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Old 11-18-2017, 01:41 AM   #21
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Hi,


When considering the PSS seal to break, can it come from shaf cutlas bearing, so much water that the vessel will sink or lose stabilitys?


The gap is, however, quite small, of course the diesel raw water pump brings the cooling line to the PSS seal, but how much water can there come from?

I am moved by the PSS rubber off the carbon and let the air out of the boat in the water winter storage out of the water. I do not think water comes in at worrying speeds that my pump would not be able to remove it, this is just an estimate?

Is any one wiser to calculate this theoretically?


NBs
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Old 11-18-2017, 06:30 AM   #22
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There is a large underwater “jetty” just outside of the KW channel.

At high tide it probably sits 3’ underwater. I have almost hit it trying to cut the corner on the channel marker.

Wonder if this was the same location.
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Old 11-18-2017, 07:35 AM   #23
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For those with PSS seals, a shaft zinc placed next to the seal is added insurance against slippage forward. Many vessels have a multitude of through hulls that are poorly placed and seldom checked or valves frozen. One infrequently mentioned is the macerator or head through hull. A big ouch if one of these lets go. Or a poorly installed Airmar, yada yada.

There are so many ways for a boat to sink beyond the most common, going aground.
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Old 11-18-2017, 07:58 AM   #24
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Originally Posted by k9medic View Post
There is a large underwater “jetty” just outside of the KW channel.

At high tide it probably sits 3’ underwater. I have almost hit it trying to cut the corner on the channel marker.

Wonder if this was the same location.
That fits the "5 miles off the coast" report by the son.
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Old 11-18-2017, 09:12 AM   #25
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I too dont like dripless seals but that boat webt down too fast for a seal failure. Gore packing is virtually dry.

In the past I have put large rubber plumbing pipe connectors as collars around shafts that tended to spray, Just split them and attach to the box extending over the seal area with hose clamps.
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Old 11-18-2017, 09:52 AM   #26
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5 miles north of Key West is when it starts to get really shallow.....

http://www.charts.noaa.gov/OnLineViewer/11441.shtml

I remember being pretty stressed leaving this “underwater jetty” when I was heading from KW to Ft Myers, and I was there early in the AM and it was calm. Don’t think I would want to try to negotiate that at night when rough.
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Old 11-18-2017, 10:51 AM   #27
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Did anything about this appear in any newspaper? I haven't found it. Link to the facebook discussion, please?
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Old 11-18-2017, 11:40 AM   #28
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It is listed in the Key's News 11/17/2017
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Old 11-18-2017, 01:01 PM   #29
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Quote:
Originally Posted by k9medic View Post
There is a large underwater “jetty” just outside of the KW channel.

At high tide it probably sits 3’ underwater. I have almost hit it trying to cut the corner on the channel marker.

Wonder if this was the same location.
It wouldn't be the first one sunk by that jetty.
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Old 11-18-2017, 01:08 PM   #30
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I remember being pretty stressed leaving this “underwater jetty” when I was heading from KW to Ft Myers, and I was there early in the AM and it was calm. Don’t think I would want to try to negotiate that at night when rough.
Yea, not a jetty to get too close to. I used to dive for lobster out there and there are some jagged rocks out there.
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Old 11-18-2017, 01:17 PM   #31
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Did anything about this appear in any newspaper? I haven't found it. Link to the facebook discussion, please?
https://www.facebook.com/holly.v.fra...location=group
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Old 11-18-2017, 02:03 PM   #32
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Part of the jetty is labled " Awash at mean high water" so in 6 foot seas, at 3 am that could be hard to see......
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Old 11-18-2017, 02:18 PM   #33
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I too dont like dripless seals but that boat webt down too fast for a seal failure. Gore packing is virtually dry.

In the past I have put large rubber plumbing pipe connectors as collars around shafts that tended to spray, Just split them and attach to the box extending over the seal area with hose clamps.
There's also quite a bit of water being pulled in there by the engine.....
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Old 11-18-2017, 02:25 PM   #34
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Yea, not a jetty to get too close to. I used to dive for lobster out there and there are some jagged rocks out there.
My memory may be faulty, but I thought there was even a fatality from hitting that jetty around 2005 or so.
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Old 11-18-2017, 03:10 PM   #35
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I really don’t understand this problem. I have been out northwest channel hundreds of time, it is extremely well marked with various aids and last I was there the remains of Hemingway’s rehab tower was till there too.
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Old 11-18-2017, 03:39 PM   #36
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Its all just speculation......they could have hit some debris, had a mechanical failure, been sunk by a rogue Argentine submarine or aliens may be involved.
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Old 11-18-2017, 03:44 PM   #37
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Its all just speculation......they could have hit some debris, had a mechanical failure, been sunk by a rogue Argentine submarine or aliens may be involved.
Yes and I do find it's interesting that to this point the boat owner has posted nothing about what happened, just thanked others for their comments. Wonder if she will.
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Old 11-18-2017, 05:30 PM   #38
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since the boat wasn't insured, we can pretty safely rule out insurance fraud though.
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Old 11-18-2017, 05:51 PM   #39
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No insurance? Not even liability? Was it a junker?
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Old 11-18-2017, 08:18 PM   #40
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I have no experience with dripless systems. On another forum I belong to, many boat builders favor the Tides dripless over the PSS. As Stated, I have no experience with any of these...
Delfin had a Tides installed when I purchased her, and it leaked like a sieve. Probably dried out, but I replaced it as soon as I could. I am quite comfortable with the PSS, although I back up the set screws with an appropriately sized hose clamp on the shaft so nothing can move if the set screws don't do their job. Replace the bellows on the recommended interval and they seem pretty foolproof. If you don't change the bellows as recommended, the size of leak you are going to experience is a squirt, not a gusher. I like dry bilges.
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