Drying Out
Posted: Sat Jan 24, 2009 8:44 amFrom: nswsailor (Original Message) Sent: 02/01/2009 03:29
Happy New Year to all Top Hat'ers,
I was just wondering if any Top Hat owners had run aground, by mistake or deliberatly, and had dryed out completely?
What I wanted to know is:-
a) Was the hull damage by the vessels weight?
b) When the vessel was refloated by the tide, did any water get onboard?
c) Did the water cross the deck before the vessel started to float, and if so how far
across/up the deck?
d) Were any other lessons learned by this activity?
e) What was the tidal height change necessary to refloat?
f) Are there any photos?
Phillip
SEAKA
------------------------
Reply
Recommend Message 2 of 7 in Discussion
From: Rob Sent: 02/01/2009 13:46
Hi Phillip and Happy New Year to you too
Your question is interesting for two reasons, one being: are you asking because you have just run aground, or are you intending to?
Having just slipped Isabella and got her back in the water yesterday, I was having a look at the flex in the topsides as I was giving them a buff up. I would think that with so much of the weight in the keel, if she was lying on sand or mud there would be only superficial damage. However a rock against the hull anywhere, but especially above the water line I would think could quite easily penetrate given the movement that would also occur.
As for how she'd float again from lying over...without actually trying it out.... you'd need to estimate the lying angle and then see how much volume of boat for buoyancy gets submerged before the washboard start taking on water.
Good luck getting the answer!
Smooth sailing,
Rob
Isabella II
--------------------------
Reply
Recommend Message 3 of 7 in Discussion
From: nswsailor Sent: 02/01/2009 14:15
Good Morning Rob,
No I haven't done it yet, or hope to unintentionally.
The question arose because I have noted that quiet a few yachts go aground at the Cattle Crossing up in Queensland and I became curious about what would happen if a Top Hat went aground. Nobody has ever mentioned this on the site so I have asked the question. I am sure there will be problems with Hull flex between the three marks.
And, no I do not want to try this out just to see what would happen .
The alternative of course would be to have legs, such as ATOM had, see http://www.atomvoyages.com/articles/articles.htm
Phillip
SEAKA
-----------------------
Reply
Recommend Message 4 of 7 in Discussion
From: taunto3 Sent: 05/01/2009 15:01
G,day Rob. This is an interesting topic which i have often mused over but have never been game enough to try out. Here in Callala Bay which is part of Jervis bay we get batted a fair bit from the southerlys at our moorings, consequently if the mooring is not up to scratch it will let go and the yacht that was attached will end up on the beach on its side, this normaly happens about four times a year and most boats are towed off by some type of power vessel with minimal damage to paint and some times water inside depending on the type of vessel. Before christmas a beautiful Top Hat called Parvo deicided that it had hung around on the mooring to long without an outing so she took herself for a trip up onto the beach where she stayed for 24 hours before being towed off and sercured again. Apart from losing some antifoul she put a crack through the fiberglass about 12 inches long and 4 inches above the plimpsel line, she is now in Kanga 's yard awaiting her repair. I have also seen a large Crother Kat put on the beach so that repairs could be made, unfortunatley they put it on a rock that was unseen and it went through the hull. Cheers Taunto...
------------------------
Reply
Recommend Message 5 of 7 in Discussion
From: nswsailor Sent: 05/01/2009 22:34
Taunto,
Do you know what mk it was?
Where was the crack in, say, relation to the windows?
Do you think the crack was caused by the grounding action of the waves or some other cause?
Do you think you can get some photos?
Do you know the owner and would they tell us what happened?
Hope you cann help us, as fore warned is forearmed!
Phillip
SEAKA
------------------------
Reply
Recommend Message 6 of 7 in Discussion
From: taunto3 Sent: 06/01/2009 15:51
Good morning Phillip,Parvo is a mark 2 and has the original owner who told me recently that he is thinking of giving sailing away in a cupple of years because he'll be eighty,he love's his top hat and never misses the opportunity to tell everybody how well his boat looks after him.The crack is under the saloon windows, and i would say that it was the shore break that did the damage,next weekend i may get to speak to the fellows that recovered her and will let you know if there is any other perinent information .As for photo's Parvo is at Huskussion and i'm at Nowra (thats 30 klm) there is a chance i will go out there this arvo , if i make it there i will get some photo's .cheers Taunto.
---------------------------
Reply
Recommend Message 7 of 7 in Discussion
From: nswsailor Sent: 07/01/2009 02:56
Thanks Taunto,
I was discussing this today with John (Longdeepthinker) and we came to the conclusion that it was the action of standing up before the interior flooded that had us most concerned.
