Chris 249 forum posts in last 60 days

Reply in Topic: Bommies
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
14 Oct 2026 9:39am
julesmoto said..

PacificStar said..
in the pacific we floated our anchor chain .

our friends irelene & brown on "Blown Away" explain how it's done here


this minimises damage to the coral and the chance to foul a bombie, but nothing can eliminate completely

cheers,




Unfortunately this looks like a recipe for getting somebody else's keel, rudder or prop tangled in your chain


Plenty of experienced cruisers do it, so it seems to work.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
13 Oct 2026 10:34am
Kryspen said..

Chris 249 said..


Quixotic said..



Kryspen said..
Previously i posted about advice on anchor chain replacement - 8mm.
<snip>
Talking to Muir about the chain i even got decent quote. But i also started looking about anchor chains on the net.
What I found ( just as well ) is that proper anchor chain, like grade L should be galvanized to Australian standards with Zink thickness at least of 75 - 89 microns minimum if anyone is using occasionally . But if someone like myself sitting on anchor 24/7 , the Zink thickness should be basically 100 microns.
I also found that chain supplier should provide manufactures certificate of the chain. The 100 microns Zink galvanized should last at least 3 years when constantly submerged in salt water .
<snip>
Well, the search is on.







Hi
I've seen a table that suggests Muir 8mm anchor chain has zinc thickness of 72 micron (see below from marineinnovations.com.au/product/australian-short-link-grade-50-chain-8mm/ )


As I understand it, that's consistent with HDG600 which is based on grams of zinc per square metre (ie 600 per sq m) which is meant to yield a minimum local thickness of 70 microns, and an average of 85 microns.

I've heard of HDG900 which takes you to an average of 125 microns thickness.

If you want 100 microns average, then you'd need 720 g/sqm

I've not come across anchor chain that had that thickness of zinc. But then I haven't really gone looking.

There are outfits that specialise in galvanising steel as a business. They may be open to galvanising a length of G50 8mm steel chain. And they may be able to do it to 100 micron thickness.

Not sure what it would cost you.








As someone who seems to be across this, what thickness do you recommend?

Our chain is ageing and I’m looking to get a full Muir setup with an anchor winch and two rodes. I haven’t checked chain size yet for our 5000kg 36 footer but I think it will be 8mm so 72 micron gal if we use Muirs.



My research on this - normal mooring for 8mm, galvanised thickness should be 75 to 80 microns, but looks like is not easy to find any suppliers providing certificate stating zink thickness. Stick to Muir winch, parts available if you need. Lewmar is not so easy on parts and very expensive.


Thanks for that, cheers. Given the issues you describe with finding info on gal. thickness I’ll just go with the Muir chain as well.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
13 Oct 2026 10:31am
Quixotic said..
I’m sure I don’t know enough to advise others what to do. Happy to relay info that’s factual, where I have it to hand, but don’t want to step over the line to making recommendations.

Ground tackle varies according to where you want to use it and what margin you want to have amongst other things. If I recall correctly ramona thinks I’m over anchored with my 22kg Sarca Excel and 10mm all chain (galvanised) rode on a 8 tonne 40 footer. But I’m happy with what I’ve got..


Sorry, I was only asking about galvanising thickness since you seemed to be on top of that.


Incidentally we have a 16kg Excel on a 5 tonne 36 footer and love it.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
9 Oct 2026 8:56pm
$10 to $15k for a tiller? How does it cost that much outside of YT land?

The main thing for me is that they are making a deal out of something they still haven’t tried. We know that in carbon windsurfer masts, for example, there is a lot of jamming that occurs between sections, so how do they know that this will work? If you don’t know it will work then why parade it around?

Yeah, yeah, it’s YT rubbish. But one cal still say it looks like overhyped and under-done.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
8 Oct 2026 8:02pm
Quixotic said..

Kryspen said..
Previously i posted about advice on anchor chain replacement - 8mm.
<snip>
Talking to Muir about the chain i even got decent quote. But i also started looking about anchor chains on the net.
What I found ( just as well ) is that proper anchor chain, like grade L should be galvanized to Australian standards with Zink thickness at least of 75 - 89 microns minimum if anyone is using occasionally . But if someone like myself sitting on anchor 24/7 , the Zink thickness should be basically 100 microns.
I also found that chain supplier should provide manufactures certificate of the chain. The 100 microns Zink galvanized should last at least 3 years when constantly submerged in salt water .
<snip>
Well, the search is on.





