Low displacement coastal cruiser around 40' / 12M

Discussion in 'Powerboats' started by waikikin, Nov 20, 2020.

  1. waikikin
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    waikikin Senior Member

    This just an early investigation and open to existing designs or built suggestions. We've just been looking at some local riverfront properties(which are expensive to me but cheap in the local market) where there's some low air draft issues & some draft issues as well. There's plenty of cheap boxy planing flybridge vessels around but on the thirsty side.
    My thoughts are around a more yacht construction like vessel but in the style of a Halvorsen of years past, full awning over the aft cockpit & either a raised deck or trunk cabin forward. I've just seen images of Nigel Irens "Rangeboat" & the larger Molly Ban which seem on the right track. Happy to depart from inboard to outboard propulsion for internal space and simplifying machinery bearing in mind there might be loads of space for solar on the awning and maybe... very maybe electric via generator/etc.

    Just looking for similar pointers and known existing designs. the Axopar are "similar" but the layout and styling seem pointed more at showing off/look at me than all round efficiencies,, great boats but horses for courses.
    Thinking max 1M draft, around 3m air draft max, LOA 12M & beam around the 3.4-3.8M
    One of the vessels that might be converted to fit is the Adams 13M yacht, these seem cheap but not quite there in the "easy living" stakes when it comes to cockpit space- though might be ok with a really well styled targa over the cockpit & removal of mast or forward raking tabernacle system. Just a brain fart at this stage!
    Thanks.

    Jeff.
     
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  2. Mr Efficiency
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    Mr Efficiency Senior Member

    Do you like displacement cats ? I'm not sure I like the general offering of them, but they tick a lot of your boxes.
     
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  3. waikikin
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    waikikin Senior Member

    Hi,
    That's one of my options. I've got the tooling for a 12.4M displacement cat but looking for a simpler lower total surface area boat or a ready built option. That's where the Adams ticks some boxes at low cost for personal use if the mast is removed or drops... like above "brain fart" at this stage. I've got the space to build but lent it to a mate whos taking his time... & I'm keen to mess around with something. Idea is river/estuary/harbour living and a nice run up to GBR per annum. My Sons are grown up, couple still live at home in the burbs though who knows for how long.. My employment might be changing as the corporate dogs snapping at the entitled public servants with their heads in the trough. I'd been looking at a couple of boats in survey as an option but old & worn.
    Thanks.
    J.
     
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  4. bajansailor
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    bajansailor Marine Surveyor

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  5. Mr Efficiency
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    Mr Efficiency Senior Member

    Now that is the thing about catamarans, isn't it, they are like a pleated dress, which has the dressmaker ordering more material than for a simpler dress.
     
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  6. waikikin
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    waikikin Senior Member

    Thanks for the link bajansailor, similar but my outboard hp range I was thinking on might be as low as twin 9.9 four strokes say 5-6 knots to potentially twin 90/100s & 10 or low teens . looking for quiet river cruising and or some reliable coastal passagemaking at 9-10.
    The Halvos are fairly traditional, my wish is for the trad look including an awning covered cockpit- the entertaining back patio/alfresco area.. upload_2020-11-22_14-28-15.png
    The Axopars just a comparitive, with ob power at a similar length though the headrooms low in accommodation areas- the Axos wouldn't look wrong with a 50cal on the front!
    The Irens Range seems closest at this point though there's not much real info on them Rangeboat - Nigel Irens Design https://nigelirens.com/boats/power-boats/rangeboat/
    The Molly May cool but big and exxy - styling is about right 63' Nigel Irens Modern Classic, MOLLY BAN OF DUBLIN - Berthon International https://www.berthoninternational.com/yacht-sales-brokerage/yachts-for-sale/63-nigel-irens-modern-classic-molly-ban-dublin/ as is the fit out though I'de be aiming a little more austere.
    Construction wise I'm thinking 80s/90s race yacht, no exotics just foam & E glass & aiming at about 3 tonne dry, if something as built comes up that might be close enough in the sailing yacht market, got an eye for this as a start point even something like https://www.boatsales.com.au/boats/details/2015-adams-45/SSE-AD-3331213/?Cr=2 this though these are cheapish secondhand.
    Palm Beach 38 is closish too upload_2020-11-22_14-32-4.png

    Jeff.
     
