Water ballast

I'm pretty sure international English second language speakers understand everything i write here

Any boat has enough space to attach some safety posters of cpr, crew overboard, electric shock,etc just to name a few and it shouldn't affect the decoration or at least bring a plastified book

The major advantage of water ballast is even ditch permanent hull ballast, and so reducing boat structural weight while keeping the boat light and seaworthy with good dynamic comfort ratio

 

This is the major problem of water ballast, either you can have it full or empty.

Free surface effect - Wikipedia https://en.m.wikipedia.org/wiki/Free_surface_effect

Even freshwater deposits are a danger for this, all liquid in a sailboat has to be stored in a full container

 

I agree. No sailor shall drink any water to maintain the free surface effect to a minimum. The captain's parrot shall have a stock of Perrier.

 

Why not? These organizations are just made up of people with the same rights and interests as everyone else. They, as groups with an aligned maritime interest, are often in a position to understand their needs better than others. If the designer and builder of some "high production" boat thinks their design needs water ballast or not, that is between them, the official regulatory bodies and their customers.

But apparently, there's no shortage of opinions about who else should get to dictate regulations in boating.

There are plenty of home built yachts going to sea or simply fishing for bass on local lakes. Consider the OP is interested in doing that very thing (home build), despite the existence of regulations on commercially sold vessels that require a sticker, which the OP could probably obtain, if needed, which it is not, with the ease of applying for a driver's license.

I have little experience with water ballast. I would think at about 256 lbs or 116 kg for 4 cubic feet or 113 liters or in cubic meters, iron would only take up 0.25ft², and can sit lower and more centered. For a dinghy or micro cruiser, half of that weight should provide a significant righting moment. This could even be bolted to the bottom outboard, along the keel, without affecting its trailer-ability, and protect the bottom when beaching the boat.

If you want to reduce the weight on the trailer anyhow, attach a couple of Velcro straps to the garboards up against the CB/DB trunk and simply lift four forty pound iron plates into and out of the boat and put them into the back of the car. The key is to attach the weights so they don't shift in a knockdown.

If water ballast is still the answer, to self-fill upon launching, the entire tank needs to be below the waterline. You may not get any significant advantage to such a shallow tank. You're probably only drawing about 4 inches to begin with, so your tank would need to be no more than 3" in hight. Subtract another 1/4" for tank walls and at 64 lbs per foot², a tank that is 3" x 16" x 48" = 1-1/3 feet². This gives you 85.3 lbs. Not too bad.
You could probably even design a self-closing valve that shut when heeled or over-turned automatically.

-Will

 

That's why people used sand bags or rocks as ballast.

However when thinking about boat stability (instead righting ballast) a bigger mass of water will act as a motion damper just fine instead a bag of lead.

Also by sharing all loads across large areas or volumes the structural loads are less and the boat can be lighter just like a beam holding the same pressure across the length instead having punctual load in the middle.

Water ballast-watertight compartments are a simple system and should be considered for future sailboats and retrofitting.

Yacht clubs and regattas are cold places and nobody would trust f1 to regulate car safety and still cars with all that fake safety when the major problem is speed, are a social plague that should be banned for contamination (co2, noise, nanoplastic rubber,etc), deaths and injuries and social stress

 

You are once again showing that you are bizarelly ignorant and arrogant. Under your proposal, a 2.5m Optimist should start carrying posters about electric shock when there is no electricity on board.

You also have no idea about water ballast's effects. Have you ever sailed a water ballasted boat? Water ballast does NOT allow for reduction in structural weight and anyone who is sane can understand that.

It's becoming more and more apparent that you have probably never sailed further than reading internet from a basement or flat somewhere.

 

You are utterly dishonest and insanely arrogant. It is a plain and simple LIE to claim that all regattas and clubs are cold places and that is a stupid insult to throw at the many thousands of people (including my wife, friends and children) who go to them.

If no one talks to you if you to one it is because of your horrible personality and egotism - not because they are cold.

Sorry, mods, but this idiot has insulted friends of mine, and other intelligent and nice people I have not yet met, many times in his arrogant ignorant posts. He has alleged many people of pretty heinous sins and when his factual errors are pointed out, he childishly and dishonestly ignores the fact rather than engaging in the reasoned discussion this forum is for.

Many of his insults are aimed straight at people many of us know, so he cannot complain if we react in similar fashion. Surely if he is going to be allowed to remain on this forum, we must be able to reply to him in his own insulting fashion?

In my working life I have had to deal with many crimes and incidents of abuse. Permitting bad behaviour merely encourages it. If we put people like Herreshock on ignore it will not solve the problem that he insults our friends and many others who are not deserving of his childish and dishonest comments. Standing by while others are treated badly is not an ethical answer to bad behaviour by people like Herreshoff.

