Hi there everyone,
I am starting to get ready to paint
of my 28' steel
yacht problem that i have is how do i get a reasonably accurate waterline on her.
She is still an aquatic virgin and never seen the water
and at 40 + years old shes itching to get there, so I'm interested in ways to get my waterline right prior to going in to the water
(give or take a little).
I have heard of a few ways that might work and will details them for you so that you guys can give me your welcomed advice. If by chance other forumites think that all these ways work then that would be good as i could do all three and cross reference them to see if they all come up in the same or similar lines
So here are the ways that i have read about
1. "The easier sounding way"
, according to the design she is meant to have a draft
of 4' 9" so i just measure up from the lowest point of the hull
and then transfer this line all around the boat.
2. "The dodgy sounding way"
Transfer the interior
floor level to the outside of the hull as i have read that the interior
floor should be set at the waterline?
3. "The more accurate old school method i found"
Calculate the volume of the hull by lenght x width x height into cubic feet, then calculate as shown below using my boats total weight.
Then use this old school
boat builders saying that i scrounged of the net
8 pints, 8 pounds, the world around.....
8 pints = 8 pounds, 8 pints in a gallon = 8 pounds in a gallon, 8 gallons in 1 cubic foot and 8 pounds in one gallon
So supposedly 8 gallons x 8 pounds each = 64 pounds in one cubic foot
One cubic foot of seawater = 64 pounds
So take the hulls cubic feet x 64 the divide that number by the number of inches in the height of your hull.
This should give the answer as to how much weight will sink your vessel 1 inch into the water
Then take that weight and divde into my vessles weight and i am meant to have my water line
*** Do this sounds like it will work to the more experienced person out there? If so, how do i do the measurements length width height.
Straight line from point to point? Or follow the curvature of the hull? And then also from what point, e.g from top of hull down round the hull under the keel
back to the top of the hull?
Any help would be appreciated, like all of us I'm on a budget
and where it would be great just to wait until i get back to a boat yard, float my boat, mark the line in water, then re-lift out finish painting etc i would like to avoid that extra cost if possible.
So please accept my thanks in advance and hopefully i will get some knowledgeable replies.