Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 16-05-2012, 18:19   #16
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,772
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Tilting boat

Quote:
Originally Posted by troppo View Post
Haha. At first I thought it was because the spare fuel tanks and spare water containers were on that side but when they were empty and I had extra water on the other side, the problem was still there.

Oh hang on. When I am on the port side it tilts that way and when I am on the other side it tilts to that side. Just because I weight 200 kg it should not be doing that, should it? Nah, joking. The problem is always the port side is lower and I have taken into consideration the moveable weight.
200kg is a lot of weight. way lot of weight. ye tall also????
__________________

zeehag is offline   Reply With Quote
Old 16-05-2012, 18:38   #17
cruiser

Join Date: Aug 2011
Location: Tampa Bay area
Boat: Hunter 31'
Posts: 5,731
Re: Tilting Boat

Quote:
Originally Posted by Ex-Calif View Post
If I really wanted to get after this I would remove everything from the boat that is not nailed down. I would then stick a bubble level on the transom, the longer the level the better.

I would then evaluate what isn't removed and where it is located. Galley on one side? What does the galley cabinetry weigh? Battery location? Mast straight?

If everything check out good I would make a mental note one how I prefer to load the boat.

One my small boat crew position is way more important than basic boat trim. And don't think it doesn't matter on bigger boats either. I've seen 47 footers in races butt down cuz 8 people are in the cockpit.

Thanks, but I'm familiar with the contents of my boat and where everything is, and it isn't accounted for by what is on the boat. As I said, the great bulk of storage is on the PORT side. There's also a 35 gallon water tank on the port side. When the water tank is down and I'm relatively low on diesel (much smaller, 18 gal tank), the boat still tilts, and it tilts the same amount. Whatever is on the boat is having a negligible effect on this. The mast itself is straight. The whole boat tilts.

Based on these observations, I would not undertake the huge task you propose (it's a live-aboard boat). I, and a marine surveyor, and a naval architect have all looked at this.
__________________

__________________
Rakuflames is offline   Reply With Quote
Old 16-05-2012, 18:41   #18
cruiser

Join Date: Aug 2011
Location: Tampa Bay area
Boat: Hunter 31'
Posts: 5,731
Re: Tilting Boat

Quote:
Originally Posted by Ex-Calif View Post
If I really wanted to get after this I would remove everything from the boat that is not nailed down. I would then stick a bubble level on the transom, the longer the level the better.

I would then evaluate what isn't removed and where it is located. Galley on one side? What does the galley cabinetry weigh? Battery location? Mast straight?

If everything check out good I would make a mental note one how I prefer to load the boat.

One my small boat crew position is way more important than basic boat trim. And don't think it doesn't matter on bigger boats either. I've seen 47 footers in races butt down cuz 8 people are in the cockpit.
OK I don't think you're really getting all of this. There's just me on this boat. If I'm OFF the boat it still tilts. You couldn't fit 8 people on this boat -- big living space = smaller cockpit. Four's the limit, but this has been observed by many people when I'm not on.

I appreciate the feedback, but I'm past trying to fix it. it's not a performance issue and the boat is structurally sound. It's just a weird fact about my boat.
__________________
Rakuflames is offline   Reply With Quote
Old 16-05-2012, 18:49   #19
Moderator Emeritus
 
Ex-Calif's Avatar

Cruisers Forum Supporter

Join Date: May 2007
Location: Singapore
Boat: Maxi 77 - Relax Lah!
Posts: 11,514
Images: 4
Quote:
Originally Posted by Rakuflames

Thanks, but I'm familiar with the contents of my boat and where everything is, and it isn't accounted for by what is on the boat. As I said, the great bulk of storage is on the PORT side. There's also a 35 gallon water tank on the port side. When the water tank is down and I'm relatively low on diesel (much smaller, 18 gal tank), the boat still tilts, and it tilts the same amount. Whatever is on the boat is having a negligible effect on this. The mast itself is straight. The whole boat tilts.

