fast cats

Discussion in 'Multihulls' started by wannabeboater, Jul 14, 2009.

  1. Guest62110524

    Guest62110524 Previous Member

    WITH all due respect, it is IMO quite difficult to have speed and safety and strength
    For instance if you go to my gallery there is a 54 mono there She sailed on the Darwin Indonesia rally this year and cleaned up most of the cats
    The reason for this IS that when you load a cat for cruising, the weight climbs so much andof coarse the performance just droops away so that your daily mileage is no better than a good mono
    I like cats, do not misunderstand me
    Try Stuart Bloomfield he was Crowthers chief designer for 10 years
    here is one of his designed for Simon Steffen, I worked a bit on the pricing,
    Yes she is not light but super strong
    Drop STU a line or two
    rgds
    Stu H
    the renders are a start by bhnautika
    the design is to survey and the material is aluminium alloy
     
    Last edited: Jun 21, 2010
  2. wannabeboater
    Joined: Oct 2008
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    wannabeboater Junior Member

    I do agree with what you said, and averaging 7 knts would be fine, i just want her to be able to get up and go when the conditions are right, but if that risks the boat not being very strong, then im not sure, i'd like strength over speed, but there has to be a way for a strong boat to have a peak speed of atleast 15kts. Another reason i want a cat rather then mono is stability, outdoor space, and i love the indoor space as well.
     
  3. rayaldridge
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    rayaldridge Senior Member

    Check out Chris White's designs:

    http://www.chriswhitedesigns.com/

    His Atlantic 57 cat sailed from Bristol to Bermuda in 61 hours. Not bad for a cruising boat on a shakedown cruise.

    Folks who say that multis are no faster than monos are usually comparing stripped-out racing monos to cruising multis. All significant ocean sailing records are now held by multis, a situation that seems unlikely to change any time soon.

     
  4. wannabeboater
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    wannabeboater Junior Member

    thank you for the reply, i will check it out, and i want a cruising cat, not racing i just want it to be fast when i want it to. =]
     
  5. Ulf
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    Ulf Junior Member

  6. wannabeboater
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    wannabeboater Junior Member

    Thank-you so much, i abseloutely love the layout of the gunboat 48. The lines are beautiful, the seat out back with a view is awesome, the two trampolines up front would be very fun. I like the fact of stearing inside, a pilothouse, and how all the windows open. The part i like alot is the kitchen, it has a view, and is in the middle and spacious, all this in a 48ft boat. thank-you. do you know what these go for? and some legitiment testimonials?
     
  7. wannabeboater
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    wannabeboater Junior Member

    Thank you RayalDridge, it looks nice, but do you know of any smaller, i've now reconsidered the size from 35-50ft, wonderful, but not me =/. Thnks to you all for the wonderful information.
     
  8. Stumble
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    Stumble Senior Member

    Wannabe,

    The gunboat 48 is going for around $1.6 million new, plus delivery and outfitting costs. So say 1.7-1.8 all up rigged and ready to go. I couldn't find one on the used market easily so I will leave this as an exercise for the student, :) but any good boat broker should be able to help you find one if they are even on the used market yet. Remember this boat has only been in production for a few years (I think since 2004-5) and many are semi-custom so they may only infrequently hit the used marked if at all.

    One thing about the Gunboat is that they are carbonfiber boats, so there is a significant price premium as compared to a glass boat. It may be worth it to you, but for cruising it seems like a pretty big bite to save a few thousand pounds.

    As for testimonials... Everything I have ever heard about the Gunboats is that they are wondefully built, very fast for their size, well designed, and pretty much the top of the line boats in thier nitch. That being said I have never sailed on one, so I wouldn't take my word for it.
     
  9. rayaldridge
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    rayaldridge Senior Member

    Chris White has a 42 footer that has shown a good turn of speed for a cruising boat.

