Showing posts sorted by relevance for query electronic antifouling. Sort by date Show all posts
Showing posts sorted by relevance for query electronic antifouling. Sort by date Show all posts

Monday, November 30, 2009

A great idea... Ultrasonic Antifouling

Back when we built Loose Moose 2, our yearly expedition to the London Boat Show turned into some kind of mega shop. Let me tell you it is a very dangerous thing to go to a boat show while you are building a boat! So many neat things, so many good ideas, and so many scam artists selling things of dubious value that seem like a good idea at the time! A nautical carny if you will...


I was reminded of this when I saw today's post from Casco Bay boaters (a website I am simply in awe of) about the electronic antifouling from Ultrasonic Antifouling as way back then when fitting out Loose Moose 2 at the London Boat Show in a fit of gear-buying frenzy, we bought electronic antifouling for LM2!

Now let me tell you about some of the other things we bought at the show... A hydraulic windvane self-steering gear that was more vaporware than product with a heavy dose of scam involved... But boy, could that salesman SELL! What can I say... I was younger and dumber back then!

We also bought a couple of cat life jackets for way too much money that made the cats fall over on their sides, which I suppose is "sort" of a safety feature as if they can't walk they certainly are not going to be bounding around the deck getting washed overboard!

Which, I guess, brings us around to the Electronic Antifouling... By the time we had returned to France, the niggling idea that I'd been had, or even worse simply done a very stupid thing as the Electronic Antifouling just seemed too good to be true, and if it made so much sense, why was no one actually using it and so on... Deep doubt took hold and by the time I was ready to install it on Loose Moose 2 I decided simply not to bother and resigned the EAF to be flea market fodder at some future date (if, that is, I could bring myself up for public ridicule of being dumb enough to have actually thought it was a good idea at anytime).

Fast forward a couple of years later and we were down near Sete where they farm mussels and all of a sudden the bottom of Loose Moose 2 was a veritable mussel farm and the task at hand was to scrape and otherwise do mayhem on my back underwater... Yuck to the Nth degree!

Lo and behold, though when searching for a really big scraper to do said scrape job on the bottom, what did I come across but the box of electronic antifouling stuck away (shamefully hidden actually) and, when uncovered, the idea of "well I could always install this as a way of avoiding the job at hand" came to mind (I'm really pretty good at AVOIDANCE). So a day doing a clean electronic installation VS shrimp & critters in the beard was honestly no contest.

So a couple of days later, the install was done and the boat now made little drumming finger noises which, of course, did not fill me with a warm fuzzy feeling.  Later that day with snorkel gear and scraper in hand, I go below and find that 90% of the mussels had vanished! What was left was an interesting grid pattern of where frames and structure inside the boat obviously made the vibrations of the hull not reach but the rest of the hull was, as they say, "Clean as a whistle". What fouling that was left was easily handled in a half hour...

So the electronic antifouling worked! That said, it did have some odd side effects as the rhythm of the transducers had a strange effect when playing music, as no matter what you played, the inbuilt metronome effect of the transducers meant whatever you played adapted to the antifouling... weird but we soon learned that when the guitars came out, you simply had to turn off the EAF. Not so bad really.

The EAF continued to work for several years until one day (we were now in the Caribbean) one of the ex-British Telecom surplus transducers quit working and then another and, as soon as we lost the full compliment of transducers, the fouling ceased to be held at bay. By this time the company in the UK was long out of business and sadly we returned to the haul-out-and-paint brigade.


Which brings us back to the Innovative Ultrasonic Antifouling... Does it work? Frankly I don't know. But, having had a system before that did, I am not going to discount it out of hand. Most certainly, I am going to delve much deeper into this system. If it works it is a no-brainer. The cost of antifouling "So It Goes" comes to just around $1000 or more every year and a half  (paint/haulout) and that is yours truly doing the labor (and it is not a fun job). Add in the fact that antifouling paint is poison pure and simple so it is not good for me or sea life... An electronic option that works would both be better for the environment AND my pocket book (can you spell SLAM DUNK?)