Based on these observations, I would not undertake the huge task you propose (it's a live-aboard boat). I, and a marine surveyor, and a naval architect have all looked at this.
Sorry - responded to the wrong post. Meant to respond to Troppo.
__________________
Relax Lah! is For Sale <--- Click
Click--> Custom CF Google Search or CF Rules
You're gonna need a bigger boat... - Martin Brody
Ex-Calif is offline   Reply With Quote
Old 16-05-2012, 19:10   #20
Registered User

Join Date: Jul 2010
Location: Rockhampton, Australia
Boat: No boat, looking again.
Posts: 346
Re: Tilting boat

Quote:
Originally Posted by zeehag View Post
200kg is a lot of weight. way lot of weight. ye tall also????
Hahahah. That's good.

Just because I have a plank running from the v-berth to the quarter berth to give a flat stretch of 15 feet don't mean I am tall. : ).
__________________
troppo is offline   Reply With Quote
Old 16-05-2012, 19:13   #21
Registered User
 
HappySeagull's Avatar

Join Date: Dec 2010
Location: B.C.,Canada
Boat: 29'
Posts: 2,395
Re: Tilting Boat

It is possible that the hull is not equal-sided too, so a measure from keel to sheer might be in order. IE: the mast IS square to the deck but the deck is attached to an unequal hull...
OR the chopper gun went wild on one side..=weight. ...or the resin was kicking off and so was thicker....(late on a Friday and nobody wanted to open a new barrel).
__________________
HappySeagull is offline   Reply With Quote
Old 16-05-2012, 19:13   #22
cruiser

Join Date: Aug 2011
Location: Tampa Bay area
Boat: Hunter 31'
Posts: 5,731
Re: Tilting boat

Quote:
Originally Posted by troppo View Post
Hahahah. That's good.

Just because I have a plank running from the v-berth to the quarter berth to give a flat stretch of 15 feet don't mean I am tall. : ).


Maybe you're just a restless sleeper.
__________________
Rakuflames is offline   Reply With Quote
Old 16-05-2012, 19:15   #23
cruiser

Join Date: Aug 2011
Location: Tampa Bay area
Boat: Hunter 31'
Posts: 5,731
Re: Tilting Boat

Quote:
Originally Posted by HappySeagull View Post
It is possible that the hull is not equal-sided too, so a measure from keel to sheer might be in order. IE: the mast IS square to the deck but the deck is attached to an unequal hull...
OR the chopper gun went wild on one side..=weight. ...or the resin was kicking off and so was thicker....(late on a Friday and nobody wanted to open a new barrel).


I'll never know. It's just one of life's mysteries!
__________________
Rakuflames is offline   Reply With Quote
Old 16-05-2012, 19:16   #24
Registered User

Join Date: Jul 2010
Location: Rockhampton, Australia
Boat: No boat, looking again.
Posts: 346
Re: Tilting Boat

Quote:
Originally Posted by Ex-Calif View Post
Sorry - responded to the wrong post. Meant to respond to Troppo.
I took it as to me : ) [troppo]. Seeing as I am gunna do quite a bit of cleaning and fixing and the boat is small, I reckon I might end up taking off the heavy stuff and doing the bubble level thing. That plus check the mast. With my background in small boats, even kayaks, I know how where the weight goes can be critical.

I will be re-organising the storage on Windchaser so I may as well do some checking of where the weight is now. Like the battery is on the port side but I want to put another one in and I think I will move both to somewhere central.
__________________
troppo is offline   Reply With Quote
Old 16-05-2012, 19:21   #25
Registered User

Join Date: Jul 2010
Location: Rockhampton, Australia
Boat: No boat, looking again.
Posts: 346
Re: Tilting Boat

This is a bit off topic, sorry Troppo. [oh, that's me so it's ok].

There used to be a tourist boat that went over to the Keppel islands and when over there the captain would put out boom nets and people would scramble down and hold on as the water rushed over them. Lots of fun.

