Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 19-07-2018, 06:00   #16
Registered User
 
thomm225's Avatar

Join Date: Aug 2011
Location: Lower Chesapeake Bay Area
Boat: Bristol 27
Posts: 10,667
Re: Boat doesn't budge in light winds

Quote:
Originally Posted by Bigjim View Post

The telltales are all flying properly but we are not moving.
First telltales aren't fool proof. Sometimes you have to have them in a different positions rather than flying straight back for optimal performance. (it's a feel thing that you will develop over time or I guess these days you can use your GPS)

When you say the telltales are flying are you seeing both sides? Hopefully you aren't stalling with the backside telltale hanging down

You might also try easing the main a bit until you are back up to speed (this simultaneously during the tacking process).......then sheet in slowly

I think of it like a plane using it's flaps at low speed for more lift. Then as the speed increases the flaps are brought in
thomm225 is offline   Reply With Quote
Old 19-07-2018, 06:12   #17
Registered User

Join Date: Dec 2016
Location: Buenos Aires
Boat: SOLD
Posts: 129
Re: Boat doesn't budge in light winds

Quote:
Originally Posted by OldGreyB View Post
My friends had a similar issue on their Jenneau 36i. Took them 8 months to work out the top of the mast was out of alignment. Only needed correct rigging tension to correct permanently.
+10
Mariano is offline   Reply With Quote
Old 19-07-2018, 07:07   #18
Registered User
 
SV_Harbinger's Avatar

Join Date: May 2018
Location: Naskentucket Bay
Boat: Catalina 30
Posts: 197
Re: Boat doesn't budge in light winds

I was thinking the mast tension too, on my old C&C25 I had almost the same problem, port tack as way faster than starboard (over a knot) completely loosening and retuning the rigging completely solved the issue. Something I would at least look into anyway, it doesn't take much to make a big difference.
SV_Harbinger is offline   Reply With Quote
Old 19-07-2018, 07:34   #19
Registered User
 
thomm225's Avatar

Join Date: Aug 2011
Location: Lower Chesapeake Bay Area
Boat: Bristol 27
Posts: 10,667
Re: Boat doesn't budge in light winds

Also don't forget in light air to steer by the uppermost telltales

I didn't mention mast/rig tensioning because racers adjust that prior to every regatta (and sometimes readjust between races)

So he'd be at his light air settings (less mast rake etc) for sure plus using his light air battens etc. And maybe even an old light air blown out main
thomm225 is offline   Reply With Quote
Old 19-07-2018, 08:26   #20
Registered User

Join Date: May 2009
Location: holland michigan
Boat: Gulfstar 50 ketch
Posts: 483
Images: 3
Re: Boat doesn't budge in light winds

My guess is wave/current. Wind is wave direction can vary by alot on the lake ( currently 50 degrees at Port Sheldon. With the specs on your boat 330 length/displacement - 14.9 sail area you have got to be close to the bottom of wind speed at 5 knots. So wouldn't take much to stop you on one tack vs other.
Check mast is centered and clean bottom if you haven't.
ctl411 is offline   Reply With Quote
Old 19-07-2018, 09:11   #21
Registered User

Join Date: Sep 2014
Location: Manila, California
Boat: Cape George pilothouse 36 and a Cape Dory 25
Posts: 608
Re: Boat doesn't budge in light winds

I once owned an Optimus type dinghy that sailed considerably closer to the wind on one tack than the other, I don't recall which was which anymore. It took me a couple of sails to figure out that the centerboard well was skewed several degrees out of line with the centerline. Probably unlikely that your keel is not in line, but I am old and so I look for opportunities to ramble. I hope that when and if you figure it out that we hear about it here.
fatherchronica is offline   Reply With Quote
Old 19-07-2018, 09:24   #22
Registered User

Join Date: Jun 2012
Location: Windsor ON. Canada
Boat: macgregor 26
Posts: 39
Re: Boat doesn't budge in light winds

