to learn
based on what I see on the TWL. If you think this is a commercial, thank
god for social security to sustain life while writing<g>!
Earl,
I can't write effectively about things I know little about, so I avoid
chiming in on how to cook at sea, where to go for places I have never been,
etc.
If you are busy turning what you know and have learned into written
material, books for sale(sail), then more power to you. In most cases the
rest of us would find out about your little secret pretty soon and then you
would be harassed with umpteen questions anyway. Better to hunker down and
take your medicine like a good boy.
I don't think hardly anyone will care if you write about what you know,
since you can't very well take over the forum, singlehanded. And as for
making money from writing.
I am not aware of anyone who makes any serious money writing for the
boating trade. ALthough I have heard a rumor that old delivery skippers
don't die they just retire and write. for a LIVING and that kills them.
Regards,
Mike
Capt. Mike Maurice
Near Portland Oregon.
I have always worried about tropical cyclones and would never have taken
this route so early in the season. However, Kosrae is probably one of the
best hurricane havens in Micronesia. I have gotten myself in trouble in the
past for mentioning one of my books in TWL so I am going to mention 2 this
time as it may be my last and the amount of guessing going on in this
subject has to be reduced. (Bob, I'm just using your post as a vehicle to
get a message out. Actually I think your words are quite appropriate). You
can find out all about Kosrae and the whole Manila Galleon Route in
Landfalls of Paradise. I have been there and done that and it is stupid to
guess when valid information and experience is available.
As for anchors, the new Revised Second Edition of The Complete Book of
Anchoring and Mooring is now on the market and (surprisingly!) covers all
the discussion going on here. Read it. There is obviously lots to learn
based on what I see on the TWL. If you think this is a commercial, thank
god for social security to sustain life while writing<g>!
Earl
PS1 I'll take up the matter of USPS if I survive this outpouring on the
TWL.
PS2 Thanks to hollowbox for solving the Digest problem
Thanks for the post. And thanks for letting us know that the revised
edition of your anchoring book is available. I found the first to be
astoundingly useful and informative.
Best,
Steve
Steve Dubnoff
Nauticat 40 M/S, Pyxis, in Washington
sdubnoff@circlesys.com
Listees
It is interesting that to power the newer cars they seem determined to go
to 36 volts as a new standard. I saw this article and thought about the
implications for trawlers. Seems they are talking about big munbers rather
quickly. Are the current Inverters/pumps/electronics to become obsolete?
Snipped From http://www.msnbc.com/news/674071.asp
Voltage labels on batteries represent an average of sorts 12-volt
batteries actually support 14-volt systems; so when the power is tripled,
the new batteries are labeled as 36 volts, which can actually crank up to
42 volts when the car is running.
The number of new automobiles with 42-volt electrical systems is expected
to surge in the next decade.
2002 46,000
2003 155,000
2004 606,000
2005 871,000
2006 2,823,000
2007 4,497,000
2008 7,010,000
2009 10,402,000
2010 12,891,000
Skooch 42 Hatteras LRC
Worton Creek Md.
David Stahl
Kennett Internet Services, 112 S. Union Street, Kennett Square, PA 19348
610-444-9008 Visit our web site at http://www.kennett.net
Remember kellets?
"Complete Book of Anchoring and Mooring" has an excellent chapter on kellets
and has been a guide to me in experimenting with them.
This text, among many others, takes the general position that there is no
substitute for scope, kellets and 110lb Bruce included.
Richard
At 02:37 PM 12/19/2001 -0500, David A. Stahl wrote:
It is interesting that to power the newer cars they seem determined to go
to 36 volts as a new standard.
<<< snip>>>
Are the current Inverters/pumps/electronics to become obsolete?
REPLY
As a practical matter NO! At least no more so than 12V became obsolete
when some of the high end boats went to 24V
The push for the automotive world is the need for greater fuel
efficiencies which can only be achieved by more extensive use of
eledcrtical controls and solenoids driven by micro processors.
While this may extend into marine diesel engines there is no reason for
extending this to the rest of the trawler.
In addition there is such a huge installed base of automotive, RV and
marine devices that are 12V that the after market will continue to
support it for some years to come.
So your present 12V or 24V equipment will remain viable for some time to
come.
What you are likely to see is new engines with digital controls and
starters that require 36 volts and a separate system for the house
power. This can be either 12V, 24V or 36V.
This is no different than what is often done right now. We have a small
OEM alternator for charging the start battery but we add a heavy duty
alternator to charge the hosue bank - even when the hosue bank is the
same voltage. So why would it be more complicated to have a 36V start
and atenator and a 12Vor 24V house system?
I have been working with multi-voltage systems on highway coaches and
boats for some years now.
I really do not see why this should be so complicated.
Those of you with 32V older boats already have a similar situation. You
use a 32V house system but a 12V system for your navigation gear plus
some new appliances and entertainment systems that only come as 12V
powered.
I have also seen old boats repowered with 12V start engines but
retaining the 32V house systems.
If I was building new right now; I would go with a 24V systtem. There
are enough 24V appliances and equipment that such a choice is
feasible without undue expense.
If I had an older boat with an existing 32V system plus a 12V nav +
entertainment addition, I would wait until 36V became common and then
upgrade. Powering with 36V isntead of 32V means slightly less current
for the same power so the wires will not have to be changed.
Accessory and equipment manufacturers will produce 36V products when the
engine makes switch; not before.
My partner is currently rewiring an older boat in Oakland right now and
the approach is to go with 24V power, start and charging but install
a 24V to 12V DC-DC converter at point of use when it isn't economical
to upgrade the appliance.
Vacuuflush and refrigerators are the most troublesome. We calculated it
is cheaper to buy and install these DC converters than it is to replace
the appliances. These converters can be had in rating up to 40 amps @ 12V
which is enough for all but the largest appliances and such things as
anchor winches.
Since we are changing the old 12V system to 24V the exisitng wire can
be used if the insulation is okay and there is no corrosion. Overhead
lighting, wall switches etc. are most likely to remain since these are
usually not badly deterioated.
Instead of wiring the batteries in paralle the new bank will be series
parallel, but have the same capacity. In this way the same batteries will
still fit and the boxes wil not have to be changed. In the case of
lighting fixtures, the cnage amounts to a bulb change.
The main power cables and bilge located wiring is what will need
replacement due to water damage.
Cheers
Arild Jensen
The Electronic Navigator