Thread: Strip planking instead of Lapstrake

Howdy Archie

What plans are they?

I can probably tell you whether it is feasible and the advantages and disadvantages.

The biggest disadvantage of strip planking is the extra labour compared to plywood glued lapstrake.

Depends on how much info is in the lapstrake plans though - if the plans are Oughtred's there are huge timesavings because of the detail provided.

Plans from others may be slower to build so may start to be less competitive with strip.

So which plans do you have?

Michael Storer

Originally Posted by Boatmik

Howdy Archie

What plans are they?

I can probably tell you whether it is feasible and the advantages and disadvantages.

The biggest disadvantage of strip planking is the extra labour compared to plywood glued lapstrake.

Depends on how much info is in the lapstrake plans though - if the plans are Oughtred's there are huge timesavings because of the detail provided.

Plans from others may be slower to build so may start to be less competitive with strip.

So which plans do you have?

Michael Storer

Im not too sure what you mean by Oughtred's the plans I have are from build a boat in brookvale.

Archie

Well I just googled oughtred and I now see what you mean and no my plans are not oughtreds.

Strip planking is generally a bit heavier then traditional lapstrake and a healthy amount more then glued lap. If you're lofting from round bilge sections and/or station molds, then lining off for the laps, you could do it, though you'd have to make adjustments to the scantlings in regard to frame spacing if traditional lap, as well as gauging strip dimensions to provide the same longitudinal strength the lapped planks provided.

Originally Posted by archie1979

Im not too sure what you mean by Oughtred's the plans I have are from build a boat in brookvale.

Archie

No problem. If it was an Oughtred plan or other highly detailed one then you would be adding a lot of labour by going to strip planking.

In general the glass inside and out eliminates all the ribs (usually) and it starts to make sense to do all seats in box plywood construction to add buoyancy tanks front and back if they are not there already.

So ... to go back to your original question ...

How thick is the planking in the design? Is the specified planking ply or is it timber?

How long is the boat?

What type of boat - sailing rowing etc? You wouldn't have a picture available (digital camera shot from the plan) or is there a website to check (not so important to have a picture but it would give a bit more info)

Best wishes
Michael

Originally Posted by PAR

Strip planking is generally a bit heavier then traditional lapstrake and a healthy amount more then glued lap. If you're lofting from round bilge sections and/or station molds, then lining off for the laps, you could do it, though you'd have to make adjustments to the scantlings in regard to frame spacing if traditional lap, as well as gauging strip dimensions to provide the same longitudinal strength the lapped planks provided.

Welcome PAR,

Nice to have someone of your calibre here!

MIK

Okay I will have to post some images on here over the weekend as I am away most of the days this week, however I have shown the missus some pictures of the Lapstrake hull and she is quite happy with the traditional look of the mahogany clear finish. So I am still tossing up wether I should stuff with the plans or not.
I will get back to you all with the dimensions and some pictures.
I have the keel nearly finished and its looking sweet

Steve

Some of the finest looking hulls I've ever seen, have been brightly finished lapstakes. I have a fond memory of a 25' double ender of white pine, no stain, just varnish, that was stunning.

And that is a good point too PAR - should not count it out as an option necessarily. Will be good to see some plan images to get an idea about the boat itself and the building method.

Archie - don't put too many up. Just some different views of the hull and one that gives an idea of the construction of the finished hull - often there is a "construction cross section" or something like that showing all the different bits of timber.

Best wishes
MIK