BboySlug

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About BboySlug

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  • Location
    Auckland, NZ via Austin, TX, USA
  • Interests
    trapezing, sailing while trapezing, catching up to the fleet while trapezing, passing the fleet while trapezing, sheeting the spinnaker while trapezing, steering while trapezing, dodging other boats while trapezing, rounding the mark while trapezing, catching beer cans which were thrown at me from other boats while trapezing, showing off to the ladies while trapezing, running aground while trapezing, pitch poling while trapezing, teaching others how to trapeze...you guessed it... while trapezing.

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  1. BboySlug

    dorking out super hard

    I know exactly what's happened here. StraightLeech, you're on the right track, so congrats! Short version: The opposing current surpassed the wave train's group velocity, and thus the wind generated waves cannot travel faster than the current pushing them back, so they poop out and disappear. Long version: Thanks for posting this OP, I love Patrick's videos. I think he may have forgotten his college lecture about a wave's group velocity versus the phase velocity. Or, he may have forgotten his college lab experiments with wave flumes. Technical explanation: You may recall a few things: 1) Deep vs. intermediate vs. shallow water wave condition: For deep, h/L>1/2, for shallow h/L<1/20, intermediate is between these limits. h being the water depth, L being the wavelength. 2) The wave's group and phase velocities (aka Celerity) are different. For deep water: Cp=L/T0, Cg=L0/(2T0), intermediate has longer equations which I don't want to type out, and shallow water is Cg=Cp=sqrt(g*h). Where Cg is the group velocity, Cp is the phase velocity, L is the wavelength, T is the wave period, g is the gravitational constant, and h is the water depth. The subscript 0 is that respective variable for deep water, as these values can change depending on your water condition. As one can see, the wave's group velocity is half of the wave's phase velocity in the deep water condition. For intermediate water, the phase velocity is still faster than the group velocity. So, these waves are travelling in either deep or intermediate water depth, and can only travel as fast as the group velocity. Eventually, the opposing current got so fast that it was faster than the group velocity, and the waves disappeared. Everyday man's/real life explanation: In university we had a wave flume, but for my readers, let's imagine a swimming pool. If you have your kid cannon ball into the pool's deep end (or, start generating waves with the wave maker in the wave flume), watch the first waves as they travel away from their source. The leading wave crest/trough will disappear, and the second one (if the depth stays the same) will follow suit shortly after. This is because the wave train all together can only travel as fast as the wave group. So, the first wave crest/trough will peter out to zero as they overtakes the group velocity. Then, the second wave crest/trough will also do so after it passes. This, however, is not true for shallow water wave condition, where the group velocity is equal to the phase velocity. Now, with the wave disappearing concept in our minds, lets go back to the video. Given the general topography, and the not fully developed sea state, these waves (especially in the middle of the channel) are likely to be propagating in deep water. Therefore their group velocity (wave train velocity) is higher than their phase velocity. Without the current, if able to propagate infinitely the leading wave phase will disappear as it overtakes the group velocity. With the opposing current, it eventually got so fast, that it surpassed the wave train's group velocity. So, in the video with the waves propagating from left to right, the wave phases disappear from right to left with the current as the current is so fast it prevents them from continuing to make "forward" progress. So, they wave group poops out, and gets erased from right to left. I understand my "everyday man's" explanation was still pretty technical, but I hope you get my gist. PM me if you would like to ask a question. Source: My university studies in Ocean Engineering, as well as growing up doing every water sport I can think of minus synchronized swimming and underwater basket weaving/hockey. Do I qualify as a mega nerd yet?
  2. BboySlug

    Shipping beach cat NZ --> Aussie

    Thanks for the tips on the trailer. I've called the QLD dept of transport and main roads and had a few chats. I'm currently liaisoning with a trailer guy in Brisbane about getting it modified to fit QLD standards before I ship it over to Brisbane. That way, I can take it directly to the dept of transport and main roads office to get it registered after I arrive.
  3. BboySlug

    Auckland multihulls

    Cathedral Cove Raid on my Hobie! New Superman Graphics to go with it!
  4. BboySlug

