345 Experiences & Improvements
Printed From: myHanse.com
Category: Hints & Tips
Forum Name: 345/348
Forum Description: 345/348 Hints, Tips and News
URL: https://www.myhanse.com/forum_posts.asp?TID=7587
Printed Date: 27 March 2026 at 01:44
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: 345 Experiences & Improvements
Posted By: Fendant
Subject: 345 Experiences & Improvements
Date Posted: 26 June 2013 at 12:55
| As the 345 production number exceeds no # 80 it might be useful to open a new thread for sharing the experiences and improvements undertaken for the 345. I am sure other models could also profit from this thread. |
Replies:
Posted By: Fendant
Date Posted: 14 August 2013 at 17:03
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Does anybody know where the fluxgate compass is hidden on a 345 2 cabin version.
I seem to have a deviation of 20 deg. between autopilot heading and COG / magnetic compass.
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Posted By: johnyred
Date Posted: 19 August 2013 at 13:24
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I dont know about the 2 cabins version but on a 3 cabin version it is under the port side sofa. In the 325 which is also a 2 cabin version it is in the locker under a wooden floor cover. Have you performed the fluxgate compass calibration as per owner's manual? Hope this is of some help. |
Posted By: Fendant
Date Posted: 24 October 2013 at 16:03
Well I have found the fluxgate. It is hidden under the fixed floor of the huge cockpit locker mounted to the bulkhead. If you want to get to it you have to unscrew the fixed floor. In my case I would have to remove the grey water holding tank first .
However I was able to inspect with an endoscope linke dto my laptop. This confimed that the fluxgate was mounted correctly with the compass symbol on the top.
 ------------- Frank |
Posted By: Fendant
Date Posted: 24 October 2013 at 16:08
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The problem I am facing with the calibration procedure is as follows:
a)You enter the calibration screen, ok
B)you start the calibration pricess , ok
C) You are told ot turn the bot 360 deg within a defined range of deg/sec, ok
D) You have an indicator of your turn rate which shows 0.0 deg /sec constantly
E) You have the blinking sign "Calibration in Progess "
F) This goes on for more than 5 minutes where you get dizzy making your turns
Finally you push "Abort" ------------- Frank |
Posted By: Swanji
Date Posted: 24 October 2013 at 16:36
And everyone watching you think you have gone crazy  I will be following this thread with interest as we have a problem with the calibration of our winds instruments - IS12 and IS20 ------------- Onwards and upwards Nidri, Levkada, Ionian, Greece Hanse 350 #7, SY Evolution, standard keel, 3YM20 sail drive, 3 cabins, cherry wood interior, teak decks, feathering prop |
Posted By: Mark&Catherine
Date Posted: 24 October 2013 at 17:18
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Mmm we did a to c and the after turns it said complete, I don't know what to say. ------------- 385 ubulukutu sail number GBR 3350L in Turkey and Greece with Mark and Catherine |
Posted By: Matilda345
Date Posted: 29 October 2013 at 08:34
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Hi. This is my first post here. I have the same problem in my 2 cabin 345. The compass was working fine in the beginning when I sailed the boat from Greifswald to Finland but I think it began, when I installed the gofree unit inside the plotter box. The antenna is pointing down through a ventilation hole. So could it be so, that the wifi disturbs the fluxgate operation. I have not cheked the fluxgate position yet, but if it is down there, I think the distance between wifi and fluxgate is less than one meter. I also had lots of stuff in the locker during summer, bicycles, etc. So I think it is not the best possible place for a fluxgate compass.
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Posted By: Fendant
Date Posted: 29 October 2013 at 10:01
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Hello Matilda,
the fluxgate compass is in fact in the port locker hidden underneath the outer fixed panel. It is mounted to the bulkhead of the shower. I checked the mounting position with an endoscope, it is mounted the right way with the compass on the top side.
I have installed the gofree the same way as you did, in the box at the cockpit table with the antenna pointing out. There are no magnetic components near to the flux, so I don't think that this has an influence.
Did you contact your local Simrad expert ? ------------- Frank |
Posted By: Perttu
Date Posted: 29 October 2013 at 16:04
Which autopilot this is? On my system (AP24) you can correct this by changing the offset value... Problem is that fluxgate deviates sometimes up to 7 degrees and this is then displayed throughout the system. This can be caused by items on aft cabin or perhaps by magnetic disturbances in certain areas. Fluxgate was once replaced but no change so I am used to this now... - Perttu ------------- Check my sailing videos - http://www.youtube.com/user/l11483?feature=results_main |
Fendant wrote:Posted By: Matilda345
Date Posted: 29 October 2013 at 16:31
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Fendant, no I did not contact anyone yet. Perttu, the problem is, that the deviation is almost 0 in northern and southern courses, but east-west it is about 15 degrees. So I would need a deviation table instead of one value. My boat is already winterized, so I think the problem will remain until next summer.
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Posted By: Fendant
Date Posted: 30 October 2013 at 03:49
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Hi Matilda,
looks as we have the same problem with a serious deviation on certain courses. The result on my boat is that the AP makes a hefty correction of 20 - 30 deg on certain courses even when you only enter 3 or 5 degs on the OP 10.
Did you also calibrate the AP first and the Flux as 2nd step?
Perttu, constant 7 degs dev. would be fine for me do you have the same value all around the compass rose?
I will watch further comments in this thread and then contact Simrad. Like Matilda my boat is winterized and any remedies can only be tested in April. ------------- Frank |
Posted By: Matilda345
Date Posted: 30 October 2013 at 07:08
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Hi Once I succeeded in calibrating both. It helped a little, but did not last long. Then I have had the same problem, not been able to calibrate the compass. It just does not get completed. And yes, it's very exciting to use AP, when it makes large corrections specially in our archipelago.
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Posted By: Matilda345
Date Posted: 25 November 2013 at 11:42
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Hi I visited my boat and found the compass under the storage locker floor. I have had my tools and a cordless drill just above the compass. So I guess they are at least partly the reason for the deviation. I will definitely find a new place for them. More information will follow after long and dark winter months. Raimo ------------- Hanse 345 #28, Matilda |
Posted By: Fendant
Date Posted: 25 November 2013 at 17:53
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Hello Raimo,
I had also my tools and the cordless drill there. However before winterizing the boat I removed everything and tried to calibrate the flux. The result was unfortunately  the same. ------------- Frank |