Hi
I've seen a table that suggests Muir 8mm anchor chain has zinc thickness of 72 micron (see below from marineinnovations.com.au/product/australian-short-link-grade-50-chain-8mm/ )


As I understand it, that's consistent with HDG600 which is based on grams of zinc per square metre (ie 600 per sq m) which is meant to yield a minimum local thickness of 70 microns, and an average of 85 microns.

I've heard of HDG900 which takes you to an average of 125 microns thickness.

If you want 100 microns average, then you'd need 720 g/sqm

I've not come across anchor chain that had that thickness of zinc. But then I haven't really gone looking.

There are outfits that specialise in galvanising steel as a business. They may be open to galvanising a length of G50 8mm steel chain. And they may be able to do it to 100 micron thickness.

Not sure what it would cost you.






As someone who seems to be across this, what thickness do you recommend?

Our chain is ageing and I’m looking to get a full Muir setup with an anchor winch and two rodes. I haven’t checked chain size yet for our 5000kg 36 footer but I think it will be 8mm so 72 micron gal if we use Muirs.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
6 Oct 2026 9:27pm
JonE said..
"One of her students once did a study and pulled in her mother's friends from her yoga class, who basically blew up the age/balance correlation because their balance was excellent despite their age"

Sorry but thats such a crap assertion.

It's like saying "we did a study on how good people were at ball sports by age group and we selected some unco teenagers and a masters footy team and found that older people were better".

I know you're triggered by lifejackets but saying that
Besides, I've been to a few yoga classes and some of the older (usually female) participants have incredible balance - no doubt, but any of them that are any good have been doing it for years.










I never said anything like "going to yoga is more likely to prevent you drowning than taking reasonable safety precautions” and is completely wrong to pretend I did.

I did NOT say that the yoga students blew up the entire theory (or fact) of balance deteriorating with age. They blew up the correlation in that ONE study I was referring to. You actually proved the point I was making when you said some of the older participants at your yoga class had incredible balance. That shows that older people can have outstanding balance if they work at it, which was the whole point!

We don’t have to just accept having poor balance as we age, if we work at it. We don’t have to accept growing very weak with age, just as the cyclist examples prove. An older person who trains hard can maintain their physical condition so well that they are actually better in some ways than a typical untrained younger person. That is very relevant when it comes to things like falling off boats and dealing with the aftermath.

Stories based on truth often work better in discussions than throwing stats around, which is why I used them. If you want numbers then there is example is at sportcoaching.com.au where it’s noted that a typical competitive 65+ year old cyclist generates more FTP power than a typical 18-25 year old who does recreational cycling. Yes, the definitions can vary but when the discussion mentioned the effect of ageing, it is perfectly reasonable to point out that a 66 year old who has trained and practiced can be better at things - including such relevant and critical things as pulling themselves from the water onto a boat or swimming to shore - than they were when they were much younger.

The Chat GPT stuff shows the limitations of LLMs with silly statements like "exceptional athletes demonstrate what is possible, rather than what is typical or achievable for everyone.” No reasonable person would have thought that mentioning a world record holder was implying that their feats were typical or achievable for everyone, so to point that out is ridiculous.














Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
4 Oct 2026 7:30pm
Quixotic said..
For those not as young as they used to be in this thread... (from: vestibular.org/article/coping-support/living-with-a-vestibular-disorder/age-related-dizziness-and-imbalance/balance-aging/ )

"The inner ear is a complex structure of fluid filled tubes and chambers. Specialized nerve endings inside these structures sense the position and movement of the head and detect the direction of gravity. Signals sent from the nerves of the vestibular system are critically important to the brain’s ability to control balance in standing and walking. They also control movements of the eyes that make it possible to see clearly while moving.

"Anatomical studies have shown that the number of nerve cells in the vestibular system decreases after about age 55. Blood flow to the inner ear also decreases with age. When the vestibular system is damaged, an individual may experience dizziness and balance problems. However, the gradual loss of vestibular nerve endings with aging can result in balance problems without any associated dizziness. This type of slow loss of vestibular function may be first noticed as difficulty walking or standing, especially in the dark while on soft or uneven surfaces (such as thick carpet or a forest path).

