Dave
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Posts posted by Dave
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3 hours ago, AlastairW said:
Antifoul has nasties in it that deters or kills the offending biology, silicone foul release doesn't. It operates like a non-stick frying pan, so the greeblies are washed off by the motion of the boat through the water.
Does it actually self clean? I've got MacGlide on my boat which is supposed to self clean, but it builds up a layer of slime which doesn't come off, even with a decent amount of speed. I also find that the slime dries at the waterline which allows barnacles and such to get a foothold, it is very easy to clean though.
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4 hours ago, aardvarkash10 said:
We have two on board, looking to add another pair.
They seem to range widely in price - from this sort of thing to this sort of thing.
What are the real world differences?
Hi Ash,
In my opinion it depends on your criteria, as an indication mine are in red (and for context I have a 30ft trimaran with no lifelines):
- intended usage worn 100% of the time on deck, so must be comfortable.
- area of use coastal - offshore PFDs are spendy, like your second example (tasty though).
- integrated harness I intend to short hand and solo occasionally so the ability to tether is essential.
- adult vs child adult - life jackets for children are a whole other issue.
- inflatable vs 'solid' I prefer inflatable due to comfort of wear, 'solid' PFDs need to be really well fitting.
- manual vs auto for me manual inflation, as getting trapped by an auto inflating PFD under an upside down multi would make a bad day a whole lot worse.
- cost - purchase and through life (annual servicing for some PFD types) I have this one and it will need annual servicing due to racing requirements, note that you can also self service these jackets.
- maintenance overhead (cleaning, storage etc.) I like easy, so a PFD that can be given a quick spray in fresh water, hung up to dry and then stored is a bonus. Inflatables are great as they don't take up much space.
As Kevin mentioned above, if you do go with an inflatable option then a crotch strap is essential, and that in my opinion, is not negotiable.
Anyhoo, just my 2c worth. Off to get my popcorn...
Cheers
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1 hour ago, Black Panther said:
My list
Replace bow thruster switch
Buy some mainsail slides for spares
Replace main topping lift and reefing lines
Attempt to make my autopilot talk to a kindly donated gyro
Finish installing deckwash system
New cockpit cushions
New main cabin upholstery
Attack engine oil leaks (again)
Buy some oil
Touch up Grey paint at transom
No 11 which I finished this morning was adjust the pitch on the new kiwiprop. The job took less time than putting on the wetsuit. Impressed.
Slides or slugs BP? I've got these you're welcome to:
12mm diameter by roughly 70mm.
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Yeah sorry, that was firmly tongue in cheek. I'm actually freaked out by the relative angles of the two boats, mind blown...
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9 hours ago, Ed said:
TP52 Med Cup boats are nuts, TWS 14 knots, TWA of 36°-38°, Jib lead about 3.2° off centerline r. 9.1 knots boat speed
Also that jib likely costs more than my entire boat!
Yeah, but obviously lightly loaded, old mate is trimming it without mechanical advantage!
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I couldn't find an insurer in NZ willing to take the 'risk' for my trimaran and ended up with a crowd called Edward William Marine Insurance. They're based in Spain and the underwriters appear to be Costa Rican. I did do a bit of research on the company with mixed results, suffice to say I hope I never have to make a claim. The premiums seem reasonable though and there weren't too many hoops to jump through.
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Thanks BP and IT (and Fish for piquing my interest), much appreciated.
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10 hours ago, Fish said:
Has anyone ever heard of pilotage? You know, when you look out the window, look at the colour of the water, the depth, location of the land and understand your geographical position with it?
You don't need a chart for any of that. Not in an emergency.
Name a passage in the Huaraki Gulf or Norhtland Coast you couldn't complete without a chart? We don't have tidal rips, there are no currents setting east or west like the English Channel. We don't have tides like Brittany.
The one tidal gate in NZ is at D'Urville Island, long way from the Gulf.
Any passage the in the gulf can be completed with pilotage. i.e. look where you want to go, and go there. Getting to Barrier? you can see it the whole way. At best a compass course. Going to BoI? Keep the land on your left. Coming home from BoI? keep the land on your right...
All I use my chart plotter for is telling me how fast I'm going, and my time of arrival, mainly so I can plan when to have dinner, and keep the kids entertained with the 'are we there yet? questions.
I'm curious, is there a course available that teaches pilotage as you refer to it?
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+1 to that, had to do a bit of reconstructive surgery in order to fit the new one to my boat earlier this year. Royal embuggerance.
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Might work, I seem to recall that there's a top speed for the wrap above which it's not recommended, the guys at MPS will tell you I'm sure. I don't know what the relative 'boat speed' of a propshaft is at revs but I guess you could work it out algebraically. I hope it goes well for you.
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I tend to agree Tamure, I had hoped that it would have been a bit of a "silver bullet" in the war on fouling, but realise now that its probably not quite there for the majority of prospective users. By that I mean that to get the benefit out of the wrap I think you'll have to be pretty stringent on maintenance if you're not using the boat regularly. Leaving it as I did for so long was asking for trouble so have only myself to blame.
From a cost perspective the wrap was around $4.5k, as well as probably $2k for the hull prep and paint. The product is warrantied for 5 years so for me it will ideally cost $1300 per year over it's life, still dearer than hauling and antifouling but it 'should' be a bit less hassle, we'll see about that.
