which warning to place on the side of the boat, for the stabilisers ?

[BartW]

boat is out of water for different jobs,
just thought of the warning decals on the hull sides, for the stabilisers
what is the correct expression ?

O- - - - - -DANGER - - - - - - -O

or

O - - - - -STAY AWAY - - - - - -O

or

O - - - - -KEEP CLEAR - - - - - -O

or ?

O is the no swimming pictogram

or what do others have ?

 

[jfm]

boat is out of water for different jobs,
just thought of the warning decals on the hull sides, for the stabilisers
what is the correct expression ?

O- - - - - -DANGER - - - - - - -O

or

O - - - - -STAY AWAY - - - - - -O

or

O - - - - -KEEP CLEAR - - - - - -O

or ?

O is the no swimming pictogram

or what do others have ?

I think that you need a sticker to give you some protection in case of litigation. But if you have a sticker, you are by implication admitting the things are dangerous and need the sticker, so the sticker must communicate. As you take the boat to many countries, a single language will not work imho (in the eyes of a hostile lawyer for the plaintiff). So I strongly think you need the international "no swimming" symbol or some other internationally-recognised symbol

As an additional point, the sticker is very useful to the guys driving the travelhoists, so they don't catch the lift straps on the fins

Funkymonkey made mine. Let me know if you want me to post some pictures

 

[Canopy Locked]

No help to the OPs' question, but why do you need warning signs? I did not think Stabilisers had whirring props or other ways of churning unwary swimmers. If they stick out from the boat, perhaps a sign indicating "No Diving"

 

[BartW]

Let me know if you want me to post some pictures

yes pls if you have the pics available show me how you did it,
I like to have it as save and clear as possible, but at the same time nice and clean

 

[BartW]

I did not think Stabilisers had whirring props or other ways of churning unwary swimmers. If they stick out from the boat, perhaps a sign indicating "No Diving"

my stabs do move out from the sides of the boat, and can touch or hurt swimmers too close to the boat !

 

[AndieMac]

my stabs do move out from the sides of the boat, and can touch or hurt swimmers too close to the boat !

Hi Bart, just to understand, the fins are also (randomly) active while the boat is at anchor to eliminate any roll?

 

[jfm]

Hi Bart, just to understand, the fins are also (randomly) active while the boat is at anchor to eliminate any roll?

Yes. See video below. The fins aren't moving much because the anchorage is calm but they can move much further and faster than in this video - see 3:57 for the fin coming past the chine

Bart, this video also shows the stickers, at the beginning and 1:56. This is my previous boat; on current boat I kept the round "no swim" symbol in the same red/black colour but I changed the 2 arrows to a silver colour, matching the silver stripe on the side of the hull, so it looked nicer

 

[Pinnacle]

Hi Bart, just to understand, the fins are also (randomly) active while the boat is at anchor to eliminate any roll?

They sure are! See here http://www.ybw.com/forums/showthread.php?355619-Forum-Dive-cruise-On-Blue-Angel-october-2013/page13&highlight=Angel

 

[MapisM]

No help to the OPs' question, but why do you need warning signs? I did not think Stabilisers had whirring props or other ways of churning unwary swimmers. If they stick out from the boat, perhaps a sign indicating "No Diving"

Not only they can stick out from the hull sides, but they can do that with enough speed and strength to stabilize some 60 tons of boat from rolling.
No prize for guessing who between the fins and a swimmer's head would suffer more damages, in the unfortunate event of a collision...

 

[Nick_H]

I don't have anything to add on the signs question Bart, but on your recommendation we are currently anchored off Theoule sur Mer. We haven't dropped the hook here before but it's a lovely spot, and the weather is amazing for time of year, just like a summers day. Actually you wouldn't need the signs today, as there's zero wind and swell, and hardly any other boats around creating wakes. It was so hot yesterday that we even swam round the boat! We haven't done that before at Easter.

 

[Uricanejack]

As far as I know there is an internationally recognised symbol for bow thrusters‘.
Never seen one for stabilisers or fins. So I doubt it is mandatory

If you want a symbol I would suggest a little pictogram wing with an up and down arrow.

More important to have a symbol on the console for out and in.
Parking with stabilisers out can be a real downer.

