Interesting things seen in a boatyard

Discussion in 'Boatbuilding' started by DogCavalry, Jun 6, 2021.

  1. Ad Hoc
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    Ad Hoc Naval Architect

    Indeed!! :(:(:(
     
  2. DogCavalry
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    DogCavalry Soy Soylent Green: I can't believe it's not people

    Even fisherman A isn't getting anything for his money. Outside of the speed and load state a bulb is designed for, it's just drag. And a fishing boat will never have A speed and load state. Unless it never works, and never carries fish.
     
  3. comfisherman
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    comfisherman Senior Member

    A few picked up some benefit. But they were length limited vessels and the entire bow was cut and a new molded bulb that was actually significant in a tonnage sense. Not sure if it helped the speed or ride beyond the addition of raw tonnage. But tonnage is tonnage.

    The under 58 cod and pollock boats run at very consistent speed and load, so some benefit may exist. Granted it's a very narrow application of the idea, and it may be an argument lost in the significant figures.


    I got sick of trying to explain that tiny glass bulbs on shallow glass boats did little good and could potentially cause drag. So made a mold and instead sold several, doing my best to make the "least worst" appendage. It's been weird to see various ideas be adopted with very little evidence.
     
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  4. DogCavalry
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    DogCavalry Soy Soylent Green: I can't believe it's not people

    Admirable. Save them from their own foolishness, and make a few dollars as a hands-on consultant.
     
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  5. DogCavalry
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    DogCavalry Soy Soylent Green: I can't believe it's not people

    20210714_213318.jpg 20210714_213254.jpg 20210714_192505.jpg An RCMP power cat. Power long since removed. And with that much beard, a long time neglected.
     
  6. BlueBell
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    BlueBell . . . . .

    I remember when these four cats were new!
    I had a tour of MV HIGGIT.
    They were conceived as mobile offices for the west coast.
     
  7. comfisherman
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    comfisherman Senior Member

    Those were some small diameter jets for what look like relatively heavy cats.
     
  8. DogCavalry
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    DogCavalry Soy Soylent Green: I can't believe it's not people

    Blocked off ports, I thought massive outdrives. You reckon jets?

    Oops. Thought about it. No jet intakes.

    Obviously these boats weren't practical.
     
  9. comfisherman
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    comfisherman Senior Member

    Probably surface drives if no ports. That Probably fits the timing of what was in vogue to spend tax payer money on about the time those were built.

    Our local trooper patrol boat was built with a very expensive transducer for what I assumed were vague search and rescue excuses. They located it below the installed pot launcher they used for enforcement. First pot cracked said Uber spendy transducer so badly it was immediately dead. It was powered with 7 liter mains (private sector sister ships have 18 liter mains) to maintain operational speed they have to run them hard.... and those engines are not long for this world.

    Poorly designed public vessels.... we all have them and feel your pain...
     
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  10. DogCavalry
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    DogCavalry Soy Soylent Green: I can't believe it's not people

    20210715_202003.jpg

    Yes, this is a lot of boat for little boat.
     
  11. BlueBell
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    BlueBell . . . . .

  12. DogCavalry
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    DogCavalry Soy Soylent Green: I can't believe it's not people

    20211002_173852.jpg
    Now this little guy is a heck of a tool. That's the smallest steering kort nozzle I've seen.
     
  13. comfisherman
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    comfisherman Senior Member

    In 2012 or maybe 2013 ballard brass and propeller had a line of steerable kort nozzles built for snow and co and mavrik marine. They did 30, 32, as well as 28. I've only seen one 28 supposedly there is a 24 that snow put on 2x john deere powered seine skiffs, But i've only seen them in the water. Sadly have not seen them out. They are cast aluminum with a stainless ring machined and pressed in. Would think that it would cause all kinds of galvanic issues but the must have got it figured as the oldest ones are still in service and near 10 years old. Them things can pull....
     
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  14. DogCavalry
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    DogCavalry Soy Soylent Green: I can't believe it's not people

    I'm going to take more pictures of 542. Form follows function. No concessions for beauty here. But a mini beast.
     

  15. comfisherman
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    comfisherman Senior Member

    Here's a double rudder on a bc built multi use fishing boat. Don't see much of this on open wheels.
     

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