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  7. waikikin
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    waikikin Senior Member

    Yep, two hulls and an in between;)
    Jeff.
     
  8. Mr Efficiency
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    Mr Efficiency Senior Member

    The Masters 34 was a semi-planing boat, still a few around, and I do actually recall seeing one with twin outboard power, might have been the only one ever though. Normally a Perkins diesel shaft drive getting into the mid-teens knots.
    0_4.jpg
     
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  9. Mr Efficiency
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    Mr Efficiency Senior Member

  10. waikikin
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    waikikin Senior Member

    Thanks- Good style & ticking boxes. I've always loved the raised deck style probably because lots of the cruisers around when I was a kid were like that. I'm feeling I need to transition from sail & getting a view out of the lounge room & shady helm right up on the list, plus a bit keen to get back into diving- just had some facial surgery from sun exposure also so a warning, not that I can undo despite being careful. Might need to lose the flybridge to sneak up the rivers, pretty sure I worked on one without a long time ago, bloke at the sailing club had one too.
    Jeff.
     
  11. DCockey
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    DCockey Senior Member

    The October/November issue of Professional Boatbuilder magazine has an extensive article about a new 34' Nigel Irens designed LDL day boat which does 15 knots with a 38 HP inboard Diesel. A sidebar to the article mentions that Irens is "currently developing a series of designs based on his open launch Greta’s 26.5' (8.08m) plywood lapstrake hull optimized for production building in wood. These boats would offer
    variations including side decks, a long spray hood, and diesel, electric, or outboard propulsion. The family of LDL launches would be geared to sailboat owners looking for a powerboat, or to anyone interested in efficiency and practical marine electrical propulsion."
    Greta was Iren's original 26' open launch.
    Current Issue - Professional BoatBuilder Magazine (proboat.com)

    Issue 145 has an article by Irens in which he discusses his low resistance design philosophy.
    Professional BoatBuilder - 145 - Oct-Nov 2013 https://pbbackissues.advanced-pub.com/?issueID=145&pageID=102
    Professional BoatBuilder Back Issue Archive (advanced-pub.com)
     
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  12. fallguy
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    fallguy Senior Member

    I think the sor needs work. I don't see you spending a month on the Palm Beach 38. Don't get me wrong. That thing is friggin sexy. But it doesn't look like something I want to spend a month on. The cabin berth is down under and no fly so you'll feel undersea a lot.

    I also don't want to spend a month rolling side to side. The Masters 34 Flybridge has all the looks of a boat that rolls all day and even at night when you get up to take a leak. If it planes; it is bound to be pretty flat aft and do what the sea wishes.

    The cat does not roll, but damned expensive to slip. Sometimes they make you get a double, othertimes extra footage.

    But I'd try to find something with reputable seakeeping.

    Facebook group trawler living and cruising has a lot of folks buying trawlers that seem well suited.
     
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  13. DCockey
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    DCockey Senior Member

    That depends on you expectations. We have spent a week numerous times on our 20 foot sailboat with two berths and barely sitting headroom. We consider it as a very comfortable alternative to sleeping in a backpacking tent. For us the Palm Beach 38 would be luxury.
     
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  14. DCockey
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    DCockey Senior Member

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  15. fallguy
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    fallguy Senior Member

    Oh, I understand adaptation. I jist think a month aboard the PB38 would get a bit tiring. The issue is how long does he plan to stay aboard? 6 weeks or 6 months? My boat build is probably okay for a week or three and a day or two at a b&b, but I don't fancy 6 months on it. Not the design intent.

    So, you have to polish the SOR and pin down these details.

    I stayed recently here in frozen Minnesota on a sunny south facing beach. Could maybe go 2 weeks here before having solidly enough sand everwhere. The skiff in the foreground got me there.

    A121FC02-317D-4148-9D06-D1BE306EDF83.jpeg
     
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