Broom query - glued frameless windows

[jfm]

LOL, I guess that also PJ or RH account for luddite builders, just as a couple of examples...

Well they will build anything you ask, and in RH's case better than virtually all others. Look at the glass on Twizzle frexample. Problem is at the size these yards work in you have to deal with the classification society's resistance, not the builder's. That's why I picked on SL - they build many boats sub 24m LLL not built to class yet they still refuse to glue their hull windows

Besides, proper trawlers are made of steel, and you don't want to loose the collision resistance properties of steel

Well that does depend on whether you plan on hitting anything. Being able to hit something so hard that you need a steel boat not to sink just isn't on lots of people's list of requirements. Rather like buying a plane: collison resistance is rarely something you ask the maker about. But most certianly this is an each to their own topic: there are serious boaters who do want ice class and do take their magnificant ships to those latitudes, and huge respect/admiration to them.

 

[hector]

I've have a friend who has a three/four year old broom with said bonded windows. He has had a number of leaks which Broom have had a go at repairing, ie taking out and re bonding, saw him last week............. Leaking again!

 

[kcrane]

not a fitting fault(manufactures fault).
the bmw mirrors twist off a metal boss that comes on the glass allready.
if the boss did come off we reattached with a two part glue from loctite...they didnt fall after that.!

Ah, that's the voice of experience.

You are right. The boss (I didn't know the right term) was on the original windscreen, but there isn't one on the replacement. It seems they screwed up taking it off the old screen and re-attaching it, and it fell off in my ownership (335i convertible).

And score number 2 to you, it was the two part stuff from loctite that fixed it, quite a small quantity if I remember.

 

[MapisM]

Well they will build anything you ask, and in RH's case better than virtually all others.

Bingo. Therefore, none of the RH clients asked for hull windows so far. Luddite clients for a luddite builder, obviously?

Look at the glass on Twizzle frexample.

Why, none of those windows are in the hull, I reckon?

That's why I picked on SL - they build many boats sub 24m LLL not built to class yet they still refuse to glue their hull windows

Ok, but did you see the side doors on their 92?
Now, those are something I could consider on my dream boat - surely not some glued glasses in the cabins.
I think that we're rather talking of followers vs. leaders here, whereas the glued windows band are obviously the followers.
In fact, it's your classification of the rest as "luddite builders" which is a tad biased, methink...

Well that does depend on whether you plan on hitting anything. Being able to hit something so hard that you need a steel boat not to sink just isn't on lots of people's list of requirements.

LOL, yeah, I guess that even Schettino didn't actually PLAN to go on the rocks.
But you said that the lack of windows hulls among trawlers builders "spoils their otherwise magnificant boats", and I'm pretty sure that among those who are interested in real trawlers, collision resistance has a much higher priority than bonded glasses, regardless of whether Antarctica cruises are in their plans or not.
In other words, for those who think that form follows function, rather than the other way round, it's actually a patched hull which spoils a boat...

 

[BartW]

I must admit that the real reason why I don't like hull windows is that they are freaking useless. All you need in cabins are portholes to ventilate them in hot weather, and windows do exactly the opposite: you can't open them, they make the cabin even hotter, and they are a pita to keep clean. Not to mention that they increase production costs, which in turn means that you pay more for the pleasure to look at a landscape which you could enjoy much better from above, anyway.

I’m afraid that on modern boats there is often no reason for form follows function, nor many other non rational features / options, but hey who cares?
While I’m personally not seduced by these big hull windows, first of all because BA has these magnificent and solid ss steel portholes, and secondly because I can’t afford a modern boat that has them, and thirdly I prefer the “ship” look (like trawlers)

But I do believe that the technology for these modern glued hull windows is state of the art.
Jfm ones again I’m impressed with your detailed technical knowledge of this subject,

Last summer I did a few “early morning departures, at sunrise, which was for me a wonderfull experience (all guests still in bed).
When a modern mobo with big hull windows was moored along us, I could imagine the excitement of these big windows, when you wake up in the morning while the boat is on anker in a nice bay.

Moreover the usual kind of customers for these boats, don’t care about the cleaning of the windows, nor the strength and the technology behind them, They mainly care about how can I enjoy the most of live on the boat.
All Imho.

 

[jfm]

Mapis you seem in such a grump this morning and you missed my clearly-made point about RH boats having to be built to class. My opinions are not biased - they are opinions. You don't have to agree of course, but that doesn't make them biased. Anyway this is o/t - let's agree to disagree

 

[MapisM]

Mapis you seem in such a grump this morning and you missed my clearly-made point about RH boats having to be built to class.

Sorry if I gave such impression, I can assure you that I'm not in a grumpy mood at all.
I didn't comment on classification society's resistance because I don't know a lot about their needs/thoughts.
Not as much as I know about trawlers, anyway.
If I really had to comment on that, I could only say that there must be good reasons behind their position...

Besides, you also ignored most of my own points: cost increase, sunlight warming effect, cleaning, better alternatives as in SD92, your own example (Twizzle) not actually having any bonded windows in the hull, "function follows form" philosophy behind the hull windows fashion.

Not that this was a problem for myself, mind.
And neither that made me think you were in a grump.
Agreeing to disagree is fine also from my part!

 

[MapisM]

Moreover the usual kind of customers for these boats, don’t care about the cleaning of the windows, nor the strength and the technology behind them, They mainly care about how can I enjoy the most of live on the boat.

I couldn't agree more, B.
That's what made hull windows so popular in the last years, nothing else: the market demand.
The debate so far was rather on the pros and cons, technology, etc., but at the end of the day if some boaters would demand self-sinking boats, they surely could find some yards willing to build them...

 

[Bajansailor]

Earlier this year I had a look around a Marquis 55 motor yacht here - she has glass windows 'bonded in' in the hull topsides, as shown in this typical example in the link below :

http://www.yachtworld.com/core/list...rt/MN/United-States&boat_id=2504014&noOfPic=1

On the boat I saw here, the smaller diamond shaped window (in the full beam master cabin) and the window in the starboard guest cabin (in the 'stripe') both had star fractures in them, probably caused by the transom corner of another vessel coming into contact with these windows.
Although there were no scratches or abrasions on the fibreglass hull itself.
Below is a photo of the fractured window in the guest cabin to starboard :

 

[moonraker 36]

Earlier this year I had a look around a Marquis 55 motor yacht here - she has glass windows 'bonded in' in the hull topsides, as shown in this typical example in the link below :

http://www.yachtworld.com/core/list...rt/MN/United-States&boat_id=2504014&noOfPic=1

On the boat I saw here, the smaller diamond shaped window (in the full beam master cabin) and the window in the starboard guest cabin (in the 'stripe') both had star fractures in them, probably caused by the transom corner of another vessel coming into contact with these windows.
Although there were no scratches or abrasions on the fibreglass hull itself.
Below is a photo of the fractured window in the guest cabin to starboard :

can tell you the cracks started from the bottom..hard to tell from internal shot,but that kind of craking is usually down to some kind of impact.
stress cracks usually have a single crack.