"A decline in balance from inner ear function may be caused by a number of conditions including normal aging, benign paroxysmal positional vertigo (BPPV), infection, Meniere’s disease, or diminished blood flow to specialized nerve cells. Additionally, certain medications such as some antibiotics for severe infections and chemotherapy may damage the inner ear, resulting in temporary or permanent hearing loss, impaired balance, and trouble seeing clearly while in motion. Feelings of dizziness, vertigo, imbalance, and disequilibrium may indicate that the inner ear is not functioning correctly."

In my totally amateur (ie unqualified) opinion, this is also complicated by a marginal loss of both strength and reaction times that decrease agility in older age.

You can offset these up to a point by doing things that require balance and leg/core strength. In my completely unqualified opinion, that includes sailing, especially if it is done regularly in a decent swell.

So sufficient caution and practice getting dinghy to boat and getting on board, supplemented by plenty of offshore miles!

None of this constitutes advice which anyone else should follow. Make you own decisions and balance (sic) your own risks! 😀



Excellent post.

My wife is a neuroscientist who does a lot of work on balance, using forceplates and other tech. One of her students once did a study and pulled in her mother's friends from her yoga class, who basically blew up the age/balance correlation because their balance was excellent despite their age. So yes, balance, like strength, is very much something you can work on and improve even as you age.

It's interesting to look at masters sports records to see what happens when you age. In cycling, the world hour record for the over 90s is 60% of the speed of the open record held by a pro world champ. Sure, resistance increases by the square so going faster becomes hard, but the fact that someone in their 90s can hold 35 kmh for a full hour, with the drag of going around corners, shows what can happen if one works on one's fitness. Most 20 year olds would probably die doing that. A good 60+ racing cyclist will drop a 35 year old cafe racer with ease, let alone a normal person - and as for a 35 year old hanging onto some of the older and smaller women masters up a hill, forget it.

On top of that, working on your physical fitness has innumerable other advantages for health, whereas worrying about safety gear doesn't.



Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
2 Oct 2026 7:07pm
choco said..

Chris 249 said..
The shape of most boards changed dramatically with wide style boards, which use the simple physical fact that a short and wide planing surface is far more efficient at planing speed.

The idea that the gap between the two “planing” surfaces won’t get in contact with the water seems to be very dubious in any chop.

These boards goes away from that. The style, incidentally, was tried about 1981.



What were those boards built from back in 81?


Probably just polyester and foam.
Reply in Topic: Escape hatch???
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
30 Sep 2026 10:48pm
garymalmgren said..
As he shone his torch at the starboard hull, he was met with every sailor's worst fear.



He was met with every sailor’s worst fear - yes, lurking in the hull was a silly cliche that is complete bollocks. :-P

I never realised that every sailor was haunted by the fear of an escape hatch leak. Why are all sailors so worried about something almost none of them have? We need an enquiry and an investigation into this nameless terror that is terrorising our sport!
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
30 Sep 2026 9:45pm
Planter said..
Starting with the premise - ALWAYS WEAR A LIFEJACKET !!!

Small fibreglass dinghy is positively dangerous,and can tip/capsize in an instant. Are then awash,and difficult to bail out . But,light/easy to store !?

Had one,but quickly got a 10ft Tinny - awkward/heavier,but should not tip or sink,and can be bailed out. Also,can get back in over the stern if fit/light enough ?Rowable in as breeze,and will get there with 18lb mini watersnake el. outboard.

RIB ideal with a motor,but difficult to row + will blow away from you ! Not recommended to leave on the shore tied to a tree = temptation to puncture ? So have to dismantle,or tow home .











NO.

Why always wear a lifejacket? So you can’t swim as quickly? Because you want to make it harder to get onboard your own boat, or another boat in the mooring field? Because those of us who bodysurf in big waves for ages or spend 60 minutes diving to clean our hulls will suddenly forget how to swim if we get dunked, which is something we do regularly when sailing dinghies, cats or boards?