If you ban me because of my opposition to those like Carlos and Herreshoff, who engage in lectures and insults rather than discussion, that's a price I'll happily pay for standing up for decent behaviour and against these dishonest cowards.

 

Utterly wrong, as with just about every one of your posts. Anyone with an ounce of sense and experience knows that water ballast tanks can be baffled to effectively rid them of free surface effect, or a series of tanks can be used.

Such things are done in reality and if you stopped being so arrogant and actually learned, you would know about it.

 

I'm fine with personal attacks against myself or those I know, but for Pete sake it would be nice if we could reign in the pointless hijack with dumb information. At least have a cojent argument wrapped up in the ad hominem attacks.

Even the ignore button isn't able to work on a hijack as the thread devolves on a tangent of no use or value. Lord knows there are thread titles I'd like to respond to. In subjects with direct industry experience or close professional ties to, that go wonky and convince me not to bother working up a useful articulate answer.


On the subject of a small displacement boat water ballst. As a kid the village next door had the cannery and in the weeds behind it was a relative grave yard of small support boats being reclaimed by the earth (a sight common back in the day across alaska).

One upturned plywood and glass skiff had two fairly large threaded bronze holes up in the bow. Asked my grandfather what they were for and he said it was built by one of our eccentric local builders to offset some issues that arose in the evolution of the fishery. The tow skiffs would loose trim badly when towing with the more powerful outboards that were being built. Some guys were adding pods but they caused bad steering, others put big fuel tanks in the bow, others still would but piles of sand bags.

The solution was a sealed off large void in the bow with a couple holes in the front and a valve at the high point to bleed off air. When the support boat is winched up tight the bow is out of the water and it would drain. When released the water would fill the void bringing the bow down. Was told it worked really well as it was a more practical way to add hundreds of pounds of ballast to a boat that's only about 2500 and not have to drag more weight around when not needed.

Gear evolved and it's less of a needed solution, when we do need a solution I've plumbed watertight void to a wake surf system and works well enough, but it's much more complex and expensive.

 

Herreshock, your posts are creating too many complaints from other members. It's a problem when threads are getting derailed.

 

Yes sometimes there are controversial topics like trying to correct other people grammar as it's pretty disrespectful gesture, but these things have to be handled here and in the anchor area as well.

Besides the earth isn't flat and plenty of topics are interrelated and there's a real world outside thread indexation so while i prefer to keep on topic there are plenty of real world issues related to boats and it's important to talk about these same things the silent and boomer generation has avoided to talk for decades.

Sailboats have been the keystone of social exchanges for millenniums, they are linked to society, environment, agriculture, recent colonialism, pillage, etc, they are a matter of controversy and resurgence to take back their place or at least their positive role

 

So start a thread for those issues and stop hijacking legitimate thread about real questions of boat design, and insulting the rest of the world with your: world corruption, "recent colonialism", "pillaging", "cultural appropriation", they are trying to squash the little guy, everyone is out for number one except me, don't use polluting combustion engines, plastic, or electricity, hypocritical bull. Take your self-righteous and insulting campaign to a more appropriate place. It isn't here.

You have been asked and asked, then warned and you still can't help yourself.

Start a thread just for your sailboat social justice war. I have no doubt there will be plenty of people interested in fighting the "good fight" both with and against you. Probably end up being a longer thread than the Multihull Structure Thoughts thread. I've already stopped following one thread because of your participation. No big loss to the thread since I'm just an artist and not a NA, but I'm probably not the only one.

-Will

 

Ok, I should send you the ignoring as status quo criminality is not an opinion or "free speech" nor crime denial, and I'm referring about racial, environmental or colonial crimes you have mentioned.

I suggest you not to get too excited with these criminal system issues as you are a peasant cannon fodder and it's not about your victimism or your individual "consumer rights", you can join a shipyard brand forum or amazon complain threads

This change is coming whatever you like it or not and it's totally related to sailboats and so its rather thread inclusion than off-topic

 

Herreshock I think you would be welcomed, and be more at home, if you used the fora at Sailing Anarchy, at Home Default https://sailinganarchy.com/ where freedom of speech and thought is encouraged, and almost mandatory. You can say almost anything without incurring the wrath of professionals and industry experts with their combined wealth of experience; and the moderators there are very moderate. There, there is a wide range of free thinking contributors who will listen to you, and give beneficial feedback, in a freedom loving free thinking manner. You may attract a following there, and find kindred spirits with aspirations similar to yours. I go there myself, and enjoy it immensely. Good articles, good pictures, and a wide range of fora headings to delve into, with people from all around the world. If you frequent here, and don't change your attitude, you can expect more of the same; and denigrating helpful contributors will get you nowhere.

 

He's a charmer, Will, isn't he?

It's strange how someone who cannot even understand the effects of windsurfer sail luff curve can claim to understand the way the world is going, but that's Herr Shocking for you.