Finding the waterline.

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Re: Finding the waterline.

Post by Ed » Fri Jul 03, 2009 4:27 pm

Any suggestions of floating the boat and going around with a marker pen, or tape will be treated with the derision they so rightly deserve :P

Dave C,

thanks for those methods....I like the idea of using a water-level, but unsure of some of the other methods.

not sure why a laser would give confusing results....but there you go.

thanks all


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Re: Finding the waterline.

Post by ACB » Fri Jul 03, 2009 5:06 pm

Yes, the clear plastic hose pipe method is the best, if there are two of you. It is a two man method.

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Re: Finding the waterline.

Post by Nigel » Fri Jul 03, 2009 6:51 pm

Float it in paint. Job done!

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Re: Finding the waterline.

Post by roger » Sat Jul 04, 2009 11:34 am

Just been chatting with dad who spent his boyhood hanging around a now long gone boat yard at Keyhaven and was apprenticed to local boatbuilder and character Bill Adams. They tended to build and maintain traditional heavy clinker boats like the Lymington Pram and Oxybird along with local fishing vessels.
The method used for the waterline was much the same in many ways as previous posts.
Get the boat level and then chose the points on stem and stern where the waterline should be. They would then take a batten and tack it around the boat. stand back and look at it, move as needed and so on.
On new boats they would mark a small groove along the waterline so you could always find it for antifouling in the future.

Hardly suitable for the Jolly boat Ed but quite interesting.

Dad did say that some of the more experienced chaps did it by eye but if they got it wrong by either method there was a fair bit of ribbing(pun not intended) on the river as it was there for the whole year :shock: :? for all to see.
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Re: Finding the waterline.

Post by jpa_wfsc » Sat Jul 04, 2009 8:52 pm

Nigel wrote:Float it in paint. Job done!

Sorry - nope. Specific gravity wrong you see! on paint your dinghy is going to float a few mm, maybe even cm higher than on water.

Same problem if you sail on the sea and on fresh water - which waterline do you paint to?

Come to think of it - if the crew like pies (ahm!) do you paint a waterline for them, or for a carrot soup type team?


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Re: Finding the waterline.

Post by alan williams » Mon Jul 06, 2009 5:39 pm

Hi Thats why you have boot topping.
Cheers Al

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Re: Finding the waterline.

Post by Michael Brigg » Mon Jul 06, 2009 11:13 pm

Try This...
(21.08 KiB) Downloaded 121 times
:lol: :lol:
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Re: Finding the waterline.

Post by Pat » Tue Jul 07, 2009 1:00 pm

Shearwater should be at the bottom - not for human consumption - given the amount of junk bait, dogfood etc. that the fishermen have been chucking in, the density of the "water" is considerably higher than elsewhere :(

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Re: Finding the waterline.

Post by Michael Brigg » Tue Jul 07, 2009 1:21 pm

I was thinking more about the relative warmth of the water, so on the basis of the heat of Compost, Shearwater stays on top! :(
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Re: Finding the waterline.

Post by Garry R » Tue Jul 07, 2009 1:33 pm

On some venues which would be more polluted than Shearwater one wouldn't bother working out where to paint the waterline - you would just go through the motions!

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