 

[Uricanejack]

Unless you were anchored in a fairly strong current stream. I would not expect stabiliser fins to have much effect. Although if deployed and the boat rolls I suppose they would react.

 

[rafiki_]

boat is out of water for different jobs,
just thought of the warning decals on the hull sides, for the stabilisers
what is the correct expression ?

O- - - - - -DANGER - - - - - - -O

or

O - - - - -STAY AWAY - - - - - -O

or

O - - - - -KEEP CLEAR - - - - - -O

or ?

O is the no swimming pictogram

or what do others have ?

Bart, while the JFM advice on this is excellent! you might also check with your Insurance Company. Whatever you decide, I would suggest you ask for written consent from them that you have complied with their needs. That way, in the unlikely event of a claim, you have done all you can to satisfy the Insurer.

 

[jfm]

More important to have a symbol on the console for out and in.
Parking with stabilisers out can be a real downer.

With modern gear they have become a bit more fool proof. They lock in the centred position as soon as they sense the boat is doing <3 knots, and also when they sense reverse movement. You have to switch on positively the zero speed function.

So I doubt it is mandatory

It's not mandatory, but that isn't the point

Unless you were anchored in a fairly strong current stream. I would not expect stabiliser fins to have much effect. Although if deployed and the boat rolls I suppose they would react.

These are zero speed stabs (aka STAR= stabilisation at rest). I think you're talking about non zero speeders

 

[jfm]

Bart, while the JFM advice on this is excellent! you might also check with your Insurance Company. Whatever you decide, I would suggest you ask for written consent from them that you have complied with their needs. That way, in the unlikely event of a claim, you have done all you can to satisfy the Insurer.

Careful there. I agree you should tell an insurer about a retrofit of course, but having done that and assuming you are compliant under the policy terms, there is an argument you should do no more. I mean, if you ask them their requirements the question will be passed back to the u/writer who might be having a risk-averse day at the office. You might get a reply you don't like!

 

[Uricanejack]

These are zero speed stabs (aka STAR= stabilisation at rest). I think you're talking about non zero speeders[/QUOTE]

Never heard of those so I will have to look them up. quite curios to figure out how they work with no water flow.
I would think a flume tank would work at zero speed. but have no experience with them.
I have some experience with fins which requires speed. The big problem was crab traps rather than swimmers. Dolphins didn't seam particularly bothered. I'm a little surprised insurance would insist on marking on the side of the vessel. I'm sure we never had any.

There again some of us used to keep small runabouts moored med style on a long line from government dock until there was a nasty accident when some fool on a jet ski went under a dock up up the coast a bit. No more med mooring to the dock.

 

[rafiki_]

Careful there. I agree you should tell an insurer about a retrofit of course, but having done that and assuming you are compliant under the policy terms, there is an argument you should do no more. I mean, if you ask them their requirements the question will be passed back to the u/writer who might be having a risk-averse day at the office. You might get a reply you don't like!

Yes, of course you are right, it is a fine line, and might depend on Barts relationship with the insurer.

 

[MapisM]

Never heard of those so I will have to look them up. quite curios to figure out how they work with no water flow.

Very very easy, in principle.
The fins axle is much more forward compared to non-star stabs, and by "slapping" the fins quickly against the water, they contrast the boat roll.
Of course, there's more than that to make them work properly (sensors, hardware, software), speed of reaction being a key factor, but not the only one.
Otoh, this is in a nutshell the reason why they don't need any water flow: the principle is more similar to an oar, rather than a rudder.
Of course, the software makes them work differently while under way.

 

[jfm]

I'm a little surprised insurance would insist on marking on the side of the vessel. I'm sure we never had any.

Just to be clear: no-one is saying insurers are insisting anything. I've owned 2 STAR boats including current boat and insurers have made no special requests at all. BartW's question about having a sticker is only based on good practice/seamanship, and reducing his 3P liability risk, and has nothing to do with demands from his insurers

 

[MapisM]

Well, if as I understand Uricanejack only knows how cruising fin stabs work, it's not surprising that he doesn't see the point in marking the hull sides, regardless of insurance implications, if any.
Hard to think of someone swimming alongside while the boat is cruising...