How often do you end up in the water? As someone who windsurfs and sails dinghies, I often end up clambering back on board and having a PFD can be a PITA. The buckles can catch, they can slow you down so you may not be able to catch a drifting boat, and since we can quite easily swim the distance from our boats to the shore and back again a bunch of times, the chance that drowning will suddenly become an issue is basically non-existent.

If small fibreglass dinghies are positively dangerous then how come some of us have owned them for years and not capsized or filled them? I live aboard for four years and for most of that time I had little fibreglass dinghies with no problems. And it’s easy to get aboard a 7ft or so ‘glass dinghy - some of us do so after swimming.

The big thing about much of this is that most people never get into a situation where they have to practice skills like getting back aboard their own boat (or a nearby boat), don’t work on their balance, and don’t work out how they can get their heavy clothes off if they are like the guy Pacific Star luckily saved, and can’t swim well like the guy I saved.

Yes, the chap who sadly died in Quakers Hat Bay was a surfer - but he also seems to have hit his head, and we don’t know if he was used to boats. If you are unconscious in a PFD you are basically dead anyway. Most PFDs won’t float your head properly, and even the ones that do don’t stop the normal tendency for an unconscious person to turn face to wind and drown from splash. If you want to prevent drowning after being knocked unconscious then wear a full-face helmet at all times, and wear a high-end PFD with the splashguard deployed.





Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
26 Sep 2026 12:25pm
Just as a thought, is part of the issue a fundamental difference in navigating a plane and navigating a boat? On a commercial aircraft, aren’t you normally flying so high that the underlying terrain is largely irrelevant for most of the flight? Couldn’t that lead a pilot to subconsciously pay less attention to the terrain underneath their boat??


Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
26 Sep 2026 12:16pm
Quixotic said..

Maybe I'm obsessive, but I route plan in advance and then study the chart closely along the whole of the planned route for any signs of objects before sticking to the planned route.




I think you can change “maybe I’m obsessive…..” to “I do the proper and seamanlike thing….”.

Personally I’m often happy to deviate further from the planned route than you may, but then again I’ve spent no real time in coral. But route planning as you do is a vital part of seamanship, and it seems that doing it on a paper chart is part of the proper preparation.

Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
26 Sep 2026 11:32am


sick_em_rex said..
Not sure how you can say that without ever trying them. Maybe do some research on the idea before you give out your opinuion. And why do you think it is not a modern board? They were made literally this year using advanced construction processes. It wasn't some old board/s pulled out of moth balls. Bruce designed one of the biggest selling Australia funboards of the 80's, that being the Bombora Capricorn.I think he knows what he is doing. I actually think you owe the guy an apology with your comment. If people didn't experiment with different designs then we would all still be riding Windsurfers.


If we do some research about the physics of planing hulls, then we see that they’ve been well and truly explained since before David Savitsky did his work. We then know that the physics of planing hulls show that a short, wide area of contact with the water is more efficient in terms of lift for drag, because drag drops by the square as width increases. We can see pretty easily that even if the board was only planing on the tiny patches at the back of each “sponson”, then in just about any chop the waves will be hitting the “tunnel” which will increase wetted surface friction.

If we do some research we also find out when guys like Jim Drake created the shift from skinny Capricorn-style narrow boards to the wide style boards that have dominated windsurfer design for the past few decades, it was because they had done the research and knew that for planing, a wide aspect ratio planing surface is generally far more efficient. So if we do our research on the idea, we can see very good reasons to say that it probably won’t work any better than when it was tried about 45 years ago,

Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
23 Sep 2026 7:41pm
Does anyone have a paper chart of the area?

Maybe I’m just an old fart, but there seem to be so many problems with electronic charts that using the paper chart as backup seems to be the only way to go.

Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
23 Sep 2026 7:29pm
The shape of most boards changed dramatically with wide style boards, which use the simple physical fact that a short and wide planing surface is far more efficient at planing speed.

The idea that the gap between the two “planing” surfaces won’t get in contact with the water seems to be very dubious in any chop.

These boards goes away from that. The style, incidentally, was tried about 1981.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
14 Sep 2026 8:04pm
There's a different Farr 65 around that's been modified from a beaten up race machine into a nice looking commercial adventure cruising boat. Googling Falken brings it up but I can't link here. A sister is taking paid crew around the world in the ARC. So some people are finding uses for Farr 65s.