The most extreme port/starboard difference is when you sail a sunfish or other lantern rig. Like two different boats. How has the boat behaved on other light wind days??
MAC-A-TAC is offline   Reply With Quote
Old 19-07-2018, 09:51   #23
Registered User

Join Date: Sep 2013
Location: Alert Bay, Vancouver Island
Boat: 35ft classic ketch/yawl.
Posts: 1,989
Images: 4
Send a message via Skype™ to roland stockham
Re: Boat doesn't budge in light winds

Making 60% of wind speed in 5kn in a heavy cruiser is pretty good going! I agree that this is most likely a rig tuning issue and that you need tell tails on all the sails to find what is happening. I would say put three on each stripe on each sail, luff leach and center of draft at 1/3 & 2/3 hight. That should give a picture of the wind flow over the sail and show you where the issue is. The other thing I would check is the slot. Is it different at any point on the either tack? In 5kn even slightly depowering the sails can stop you.
roland stockham is offline   Reply With Quote
Old 19-07-2018, 09:56   #24
Registered User

Join Date: Sep 2007
Boat: GibSea 472
Posts: 520
Re: Boat doesn't budge in light winds

Maybe some adverse current was at play?. Anyway, this heavy ancien confortable cruising boats designs are not known for their fantastic performances, and in light airs the iron geny est certainly part of the solution. If you want to go anywhere in time. But if you insist, you alway have the option to create some apparent wind by coaxing the boat upwind, adjust your sails, make it lean on the side to keep the sail shape working, avoid rudder violent movement, etc... All the little tricks that may make the boat start moving...
Elie is offline   Reply With Quote
Old 19-07-2018, 10:44   #25
Registered User

Join Date: Mar 2015
Location: Dundee Scotland, Currently cruising the Baltic Sea
Boat: Vancouver 32
Posts: 35
Re: Boat doesn't budge in light winds

Hi, I think your issue is with the rig. You should first check the mast is vertical and not leaning to one side by using a plum bob from the top of the mast (a halyard and any weight will do as long as it comes from the centre of your mast and will be the same on both sides) then check the measurements are equal on both sides of your mast out to your shroud based. Then look up the back of the mast from the base and ensure itís straight. (This is not as easy as it sounds) (Making any adjustments as you go). Also check your kicking strap is not different on each tack (mine is, itís because of how it comes back to the cockpit) it may be hooking your mainsail leach on one tack.
Good luck
All the best
Colin
ColinIOM is offline   Reply With Quote
Old 19-07-2018, 10:55   #26
Moderator
 
Don C L's Avatar

Join Date: Sep 2014
Location: Channel Islands, CA
Boat: 1962 Columbia 29 MK 1 #37
Posts: 14,573
Images: 66
Re: Boat doesn't budge in light winds

Definitely puzzling. All good suggestions to check so far. I like the idea of loosening the rig and starting over. I'd raise a long tape measure up on the halyard and be sure you have the same measure down to the chainplates on each side. A little easier than a plumb bob and more accurate. I'd add tell-tales to the sails themselves so you can see how the flow is all the way up. I don't bother with the yarn on the shrouds anymore. One more possibility might be that the mainsheet traveler has a stop on it so that when you tack, the car doesn't slide all the way over and the main is in way too tight on that tack and you haven't noticed it. If it is in too tight and flat, the boat will just stop and go sideways especially in light air.
__________________
DL
Pythagoras
1962 Columbia 29 MKI #37
Don C L is offline   Reply With Quote
Old 19-07-2018, 12:28   #27
Registered User
 
GILow's Avatar

Join Date: Sep 2008
Location: On the boat, somewhere in Australia.
Boat: Swanson 42 & Kelly Peterson 44
Posts: 9,282
Re: Boat doesn't budge in light winds

On the whole knotmeter and sense of movement...

Every boat I have sailed that had one gave a different speed reading from the knotmeter paddle depending on the tack. No surprise as they were all offset from the centreline of the boat.

All I have had anything to do with seemed useless at very low speeds and only started to give a reading at around two knots through the water.