I reckon it will be a good solution for launches that are used reasonably regularly, with the added bonus of fuel savings for them due to the claimed drag reduction of the silicon. I'm interested in how your mate gets on, there's also a couple of power boats that have been done at Stillwater so when I run into them (not literally!) I'll see how they're getting on.
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Thanks for the reminder CD, I'd intended to post an update on the MacGlide post sailing and hopefully have some photos/video to share but I haven't actually managed to use the system as intended yet so was holding off until I had done so. In any case here's some impressions that I have so far.
The boat had a fairly thick layer of slime on it with some obvious small barnacle action and hard wormy type things on it after about 8 months up the river. On the initial sail I managed to get the speed up to 10kts for reasonable periods but there was no perceptible self cleaning evident after the sail. I subsequently dove on the boat and cleaned the hull; I used a really soft sponge and the majority of the fouling came off very easily, one gentle wipe was enough to get rid of it. However, there were patches of some sort of plaque-like growth, some quite large (dinner plate size) that required dislodging with my fingers. It did come off easily enough I suppose, although I was concerned that it might have damaged the film but I'm yet to confirm this. Overall really easy to clean.
The next sails were excellent, huge performance increase as you'd expect, and the hulls (trimaran) remained clean. As it was only a few days between outings though there wasn't time for the hulls to foul much. I haven't managed to get out to the boat for three weeks now so when I do I'm expecting to see a slimy bum without much crustacean growth...hopefully. I'll decide then whether to sail and see if it cleans, or clean it and go for a sail. The driver for that will be the amount of hard fouling I find.
Sorry this has been long winded, I mentioned at the start that I hadn't used the system as it was designed. I'm not disappointed at the amount of growth it had, nor it's persistence, as I admit I didn't give it a fair go. It appears likely that if sitting on a mooring without use it will need cleaning periodically (3-4 weeks?) but if the boat is used regularly it will do what it says on the tin.
One last comment - once the hard fouling (barnacles, worms etc.) had gained a foothold I noticed that fish were feeding off the hull. As a result there are areas around the waterline where the fish have nibbled the wrap and left a fingernail shaped and sized divot in the silicon.
More to come...
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That's grand thanks. It's definitely not NX2 so hopefully it should all work...
Cheers
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You Sir, are a legend. Thanks for that, my WSI box has been reprogrammed so I'll hook it all up and see what happens. Be nice to turn that ornament on the top of my mast into something a bit more useful.
Final old Nexus question: Is there any way to output the data to a laptop? I'd like to have a play with OpenCPN tactics and build some polars. The interwebs would suggest not...
Cheers and thanks again.
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Has anyone got experience with the NX starter system with the WSI box and no server? I've gone with a wired wind transducer but didn't get the brief on where to attach the cable. The WSI box is full so I'm assuming it goes directly to the back of the instrument itself, can anyone clarify please?
Thanks
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.... at high tide of course.
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What on God's green earth possessed you to posit this question?!
Has the Volvo clunk sent you round the bend?
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Yep it sure looks mint in your photos, well done on the clean up. The dust looked reminiscent of electrical bearing type stuff but you're far more technical than me! I've got a wee fella with a bucket of crap that visits all the nooks and crannies of my boat and sprays it liberally around, industrious soul is he...
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I meant to thank you for providing the manual above, so thanks!
I had a wireless NX2 system which I changed to wired earlier this year, haven't managed to hook it up yet to see if it works, and if the reprogramming of the server was successful. Hard to find support for this gear I found.
If you strike problems with your testing I've still got the old wireless head, welcome to it if it's of any use.
Cheers,
Dave
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So, I went with the MacGlide from MPS. I was keen to explore options other than conventional antifouling and following a bit of research I decided that I'd give this system a go. Due to a combination of factors the boat has been sitting on a mooring up the Weiti River for six months now and has got a fairly 'healthy' layer of slime on it. I have not dived on the boat for a couple of reasons: a) I'm a wuss, and b) I wanted to give the product a decent test of it's claimed performance as a self cleaning film. Fingers crossed I'll be sailing the boat in two to three weeks time, at which point I'm hoping the investment I've made will see me return to the mooring with a squeaky clean bum.
I'll let you all know how it goes.
Dave
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I'm not sure it's a good recommendation but I have used Gulf Harbour Marina for my 7.8m wide tri. Bit pricey I believe and hardstanding fees are factored at 1.5x for multihulls. On the plus side there's plenty of services available and the folk there were really pleasant to deal with.
I have also used Fusion Marine out the back of Silverdale, they're good guys and were pretty reasonable (also 1.5x for cats) and should be able to haul your boat, there was a big cat on the hard whilst I was there. It's just a hardstand attached to a boat builders yard though if you're looking for some work to be done. Does have power, water and a bathroom!
The Harbour Classic - 1st April
in RaceTalk
Posted
Had a real fun day out on the water for the race, apart from shredding our kite somewhere off Long Bay. Did lots of transom watching as the proper racers showed us how it's done. Really appreciated the generous start line, even though we were a smidge late the amount of room made for a stress free experience. Be back next year.