One day the boat suddenly tilted seriously with one boom net lifting right up. It tilted because many of the people on board suddenly rushed to the other side. That was the side the lady had just lost her bikini to the rushing water.
__________________
troppo is offline   Reply With Quote
Old 19-05-2012, 04:33   #26
Registered User

Join Date: Jul 2010
Location: Rockhampton, Australia
Boat: No boat, looking again.
Posts: 346
Re: Tilting Boat

Well, I went out to my boat today and used the mainsail halyard from side to side to see if there was any difference. Bit hard to tell with the stretch in the rope but I am thinking there could be an inch difference. That does not seem much. Would that be enough to tilt the boat?
__________________
troppo is offline   Reply With Quote
Old 19-05-2012, 09:48   #27
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,055
Re: Tilting Boat

It is not uncommon for boats to not be dead level.

The mast could be leaning to one side (measure for center on deck, while you're doing the halyard measuring) or it might even have been installed slightly off-center. Nothing's impossible.

But most commonly this is because there is variation in the weight of fiberglass layups, so one side of the boat might be heavier than the other, along with the weight differences from having heads, bulkheads, nav stations, electrical panels, all sorts of options installed. It would cost time and money for a builder to add those all up and balance the trim of each boat during the build.

So you poke around, measure whatever you can, and if your boat simply is out of balance, you either move things around, or add ballast (preferably lead since it will take up less space) or add equipment (extra battery<G>) to trim it out.

Or accept the lean, and recognize that's probably why you'll be slightly faster on one tack than on the other, among other things.

Once you fix the lean, you can work on the fore-and-aft trim. That one makes a speed difference too, depending on water conditions, so you need to be able to work that one in real time.

Of course, if you have really bad luck, a lean that you can't explain and can't trim out just might be caused by a keel problem. Keel damaged in grounding, keel rebedded lopsided...if there's nothing else that explains it and you can't trim it out, the keel IS literally the 800# gorilla in this scene.
__________________
hellosailor is offline   Reply With Quote
Old 23-05-2012, 17:18   #28
Registered User

Join Date: Jul 2010
Location: Rockhampton, Australia
Boat: No boat, looking again.
Posts: 346
Re: Tilting Boat

Did what Atoll suggested, drop a plumb bob from underneath the middle section of the mast step in the cabin down to the bilge. The boat was being held side-on to the wind by the tide so that may have encouraged the lean. I have yet to take everything out but I had moved some water containers to the higher side to see if it would even out. Still more to be done to find the reason.

__________________
troppo is offline   Reply With Quote
Old 23-05-2012, 17:38   #29
Senior Cruiser
 
atoll's Avatar

Cruisers Forum Supporter

Join Date: Mar 2010
Location: gettin naughty on the beach in cornwall
Boat: 63 custom alloy sloop,macwester26,prout snowgoose 37 elite catamaran!
Posts: 9,311
Images: 75
Re: Tilting Boat

Quote:
Originally Posted by troppo View Post
Did what Atoll suggested, drop a plumb bob from underneath the middle section of the mast step in the cabin down to the bilge. The boat was being held side-on to the wind by the tide so that may have encouraged the lean. I have yet to take everything out but I had moved some water containers to the higher side to see if it would even out. Still more to be done to find the reason.

must be the 150 kg of coke the last owners concealed in the hull then lost their nerve when it came to selling it
__________________
my catamaran building project updates http://www.cruisersforum.com/forums/...36#post2502136
atoll is offline   Reply With Quote
Old 23-05-2012, 18:18   #30
Registered User

Join Date: Jul 2010
Location: Rockhampton, Australia
Boat: No boat, looking again.
Posts: 346
Re: Tilting Boat

Quote:
Originally Posted by atoll View Post
must be the 150 kg of coke the last owners concealed in the hull then lost their nerve when it came to selling it
Nah, it was a bale of green leafy stuff which I fed to my guinea pigs. Still, even with that out there is still the lean.
__________________

__________________
troppo is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 23:09.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.