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Old 23 June 2003, 09:12   #1
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Hard versus Soft Nose!?

Following on from Magellan Alpha's little disaster and from my own incident last year, I was wondering what the general feeling was towards having a hard nose or soft bow nose. The incredible forces that the tubes are subjected to when you 'stuff it' would be of serious concern to me. Scorpion, Osprey and a few other manufacturers give a choice between the two when a rib is 'specced up.' Why does everyone not just go for a hard bow nose? People like Nick Gilbertson and other manufacturers and tube-makers who post here could have some important information for us all - particularly those who have actually not given it much thought previously. Any comments?
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Old 23 June 2003, 09:33   #2
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All I can say is that with the benefit of your experience, and now Mike & Di's, if I could afford a hard nose, it would definitely be on the shopping list!

(I bet Mark was glad he's got the hard nose on his boat)
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Old 23 June 2003, 09:42   #3
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Depends on the size of RIB

I dont think a hard nose is needed on say a 7.5m or less RIB. However when you get to bigger boats with much more weight and momentum behind them it is clearly the way to go IMHO. Your experience, Mikes, Chris Strickland etc. Either that or slow down a bit Redbay put hard noses on their big RIBs for the same reason.
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Old 23 June 2003, 09:55   #4
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That seems sensible to me too.
Is there anything against having a hard nose then?
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Old 23 June 2003, 10:01   #5
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The case against.......

Well the only things that spring to mind would be perhaps a harder ride as their is no cushioning effect of a soft bow burying itself into a wave. Also less bouyancy at slower speeds - although I know that Cyanide goes through a channel chop at 12kts not over it even with a soft nose. Finally more chance of damaging boat or other boats when manouevering in a marina!
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Old 23 June 2003, 11:15   #6
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Quote:
Originally posted by Brian
That seems sensible to me too.
Is there anything against having a hard nose then?
Was it not Tony of Flatacraft experience that once debated the pros and cons of a hard nose ?

Seem to remember something along the lines of the forces being strong enough to rip off the sponson were also likely to be strong enough to do some serious damage to the hard nose as at least the sponson does have that cushioning effect.

I belive the same source also stated the way in wich he felt the bow of the sponson should be fixed. HD Webbing at the collar, and also by clever design and use of webbing (or other straps from bow eye over the tube to the deck at the bow and same at right angles over the tubes at the bow the force that rips the sponsons off can be made to actually pull the straps tight and roll the spons on.

Very poor explanation on my part.

IIRC it was in a recent (ish) copy of RI magazine.
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Old 23 June 2003, 11:31   #7
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Re: The case against.......

Quote:
Originally posted by Alan
Finally more chance of damaging boat or other boats when manouevering in a marina!
I do realise that many people have ribs simply because they are crap at berthing etc and use the tubes as a great big fender. This surely is not a reason to have a soft nose. I raised this thread as a matter of safety. Your previous post Alan, re size matters also would not hold true. I witnessed a 5.8 Humber on the east coast of Jersey rip the front off as well. It was a newish boat, well looked after. As Brian says, is there is anything against it?
I would consider it seriously now particularly what I know now and did not then!
Any other thoughts?
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Old 23 June 2003, 12:15   #8
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And for those "Old hands" Does anyone remember Mikes Deacons first hard nose rib in Scotland? That came off as well!
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Old 23 June 2003, 12:17   #9
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Re: Re: The case against.......

Quote:
Originally posted by Charles
I do realise that many people have ribs simply because they are crap at berthing etc and use the tubes as a great big fender.
Errm not sure thats true, although mebbe in some cases! There are folks who use their RIBS in support of yachts etc where a hard bow would be a disadvantage. I was merely trying to think of other reasons. Most RIBS of small/medium size are soft bows. (Osprey being the notable exception). Why is this? Cost? Performance? Dunno, back to you Charles!
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Old 23 June 2003, 12:21   #10
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Although I would prefer a 'hard nosed' RIB (and without been an 'expert' on the subject-unlike many) I would say that in respect of safety it makes no difference what you have on the boat, provided all is constructed as is suppose to be constructed.

I know of 7, 8,10 and 15 mtr Loa RIBs that they have soft noses and NEVER had a problem due to the very high quality of construction and materials used. But I also know of RIBs that having an inferior construction ripped up all the pontoons on the first hard dive they got.

I also know of RIBs 7, 8, 10 and 15 mtrs Loa with hard nose and some of them are very good and some are rubbish.

So I think is how good, reliable and honest manufacturers are when they advertise that they can build a seaworthy RIB

This reply doesn't help, does it??
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