Project OBD ( cabin cruiser )

  1. W.olly

    W.olly Member

    Messages:
    1,907
    Location:
    Radcliffe, Manchester
    Now we can let the fun begin properly. Its taken time as said in last post i have been sorting the house out with a few jobs and finishing of a few jobs. on Khashoggi.



    Today i took up this wee beast for the sole purpose of getting gear down the boggy field to Cozacan, and be lazy in the good weather.



    I paid £100 for it and fitted decent tractor tread tyres, new drive belts and battery. I am happy to say it did the job with ease even pulling the trailer. Its We did get stuck once but its finding the best route through the field where its less boggy. A quick bounce up and down to get traction back and away we went again.



    You could say boys and toys but this is the only way i will be getting gear to the boat, cant see me carrying 8x4 sheets and gear 600yrds nowadays.



    [​IMG][​IMG]





    Sooooo



    Next weekend its rip out the what i can, lining first and decide if i want to remove the inner skin which will give maybe 10mm more heard room as i am still undecided on which insulation to go for. Its either PIR again or spray foam, then theres the 3M to look at but that as thick or thicker than the 25mm max i want on the cabin top and sides down to the gunnel.



    On deciding what to do there i need to remove all the windows and get the glazed. Along with making a rear cockpit screen and hardtop. I have Sapele int workshop for the rear cabin door frame work. Also still cant decide if to make a full timber door or GRP one.



    I am off already with cant bloody decide arnt I.



    Now a little happy but a little irritated as T now wants to go with me on the idea of living on a boat / very long term cruising and it was either get a bigger boat or this Norman, the Norman being a leisure boat as things were different back then.



    I was/am considering extending it by another ten foot as that would help a lot with a liveaboard/long tern cruiser. That will not get in the way on the plans ahead for the next 6 months as lots to do. Just to think on.



    Well that aside for me to sleep n lets crack on [​IMG]
     
  2. zx9

    zx9 Member

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    3,460
    Location:
    South East London
    No can see pictures
    :(
     
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  3. Seadog

    Seadog Forum Supporter

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    4,593
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    NE London - UK
    Nope, no pictures.
     
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  4. W.olly

    W.olly Member

    Messages:
    1,907
    Location:
    Radcliffe, Manchester
    Hard work this picture lark on here nowadays. always worked in the past. Just of the tractor anyway, no boaty thing a ssuch.

    try again

    [​IMG]

    [​IMG]
     
  5. jpmillermatic

    jpmillermatic Member

    Messages:
    806
    USA-NY
    amazing what you can find for 100 bucks...looks good!

    JP
     
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  6. fixerupper

    fixerupper Member

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    1,502
    Location:
    Crete Greece
    The amount of work that is going to save you ! for 100 quid ..welldone..
     
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  7. W.olly

    W.olly Member

    Messages:
    1,907
    Location:
    Radcliffe, Manchester
    Well what a turn up for the books. SWMBO has said it woul e best to fetch the boat home to rebuild.....and agrees with me to extend it :):)



    Just need to see if an aritc can get down the street to collect it when its extended to 44 foot from the 32. Be fun if i did that and i could get it out of the garden lol. Cant believe i forgot the company that launched it a few month ago as i will email then to see what they think.

    :):)
     
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  8. jpmillermatic

    jpmillermatic Member

    Messages:
    806
    USA-NY
    ever hear of Mike Mulligan and the Steam Shovel childrens' story?....

    SWMBO is on board!....thats awesome. sounds like a very challenging project. How on earth do you lengthen a boat like that?


    JP
     
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  9. Farside

    Farside Badly Welded Man

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    Ireland
    W.olly likes this.
  10. addjunkie

    addjunkie Member

    Messages:
    5,259
    Location:
    Northumberland. Reet oot in the sticks
    Cutting and shutting ships is actually more common than folk realise, this one had a whole new mid section in the 90s in Spain. They are after all build in sections now and just welded together.

    IMG_0568.JPG


    However I fear that the extra length of a motorboat may cost more than its worth as with many things. I also suspect SWMBO wants it home, so he comes home with it!
     
  11. W.olly

    W.olly Member

    Messages:
    1,907
    Location:
    Radcliffe, Manchester
    SWMBO`s idea it is aswell to fetch it home, if we can that is, hope so. she is a bloody diamond :)

    Up to know the idea is to make a sliding/extending yard trailer. Plonk boat on it, put a frame around the shell either side where the cut is going to be and this will hold the shell inplace/shape when it has been cut. Then pull the trailer apart to give required gap/length.

    Then just a matter (LOL) of first filling the gap, a good backing fixed to the shell across the gap to lay up against. then inside add longitudinal ribs int he corners/chines. aswell as over laminate over the joints to give more strength. Keel will be braced with SS plate.




    Yep the garden i have isnt big enough at 47 foot long, cant complain though, still be a good project :)



    Same as always with me, its not about money as its a challenge and a hobby, Same as my last boat i did. Although now the idea is for extending it is to make it a liveaboard. This is the main reason i want to extend it now. Its a long term project but hope withing 6 years.
     
  12. addjunkie

    addjunkie Member

    Messages:
    5,259
    Location:
    Northumberland. Reet oot in the sticks
    Tractor splitting rails....springs to mind, but where is the cut, at the cockpit.
     
  13. W.olly

    W.olly Member

    Messages:
    1,907
    Location:
    Radcliffe, Manchester
    I have to big axles here of a dam big trailer. if i can find some SHS to slide inside each other that will do the job i reckon, i have plans fro it but all in my head as always, rarely drawn anything up.

