[PUP] Redundancy (was Selen or Kadey Krogen)

[John Marshall]

One of the advantages of redundant electronics is that you CAN go out  
when a number of things are broken, as others are still working.

I ran around all last summer with one of my sounders out and didn't  
fret. I just waited until it was convenient to fix it.

If that had been my only sounder, I would have stayed in port to fix it.

Same would go for one GPS, one Radar, one chartplotter.... likehood of  
dual failures in a given time period is low.

The drawback is that it does cost more to buy and maintain more  
equipment. But done right, you have few days where your travels are  
dictated by equipment failures.

Of course, I wouldn't start a trip with my main engine out (and  
running on wing only), so there are limits to this.


John
On Feb 20, 2009, at 3:51 AM, Truelove39 at aol.com wrote:

> Hi  Scott,
>
> Your  thoughtful post came at a time when I was getting rid of  
> redundancy;
> hence mine!  So you might guess I respectfully  disagree on the need  
> for
> redundancy, which boat builders have taken to preach to  owners so  
> as to maximize
> their profits. Modern  electronics and machinery are pretty  
> bulletproof; aside
> from a close or  direct lightning strike there's no need for duplicate
> electronics, IMHO. We  are seeing more and more people who  will not  
> leave port because
> the wind instruments are inoperable or the AIS isn't  working. How  
> did we
> ever get along before we had all these wonderful gadgets? If  one  
> cannot tell how
> hard and from what direction the wind blows without an  instrument,  
> then one
> should stay ashore. We know many  circumnavigators, some of whom  
> have done it
> more than once, and they don't  have all this redundancy which is  
> often seen
> on coastal boats. Spares,  sure, but not complete systems.
>
> Of  course there's a high "gee whiz" factor in having lots of lights  
> and
> knobs and  switches, and if one has the wherewithal and the desire,  
> by all means
> they  should have their bells and whistles.
>
> I  just uninstalled our 2nd VHF and wired the AIS direct to the  
> antenna,
> eliminating the splitter. Why? Because using 2 VHFs (one on 16 and  
> one on 13)
> has never worked well in practice - feedback and forgetting to turn   
> the other
> one back up - I find it much simpler to use one. I will keep  the  
> 2nd VHF
> aboard as a spare and sell the splitter once we get back to the   
> States.
>
> Regards,
>
> John
> "Seahorse"
>
>
>> c.   The boat is light on current, redundant electronics.  I'd  
>> duplicate  a
> source of chartplotting, radios and autopilot for a cruise of the   
> length
> your considering.
>
>
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