Saturday, February 05, 2011

Progress or lack of same... Electronic antifouling comes to mind

Over at the Cruisers Forum there is a renewed interest in the Electronic antifouling thread, but sadly it is just the same old same all over again...

Folks on boats simply do not appear to be able to deal with anything new in a positive or open-minded way, much to our detriment.

Don't believe it?

Within my lifetime, just about every major advance in boat tech or design has been greeted with disdain and derision...

Sails used to be cotton and when nylons came on the scene they were not exactly met with open arms... Well, until they started winning races.

When fiberglass was first introduced was it welcomed? Nope, not considered a proper material for building "yachts". It took years to gain a real acceptance.

Catamarans were considered death traps as well as meeting with the "not-a-proper-yacht"  bigotry where they languished in their own little multihull ghetto until the French broke out through racing and charter companies realized that there was serious money to be made.

Even VHF radio was at one time considered a "cheat" or "crutch" that no self-respecting yachtsman should have anything to do with, and, as for Loran, Sat Nav and GPS you might enjoy the editorials cautioning sailors to avoid such electronic marvels and stick with the tried and true sextant and reduction tables as the only proper way to go...

Yep, we folks on boats are certainly an open-minded and free-thinking group of gypsies!

As I have mentioned before, electronic anti-fouling can work as we used it successfully on Loose Moose 2 for a number of years (in the Med, Africa and the Caribbean). Whether the currently available systems work is a conjecture on my part as I have not had up-close-and-personal experience with them, but since I know that such a system can work, I certainly think they are worth looking into and I am keeping an open mind...

... And folks, an open mind is the key to progress.


Wednesday, July 18, 2012

The spiral continues...

Some needful history, the drought takes its toll, and Sail Magazine talks electronic antifouling (Speaking of electronic antifouling, if there are any readers of Boat Bits in OZ who'd be interested in helping me out with an errand, please drop us a line)...

The other day I mentioned the USVI has proposed a big hike in fees for local and visiting boats, so color me not too surprised when I heard from Stephen J. Pavlidis that the Turks and Caicos Islands were raising their fees...

Customs fees in the Turks and Caicos Islands for those wishing to stay less than 7 days have risen from US$15 to US$100, even if you are only stopping for fuel. The Duty officer can still show discretion for vessels delayed in leaving within the week for weather window or repair problems. Vessels staying over 7 days will need a 90 day cruising permit (US$300).
Hardly surprising but depressing none the less.

Listening to Doug and the Slugs

So it goes...



Tuesday, February 21, 2012

Make that cunning cheap bastard...

Big fish little board, about those Checkered Whiptail lizards, and what passes for success in law enforcement these days in drugs and terror...

Just to beat some folks to the punch who will say "Yeah, but Bob at Boat Bits is just a cheap bastard, so of course he'd come up with a cunning plan to avoid haulout charges"...

Guilty as charged and proud of it!

So, we were talking about ways to cut down on those boatyard blues, and yes indeed you might say I have a plan. In point of fact, some might, dare I say it, call it cunning!

The great designer of motion picture cameras Andre Coutant once said that to design a silent motion picture camera it was best to start with a camera that was quiet. This, of course, seems rather obvious but at the time it was something of an earth shattering observation...

So, in light of the thought process of Mr Coutant and in honor of the Eclair NPR camera, we actually have the kernel of the plan...

Make the boat less prone to need haulouts. See, simple!

Which means we need a better paint or means of keeping the critters off. As 95% of the reason anyone actually hauls out is because of the need to replace expensive bottom paints. With this in mind, I've decided a belts and braces strategy is the way to go...