    Going to be cut at the Port holes.

    USER_SCOPED_TEMP_DATA_thumbnail1566936295412.jpg
     
  14. addjunkie

    addjunkie Member

    Messages:
    5,259
    Location:
    Northumberland. Reet oot in the sticks
    You could actually score loads of additional space with out extending, but extending the rear cabin, and a sort of platform of the stern to recover outside space lost. Then create a flying bridge over the steering position, that can be tented in.
     
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  15. W.olly

    W.olly Member

    Messages:
    1,907
    Location:
    Radcliffe, Manchester
    Yes, but still not a great deal to gain that way, the rear deck is only about 5 foot and engine is under there. I could loose the centre cockpit and have that as maybe 6 foot space gain on internal cabin but i like the looks of a centre cockpit. I actually want to use the 12 foot as 9 foot rear cabin and 3 foot for the rear deck as the rear bulkhead can be moved forward for this..
     
  16. MCKDAVID Member

    @addjunkie agreed, I think that would be a better option, extending a glass hull would give all sorts of complications. Extending steel hulls is relatively easy just lots of welding and cutting. Glass may be feasible, but to get the same strength back will involve all sorts of additional supports etc...
     
  17. W.olly

    W.olly Member

    Messages:
    1,907
    Location:
    Radcliffe, Manchester

    I totally agree, a ssaid i will be adding longitudinal supports in all corners and chines. plus more.

    Not and easy job like welding also agree. And lot more involved

    You say it would give all sorts of complications, what others but for the extra support is there you see. Thats a point nobody has made yet so good to hear it from somebody at last o i can work on it a si mite of missed things.
     
  18. addjunkie

    addjunkie Member

    Messages:
    5,259
    Location:
    Northumberland. Reet oot in the sticks
    Its quite a flat bottom design, you will need to be careful not to add too much weight midships, though adding strength for obvious reasons, but excessive weight could move the center of floatation dangerously close to the center of gravity, making it more likley to barrel roll. This could be exacisbated with even a small amount of water in the bilge, where the free surface effect could add additional rolling moment.

    Its years since I studied this stuff, but its a majot factor in fresh water designs.

    The hull doesnt seem to have too much for or aft sheer, or tumblehome so not much to worry about there.
     
  19. MCKDAVID Member

    complications? just some I can think of, in no particular order

    how will you fabricate the extension section? cut out of an old cruiser, or fabricated from new to suit? lot of moulding required, or flat sections?.

    how well will the old fibre glass bond to the new sections, ok for a patch, but this is basically cutting her into sections and re- joining. These joints will become your stress points... even if reinforced the old glass a section this size will need loads of long joints (gunwale to gunwale & fore and aft?), presumably staggered to avoid single line joints, (structural failure point)

    making sure the length of supports / reinforcements / bracings are long / strong enough to take in any increased loadings. How will this interface with the interconnecting sections, how will you manage when they run through into other areas you might not want to disturb? They will probably be fairly significant size / weight - who will be calculating / dimensioning them? yourself or will you farm that out to a specialist in structural design?

    stability of vessel, as above, not my field, but you're significantly changing characteristics that have already been calculated and evaluated in the original design. Agreed, maybe less of a concern on a inland canal boat on flat calm water, but nonetheless will create issues that would need to be verified.

    Are you familiar with the design constraints / rules for canal boats? what are their specifications / regulations defining their safety / marine requirements. Certainly are for sea going vessels, but I'm not familiar with inland vessels, but would be worth talking to a marine assessor / inspector for the "Boat Safety Certificate" prior to starting...

    insurance, will they accept these type of major modifications to an existing design? or obligatory examination by marine assessors? could be costly / difficult to find....

    Not saying it can't be done, course it can, but is it worth it? The hull is already old, the work / cost necessary would be significant, additional space benefit would be marginal? think @addjunkie proposed solution would be a lot less ballache in the long run.... otherwise if you really need more space, would it not be more practical to tidy this one up, and move it on at a profit and search for another bigger vessel?

    edit, the other thing is a heavily modified vessel might put buyers off when you get to the point of sale? too many unknowns..........
     
    Last edited: Nov 8, 2019
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  20. W.olly

    W.olly Member

    Messages:
    1,907
    Location:
    Radcliffe, Manchester

    At last, ideas to take on ;)

    Soooooo

    I am looking at the dimension of the 23 and 26 version to see if i can use then as donor section, if not its make my own as fist planned. I know a 23 that i can look at soon. I dont think it will go without a good alteration though,

    Bonding together will be poly inside with a 300mm x 20 mm overlap over the bevel. Outside an Epoxy bevel. the stress points and bracing/ will not be in the way pf anything if my design is good..

    Which i am going to send an email to West Systems team to put this to them for advice on this crack head idea.

    Weight not bothered about the balance, so many folk who know a lot about boats and design said my last boat would fall over as i built a GRP top screen and canopy for it. It hasnt bothered it at all. And they know about boats....well even more now lol.

    There are no constraints on Inland water craft design build in this way.

    Insurance, not thought about that but will do ;)

    Its a project and keeper. I build for the fun, it will cost a lot but it will be a one off and different if it can be done. I could rebuild and sell it on to get a bigger boat, very few GRP cruiser on the canals above 32 foot. There are a few Dawncraft 38 but not my style of boat. Not mad on narrow boats either,

    An extra 10 foot is a big gain on a narrow boat, maybe more than you think.

    When i get a reply, if i do, i will let you know what West Systems say and advice about this project. Be good to know

    Lots to look into yet, but it will be cool.

    Thanks kida for the input ;)
     
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