    Shipping beach cat NZ --> Aussie

    I've PM'd WetnWild, thanks Update: As for the mast, I've got a guy who keeps his H16 at RQYS. He said I can keep my mast with his boat for a couple months. As RQYS is the ultimate destination of my boat, I see this as quite convenient. I'm trying to coordinate someone to take my H16 mast from the Hervey Bay worlds to RQYS in Brisbane after the regatta. As for the trailer, I'll have to get it modified as it doesn't seem to meet some of the Australian lighting standards. I'm talking with the trailer manufacturer here in NZ now.
  5. BboySlug

    Shipping beach cat NZ --> Aussie

    Just talked with my contact in the A-class fleet, looks like I can throw my mast in with their shipment as many of them are shipping their boats over to Hervey Bay for their upcoming worlds. I'll then just consult with a moving company to do the rest of the boat. I'll find someone in the A-class or Hobie 16 Brisbane Fleets to just take my mast and store it for a couple months while I transition.
  6. BboySlug

    Shipping beach cat NZ --> Aussie

    When are the JJ's? That's an excellent idea.
  7. BboySlug

    Shipping beach cat NZ --> Aussie

    It's glued. I've already quoted with the dealer for leaving the mast behind and buying a new one there. It's AU$2555 for a new mast. As my current boat only shipping quote is NZ$4500, I don't see it as cost effective to buy a new mast. I'll be leaving the car behind and buying a new one in Aussie. That's at least easy to sell.
  8. Hi all, Trying to sell a beach cat to Kiwis has proven really difficult (without taking a loss less than shipping the boat itself)... looks like I'm just going to have to foot the shipping costs to Oz when I move soon... so I was wondering: Does anybody have any contacts who might be able to help me ship my Hobie 16 (and about a 1bedroom's worth of household belongings) to Brisbane from Auckland at a good price? Is anybody going from NZ to Aussie, and can just take my mast with them? If I can get someone to take my mast, then I can fit the boat on trailer in a 20' instead of a 40' container. Would help me immensely with the price. Cheers.
  9. If anybody is looking for multihull crew for the coastal classic please PM me. Looking to hop on a trimaran or catamaran. I own and race a Hobie 16, but also race F18s etc. Have crewed once on an 8.5m cat (didn't flip though), and I was consistent crew for a Corsair trimaran in the US before moving to NZ. Posting here to see if any multihull is looking for crew. If not, I'll head to crew.org.nz and extend my search to monohulls in a couple weeks. If push comes to shove I can just trailer my H16 up there and do the H16 BOI regatta.... but I've done this before so I'm looking for a change. Cheers
  10. I've never pondered soloing an F18, but I'm sure local clubs could dig up a really enthusiastic consistent crew. Not sure on price for an F18 as I had an H16 back in TX. I will advise that most of the F18s in TX who were consistently competing were 2012 model year or newer, and that was back in 2016. Not sure who has updated their boats. In purchasing an F18, I've heard lots of people talk poorly about the Hobie brand ones (Tiger and updated Wildcat). They're not bad designs, but the skill level needed to place at the top of F18 fleets is higher on a Hobie F18 than the competing models. So people find them frustrating. A Capricorn is the old generation of the C2. I'm unsure of the differences between the generations, but would assume the C2 is very much enhanced. Not sure on your budget, but your sailing experience sounds like after you find consistent crew, you'll outgrow the 2007 Capricorn within a year or two on the circuit, and need to sell it to find a more competitive boat. Make sure you have one of the local F18 fleet guys help you in checking the boat's condition. They're a wealth of knowledge. A Nacra F18 infusion and the C2 are the most common F18s you'll find on the Texas circuit, with a random Hobie brand here or there. I don't think the guys in TX experiment as much with their F18s as the Australian fleets do, so Windrush like F18s are less popular.
  11. I moved away from Austin, Texas about a year ago. I'm originally from Houston. I raced on the Cat circuit there. The F18 class is the most active travel one design fleet in Texas. There are a few A-cats (non foiling), however the Texas F18 numbers more than double the A-cats. Hobie 16 is not a bad choice either, but you'll travel farther distances to get good competition. You'll end up traveling to Dallas once a year for the Mid Americas (Corinthian Yacht Club?), and there's a big regatta over in MS/AL. Most of the H16 sailing seems to happen out of Florida, and Florida has a great F18 scene as well. If you choose an H16, local one design racing (except the Dallas H16 Mid Americas) is really hard to find in Texas. At the regular Texas catamaran circuit monthly regattas you'll only have 1-2 other H16s show up. Nacras also join the circuit, but there's so many different types that it's all on handicap racing. PM me if you like, I can get you in touch with some of the guys in Austin I know, and they can get you in touch with someone in Houston. F18/F16 cats are the way to go in Texas.
  12. BboySlug