The belt, if you will, is a copper/epoxy bottom of the DIY variety. There are, of course, several commercial options for this but they are all rather expensive for something that is really just copper flake/powder (41 microns) mixed into a low viscosity epoxy (System3/West/Raka) with a thixotropic agent (colloidal silica) and, being something of a cheap bastard, what do you think I'm going to do?

The cost of the resulting epoxy/copper mix comes to less than any of the usual suspects that most of us currently use for antifouling paint and as the projected lifespan of a copper/epoxy system is around ten years... Well, my basic math skills tell me this equates to about 20% of what paint costs. Factor in the not having to haul every two years for painting the bottom and the savings just became seriously huge!

That said, there are some issues with copper/epoxy bottoms and they need to be buffed up with a green dish scrubber to expose a bit of copper from time to time but I've noticed most folks with antifouling paint need to do the same, so no real change there.

The folks building the Bob Oram (a longtime user of copper/epoxy antifouling) cat "Scrumble" have a post about doing one of their hulls...

As for the braces... Hard core Luddite's might want to skip this paragraph. I still think that electronic antifouling systems make a lot of sense and given some development are our best option, so we plan to install along with our copper/epoxy bottom job a couple of transducers to make the bottom just that little more of an unfavorable place for critters to hang out.

Now that we have less need to haul out on a regular basis, we need to address the need to come out of the water on an irregular basis. For that, we need to add some legs to the mix. Peter, over at Mostly About Boats, made some excellent legs of the semi-traditional sort for his Albin and over at Atom Voyages there is a less traditional but more stowable version that makes all kinds of sense.

Now with legs I won't have to be at the mercy of some silly priced yard if I need to service something below the waterline or other needful drying out maneuvers...

These projects along with the fact that we converted our mast to a deck-stepped tabernacle system means that 90% of normal haulouts are no longer needful for at least 8-10 years, which pretty much works for me.

Listening to Dr John and music from the first season of Treme (it is after all Fat Tuesday!)

So it goes...



Tuesday, July 12, 2011

rant warning...

Over at Dispatches from the Middle River, they point out it's about time to light the torches, I don't know about you but if I were in the vicinity of San Diego I'd make a point of going here, and fat just got fatter...

Now, if you will excuse me, I feel a rant coming on...

I noticed a thread on a forum I look at from time to time and someone asked about electric propulsion. The question was simply wondering who else was doing the electric propulsion thing to compare notes, but it is more than likely it will devolve into an ongoing discussion by folk with no actual experience with electric propulsion both pro and con but lots and lots of opinions.

This whole sailing gig is hard enough for a lot of people just getting into it without having to add a lot of baseless conjecture, opinions without any real world experience to back them up, or tales from a guy who heard it from a another guy who heard from a dude who might have actually seen an electric drive muddying the water...

Ya think?

So if you don't actually have experience with something like electric propulsion, electronic antifouling, or whatever, don't give advice and leave your snarky comments at the door... STFU is not a bad mantra and you'll find that folks will often equate the process with wisdom.

Listening to Joe Walsh

So it goes...



Monday, January 07, 2013

Must get to doing...

Some military madness, a tidbit from the "we're really screwed" department, and this, because it would make a lot of sense as well as make several regular readers of Boat Bits heads explode...

So, what's on the project list this month?

Well, for a start I have to paint the deck and, as I need to remove/re-bed some deck hardware anyway, it makes some sense.

It's way past time to replace the portlights on the coach roof as the perspex is WAY past it's sell by date. Not a horrible project except the super large sizing of said windows makes for a lot more waste which is anathema to my frugal nature... So much so, that I am seriously considering just filling in the overlarge spaces and redesigning the portlights to be a bit smaller.

The ongoing/endless redesign and rebuild of the galley/salon, of course (Lord, will this job ever end?).

Did someone say radar arch?

Not to mention that we just heard that our new electronic antifouling kit from Australia (which has been unavailable and we have been waiting for over a year on) is waiting for us at our mail drop in St Thomas...

Listening to Neil Innes

So it goes...