I never sailed Brinders but she always looked like a really nice boat. I think of boats like her as "just a boat boats"; not something designed for a rating, not something designed as the fastest possible craft, not something designed as a slow cruiser or as a classic or whatever - just designed as a really nice boat to sail and to sleep on.





Chris 249
Chris 249
NSW
3616 posts
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13 Sep 2026 7:25am
I was going to say that it’s not so good that other innocent people with the same insurer will end up paying for it all. But then I saw that it was a big game fishing boat, which may mean that only people with big stinkboats that make vast waves that stuff everyone else up will pay. That changes everything. :-)

I sometimes wonder about gamefishers. They get very emotionally attached with a battle of brains, brawn and skill in which they need the assistance of several other people and a million bucks of boat, engine, and electronics to beat something with the brain of a chicken. It seems like going rabbit hunting using a tank.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
12 Sep 2026 11:08pm
KaneK said..

cammd said..
That's a sorry story for sure.

I would be putting a new anchor on the shopping list before replacing the sail.



If you don't know how to set an anchor , the quality of the anchor is irrelevant


A lot of the time yes, but as someone who has recently swapped all my anchors over to modern ones it seems that they will often hold even for people who don’t know how to set them.

Commiserations about the damage, I’ve seen a couple of delivery skippers who seemed quite low on sailing skills.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
12 Sep 2026 10:49pm
lydia said..

PacificStar said..
if you wanted to throw money at it, might be interesting what she would rate on IRC

get her for $40k...spend $150k on her...could be then worth - $100k ?

cheers,



$150k really try about $750k
anyone want to take a guess at a new mainsail or headsail.



Lots of money if you go 3di or something, but how much if you go for used TP52 sails or cross cut dacron like the stuff that people used to sail with quite happily?

Yes, making it all shiny and putting it in winning order would be a huge amount, but making it safe to sail and have fun on would surely be a different matter.
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
12 Sep 2026 10:42pm
cammd said..
I dunno, I think a foam cored hull is not designed or built to last 37 years. Especially one that has been raced hard offshore.






Well, years ago I asked John McConaghy and (I think) the Ulrechts who built Brinders how foam/carbon boats were doing. They both said that they had basically an infinite life span unless accidents occurred. At that stage the early ones were only 18 years old or so but some of them had already done lots of miles on the ocean and on shipping cradles, like Sagacious V. Macca said that he had been asked to go through her after her second trip to the northern hemisphere. He found a coin-sized patch each side near the mast that needed a touch so he mixed epoxy in a syringe and fixed it there and then.

Foam sandwich boats have been around since the ‘50s. Boomerang VII, the first big foam boat in Australia, survived 50 plus years including a bunch of Hobarts so how did she survive over 37 years, especially since cores, laminates and resins were so crude then? Even on of my Lasers is now about fifty years old and I don’t think it has any issues.

So what foam sandwich boats are having problems? What are the corresponding single-skin boats doing? What is the fatigue like when bending forces in a skinny single skin hull put the compression loads so close to the tension loads?



Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
10 Sep 2026 9:11am
The closest (very roughly) comparable boats on the market at the moment are the fifty-something Davidsons asking $120k-ish. Another datum point is the old Bobsled, which was beautifully converted for cruising, was asking for around $280k, and sold.

I think Brindabella was originally very well built and as a significantly bigger boat than the Davos you could arguably put well over $100k into her and not be over capitalising IMHO, but I don't claim expertise. It would be interesting to see if she could take TP sails. She could rate very well IRC - she's not too extreme.
Reply in Topic: Winter getaway
Chris 249
Chris 249
NSW
3616 posts
NSW, 3616 posts
27 Aug 2026 10:16pm
Good stuff.

I mainly take the LT on the yacht because it's easy to rig, but mainly because you rarely want to anchor in decent shortboarding areas. Rigging and connecting the board from the tender works well if that's an inflatable. I have taken the windfoiler on the boat but there's not many places with good anchoring and good wind for foiling.

I'd get ratty if I was on a cruising boat with good winds and no windsurfer! It's a pity that Starboard dumped their decent-looking inflatable longboard with a centreboard, as one of those could have been lots of fun.