    These boats are a bit less expensive than some. They have the cockpit forward of the pilothouse.

    http://www.chriswhitedesigns.com/atlantic42/index.php
     
  10. Stumble
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    Stumble Senior Member

    On a side note, many of the cats I have seen have ridiculously small water tanks, requiring either a water maker or modifications to carry more. Now this isn't a problem if you are doing 2-3 day weekend trips, but 60-100 gallons of water just isn't enough for any long duration stays.
     
  11. Guest62110524

    Guest62110524 Previous Member

    wow!!! those are the best looking cats I have ever seen
    Stumble is correct abt tankage But then production monos have inadaquate fuel and water for long passage making
     
  12. Alan M.
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    Alan M. Senior Member

    Most of Bob Oram's boats will comfortably sail at the kinds of speeds you're talking about. Here's a couple of very short (still camera with small memory card) videos I took sailing up the Queensland coast on a Mango 38. This boat was fairly heavily loaded too, I think we had at least 200 bottles of beer aboard, as well as rum, food etc for 4 crew.

    http://www.youtube.com/watch?v=xg0ar4WFkA4

    http://www.youtube.com/watch?v=VXEwR4IJbUY&feature=related

    I recently sailed on an Oram 39C, the same design Masalai is building, across the Gulf of Carpenteria at an average of 8 knots for the 350nm. Peak speed was around 16 knots, and we were sailing pretty conservatively, just using headsails.

    Here: http://www.svdrumbeat.com/id389.htm is some of the log of an Oram 60C which consistently averages over 200nm per day.

    I'm currently nearing completion of an Oram 44C, some photo's are here: http://www.hostmybb.com/phpbb/viewtopic.php?t=254&mforum=easy

    All these boats are built from Duflex, and are immensely strong. I've seen, as has Masalai, a Duflex boat which was smashed against a marina wall for several days in the big Whitsunday's storm which wrecked around 60 boats a couple of years ago, and although obviously wrecked where it came in direct contact with the rock wall, there is absolutely no structural damage beyond that.
     
  13. stubloomfield
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    stubloomfield New Member

    A well designed boat in the size range you are looking at should be able to sail safely and comfortably at 15-20 knots in heavier conditions. Stu H (whoosh) mentioned a 50' aluminium cat I recently designed; it has a payload capacity of over 6 tonnes and should easily exceed 20 knots boatspeed whilst being suitable for sailing in very heavy conditions. If you look here http://www.bloomfieldinnovation.com/coppermine/thumbnails.php?album=5 there are photos of a 45' design that the owners report sails up to 23-24knots peak speed on ocean waves, and will sail an honest constant speed in high teens (we were sailing at 17 knots during trials 7 years ago). This boat is very safe (due to a number of factors including the very buoyant bows) and the owners say the are 20% faster than similar sized boats they cruise with and feel a lot safer in the ocean due to the full bows (no scary stuff); the structure weighs 5 tonnes and the boat is sailing at 14 tonnes (cruising). I also have 56' designs that sail at 22 knots (in strong wind) at 22 tonnes displacement, all from the comfort of a protected helm station http://www.bloomfieldinnovation.com/coppermine/thumbnails.php?album=1

    There are a lot of factors that affect strength, speed and safety and it would take a long time to cover the subject completely, but my philosophy is that all boats should be designed strong enough to handle the conditions they will be sailed in, and good handling is paramount for safety, which subsequently allows more confidence and makes higher speeds possible if you want to sail that way.
     
  14. Guest62110524

    Guest62110524 Previous Member

    thanks for that StuB, I did not realise they were so quick
    Your boats look powerful
     

  15. wannabeboater
    Joined: Oct 2008
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    wannabeboater Junior Member

    Wow, alot of information, i could care less about the gunboat for that price, but are there any designs with the galley, looks, safety similar to it? or are there designers willing to design a boat like that, but instead of carbon fibre? i love the layout, looks, and strength, thank you for the other designs but im in love with that design lol
     
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