Finally, depending on wave angle, when you canít see the bottom, at low wind and boat speeds it can feel like you are stationary. Iíd turn to the gps in these conditions for a second opinion though I have an advantage of sailing in areas of practically no current so gps is a better indication of sailing performance for me than most could expect.
__________________
RefittingÖ again.
GILow is offline   Reply With Quote
Old 19-07-2018, 12:32   #28
Registered User

Join Date: Aug 2013
Location: Guernsey, Channel Islands
Boat: Fisher 31, 9.4 M
Posts: 85
Re: Boat doesn't budge in light winds

Bigjim, you srill have not made clear how you measure speed. The ship's "log" will tell you distance through the water, and speed through the water (TTW), as it is driven, usually, by a paddlewheel.

A GPS will tell you your distance and speed speed (SOG) over the ground. Depending on the speed and direction of the ccurrent, these two measurements will differ, perhaps greatly.

Trying to get a heavy boat moving with only five knots apparent wind speed will be un uphill struggle (metaphorically speaking). Gybing will cause less loss of boat speed (TTW), so you might try that in both directions.

If you are serious about racing, you need to lighten the boat. No water or fuel in the tanks, clear all the junk out, leave the wine cellar ashore, remove the engine.....

More sail, too. 130% genoa, spinnaker, lightweight sheets....

Scrub the bottom of the boat before the race....

Tighten the backstay bottlescrew with a three foot long spanner, wielded by a gorilla...

Get the crew sitting on the windward toerail....

Attention to datail, man.

PS I have a 30 foot boat weighing ten tons, and have given up trying to race it.
AlanR is offline   Reply With Quote
Old 19-07-2018, 12:38   #29
CLOD
 
sailorboy1's Avatar

Join Date: Jul 2007
Location: being planted in Jacksonville Fl
Boat: none
Posts: 20,486
Re: Boat doesn't budge in light winds

Quote:
Originally Posted by Bigjim View Post
I have a Columbia 10.7. It is a big heavy boat so I didn't think it would sail very well in light winds, but I think this is ridiculous.

We race on Wednesdays at my local club. It seems we have light winds every Wednesday. But the last couple of races we experienced the following and can't figure out how to fix it:

The wind was from the Northeast at less than 5 knots and we were trying to sail to the windward mark. On the Port tack we were making 2-3 knots about 45 degrees off the wind. But when we tack over the boat stops. We trim exactly the same way as on the port tack and we sit there, zero knots.

The telltales are all flying properly but we are not moving.

We try to fall off the wind a bit to get some way on but nothing happens.

We jibed back to the port tack and we start moving again 2-3 knots. Tack back and sit dead in the water.

Anybody have a reason or a solution to why we can sail on one tack but not the other?
Bring the anchor up and stow it
__________________
Don't ask a bunch of unknown forum people if it is OK to do something on YOUR boat. It is your boat, do what you want!
sailorboy1 is offline   Reply With Quote
Old 19-07-2018, 14:52   #30
Moderator
 
Don C L's Avatar

Join Date: Sep 2014
Location: Channel Islands, CA
Boat: 1962 Columbia 29 MK 1 #37
Posts: 14,573
Images: 66
Re: Boat doesn't budge in light winds

The rigging may need tuning but I do not agree that it be done with a long wrench under a load. I knew of someone who used to do that when racing until the threads on the turnbuckle on the backstay all stripped off on an upwind leg. Take the load off, like with a topping lift fixed aft for backstay, and then adjust.
Don C L is offline   Reply With Quote
Reply

Tags
boat, wind

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar 3ym30 will not budge! Help...? jellis23 Engines and Propulsion Systems 22 09-04-2019 22:41
Why doesn't this boat have a steaming light? JBP General Sailing Forum 22 13-10-2017 08:11
Inverter light doesn't come on when alternator is going macbeth Electrical: Batteries, Generators & Solar 10 03-08-2015 08:58
Need advice for sailing out of a slip in light winds OldFrog75 Seamanship & Boat Handling 61 24-06-2013 10:41

Advertise Here


All times are GMT -7. The time now is 15:02.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.