    Revitalising the East Coast Australian Tornado Fleet

    Assuming you don't have to dick around with cars/trailers, yes, it'll be fine I think.
  13. BboySlug

    Revitalising the East Coast Australian Tornado Fleet

    Good luck at Takapuna, I'm just warning, it was one of the most stressful regattas I'd ever had due to the format of the venue. Takapuna sailing club staff are great and very accomodating, but the facility accessibility is horrendous.
  14. BboySlug

    Revitalising the East Coast Australian Tornado Fleet

    Takapuna will have a lot of nice looking babes around, and the bars are just up the hill. However, accessibility wise it's terrible due to several reasons: 1) Very difficult access for cars with trailers. Only one access point if they remove the chain between the bollards, even then, you have to go, turn around, and jump through hoops and ladders to do the maneuvers to get through it in a car with a trailer. This is only possible in the early morning before the rest of the city wakes up and starts parking their cars right outside the access point, or just driving their cars past it. The access point is barely wide enough to get your catamaran trailer through without hitting the bollards on either side. 2) The sailing club doesn't own much land outside of it's extent, rather it's council park land. Someone will quickly ask you to move your car and boat back onto the roadway after you access the club grounds via the access point. 3) Once you're past the access point and on the parklands/sailing club side, if it's wet in any way, shape, or form (dew, rain, etc.), it is difficult to get your car back up the steep hill to the access point and back onto the road. 4) Getting through the access point onto the road is a pain in the ass, as there are heaps of people everywhere, and other drivers just trying to get places who don't expect a boat (AND TRAILER!) to come flying out of the park since you needed momentum to get up the damn hill without going backwards. 5) The hill continues down to the boat ramp and beach. If you manage to rig your boat on the parklands, when you try to beach trolley the boat down the ramp, it's very steep and it's very difficult to prevent the boat from rolling uncontrollably down the ramp towards the beach. 6) At the bottom of the boat ramp, where it connects to the beach, the interface level is off. The sand is about 50cm below the end of the ramp's stone, and this big bump causes the hard stone to hit the bottom of your boat after the beach wheels go over it. 7) You have to deal with problems 5 and 6 in reverse when you come back after the races. This time, it's an uphill battle. 8) The beach is not wide at high tide. If you go out or come back at high tide, then you have no beach to land on. Instead, you've got a rock seawall. 9) THERE'S PEOPLE EVERYWHERE! And we all know people are stupid. When you come back from racing, they have no clue your boat is about to run them (or their kids) over while they are enjoying a leisurely swim. 10) There's no car+trailer parking, without walking 1km away, and that car+trailer parking is not affiliated with the sailing club, so it's quite possible it gets filled up with day-to-day recreational traffic. Wow, I didn't expect my list to reach 10 reasons. Despite being a terrible venue, I will have to give credit to the Takapuna sailing club's staff. They understood this and did everything they could to make it easier for us, even providing a tractor to help tow our boats/trailers up the hill after the races. They're very nice and helpful people. Please, do NOT host your worlds at Takapuna beach, it's a huge mistake. Stanmore bay and Manly Sailing club (just down the road from Stanmore bay) are far superior venues accessibility wise. Only downside is the girls aren't as plentiful, and the bars/restaurants are a little farther away. If you want the bars/restaurants, Orewa beach is pretty nice and you can sail there if you like from Stanmore. It's just a skip and a hop away. Otherwise, driving to places is good too.
  15. BboySlug

    Revitalising the East Coast Australian Tornado Fleet

    Also, Tornado_Alive, I wish you nothing but the best of luck with revitalizing the fleet. It's an amazing mission which you're undertaking and I'm happy to see others out there. Our local Hobie 16 fleet in NZ is trying to band together with the Wetas, A-class, and Tornados to have joint events to collectively increase all of our numbers long term. It's going to take a long time to get it off the ground though.