So that is the point we are really interested in, ie at what point (level of water) on its side did PARVO start to float?
Phillip
SEAKA
Happy New Year to all Top Hat'ers,
I was just wondering if any Top Hat owners had run aground, by mistake or deliberatly, and had dryed out completely?
What I wanted to know is:-
a) Was the hull damage by the vessels weight?
b) When the vessel was refloated by the tide, did any water get onboard?
c) Did the water cross the deck before the vessel started to float, and if so how far
across/up the deck?
d) Were any other lessons learned by this activity?
e) What was the tidal height change necessary to refloat?
f) Are there any photos?
Phillip
SEAKA
------------------------
Reply
Recommend Message 2 of 7 in Discussion
From: Rob Sent: 02/01/2009 13:46
Hi Phillip and Happy New Year to you too
Your question is interesting for two reasons, one being: are you asking because you have just run aground, or are you intending to?
Having just slipped Isabella and got her back in the water yesterday, I was having a look at the flex in the topsides as I was giving them a buff up. I would think that with so much of the weight in the keel, if she was lying on sand or mud there would be only superficial damage. However a rock against the hull anywhere, but especially above the water line I would think could quite easily penetrate given the movement that would also occur.
As for how she'd float again from lying over...without actually trying it out.... you'd need to estimate the lying angle and then see how much volume of boat for buoyancy gets submerged before the washboard start taking on water.
Good luck getting the answer!
Smooth sailing,
Rob
Isabella II
--------------------------
Reply
Recommend Message 3 of 7 in Discussion
From: nswsailor Sent: 02/01/2009 14:15
Good Morning Rob,
No I haven't done it yet, or hope to unintentionally.
The question arose because I have noted that quiet a few yachts go aground at the Cattle Crossing up in Queensland and I became curious about what would happen if a Top Hat went aground. Nobody has ever mentioned this on the site so I have asked the question. I am sure there will be problems with Hull flex between the three marks.
And, no I do not want to try this out just to see what would happen .
The alternative of course would be to have legs, such as ATOM had, see http://www.atomvoyages.com/articles/articles.htm
Phillip
SEAKA
-----------------------
Reply
Recommend Message 4 of 7 in Discussion
From: taunto3 Sent: 05/01/2009 15:01
G,day Rob. This is an interesting topic which i have often mused over but have never been game enough to try out. Here in Callala Bay which is part of Jervis bay we get batted a fair bit from the southerlys at our moorings, consequently if the mooring is not up to scratch it will let go and the yacht that was attached will end up on the beach on its side, this normaly happens about four times a year and most boats are towed off by some type of power vessel with minimal damage to paint and some times water inside depending on the type of vessel. Before christmas a beautiful Top Hat called Parvo deicided that it had hung around on the mooring to long without an outing so she took herself for a trip up onto the beach where she stayed for 24 hours before being towed off and sercured again. Apart from losing some antifoul she put a crack through the fiberglass about 12 inches long and 4 inches above the plimpsel line, she is now in Kanga 's yard awaiting her repair. I have also seen a large Crother Kat put on the beach so that repairs could be made, unfortunatley they put it on a rock that was unseen and it went through the hull. Cheers Taunto...
------------------------
Reply
Recommend Message 5 of 7 in Discussion
From: nswsailor Sent: 05/01/2009 22:34
Taunto,
Do you know what mk it was?
Where was the crack in, say, relation to the windows?
Do you think the crack was caused by the grounding action of the waves or some other cause?
Do you think you can get some photos?
Do you know the owner and would they tell us what happened?
Hope you cann help us, as fore warned is forearmed!
Phillip
SEAKA
------------------------
Reply
Recommend Message 6 of 7 in Discussion
From: taunto3 Sent: 06/01/2009 15:51
Good morning Phillip,Parvo is a mark 2 and has the original owner who told me recently that he is thinking of giving sailing away in a cupple of years because he'll be eighty,he love's his top hat and never misses the opportunity to tell everybody how well his boat looks after him.The crack is under the saloon windows, and i would say that it was the shore break that did the damage,next weekend i may get to speak to the fellows that recovered her and will let you know if there is any other perinent information .As for photo's Parvo is at Huskussion and i'm at Nowra (thats 30 klm) there is a chance i will go out there this arvo , if i make it there i will get some photo's .cheers Taunto.
---------------------------
Reply
Recommend Message 7 of 7 in Discussion
From: nswsailor Sent: 07/01/2009 02:56
Thanks Taunto,
I was discussing this today with John (Longdeepthinker) and we came to the conclusion that it was the action of standing up before the interior flooded that had us most concerned.
So that is the point we are really interested in, ie at what point (level of water) on its side did PARVO start to float?
Phillip
SEAKA