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Old 14 October 2010, 16:00   #1
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Atlantic 21 First real sea test Grrrrr!!!

I have been using my Atlantic every day for months now but I have never come accross a descent sea (sea state 4/5) yet untill a few days ago. We have been having plenty of easterly winds knocking up a very confused sea. Anyhow, I thought it was about time I gave her a run for her money, a little bit of a mistake.
I am going to start by saying the boat is an incredible bit of kit for its age (1975) and I still love it. However, I have hit a few problems with it.
1) The coxwain and crew get soaked as the consol is mid craft (mainly following sea)
2) Very light at the front attacking a descent swell, so plenty of throttle experience required for a comfortable passage.
She is in need of chimes like the 75 for a following sea as she digs in heavy, resulting in the collar (tube) parting from the bow section.
I now have a poorly boat in need of a little TLC. I sometimes forget not all Halmatics are completely bomb proof Having said that, the fixtures and fittings are fantastic and really built to last.
I was hoping to join my ex collegues on there millitary advanced course (RM Poole) for a jolly through St Albans Race and Portland Race. Having said all this, there is a very similar problem with the Arctic 28. ( I remember a similar problem on a A 28 parting collar which was reinforced)
Going back to the issue, I have a friend who has worked on Weymouth ILB and he tells me there 21's were allways being sent back for a repair on the collar.
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Old 14 October 2010, 16:13   #2
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I can see how the collar could part company, my Arctics the same. Quite tricky sometimes to keep the bow from completely burying itself. I've seen the nose of the collar completely squashed out of shape by the back of a wave, I've got reinforcing straps but it's still a bit of a worry.

Been told by a well respected boat builder that it's partly due to the spray rails on the bow, theres a step on the top of the rail which catches the flow of water and guides the bow down even further into the water
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Old 14 October 2010, 16:19   #3
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The new SBS 28's they have put chimes all the way up the hull. Not like the smooth 28's we know.
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Old 14 October 2010, 16:20   #4
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I don't know much about the way ribs are constructed but I'd say that a bow detubing in a F5 sounds fairly serious. I'd have your boat checked out by a reputable surveyor because if that happens again and you're alone offshore it could turn out to be pretty grim. Thankfully I haven't managed to stuff my Ribcraft yet, despite my best attempts...
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Old 14 October 2010, 16:29   #5
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The boat is 100% fine. The reason for partial detubing is because the sea was very confused and very short and sharp from all angels. With any craft that size and weight I would put money on them being the same condition if not worse than a 1970's craft. A new all singing all dancing 9.5m offshore raiding craft, alluminium hull would have been running for shelter looking for a safe haven in the sea I was in. Its easy to limp any craft in, you just slow down and surf the boat in.
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Old 14 October 2010, 16:59   #6
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Did the same with the Arctic and split the tube at the bow, Henshaws reinforce the new tubes with Kevlar on the bow flap I believe.
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Old 14 October 2010, 17:12   #7
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seems relevant, the front fell off.............
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Old 14 October 2010, 17:23   #8
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Sorry, I disagree. If your boat's detubing in a F4/5 then there's got to be something wrong somewhere. Our boats are the same length and I've been out in rougher seas than that and have taken some almighty slams with no damage whatsoever. And I'm not saying Ribcraft are the toughest ribs by any means; they're not. It's just that no manufacturer would survive nowadays if their boats detubed in what essentially is only a fresh breeze, albeit one with confused seas. I really would take expert advice here and perhaps look to retube with reinforcement as mentioned above.
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Old 14 October 2010, 18:06   #9
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Quote:
Originally Posted by TMB View Post
The coxwain and crew get soaked as the consol is mid craft
Quote:
Originally Posted by TMB View Post
Very light at the front attacking a descent swell
Quote:
Originally Posted by TMB View Post
I now have a poorly boat in need of a little TLC.
Quote:
Originally Posted by TMB View Post
she digs in heavy, resulting in the collar (tube) parting from the bow section.
Quote:
Originally Posted by TMB View Post
The reason for partial detubing is because the sea was very confused and very short and sharp from all angels.
Quote:
Originally Posted by TMB View Post
The boat is 100% fine.

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Old 15 October 2010, 02:09   #10
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as a point of interest how old are the tubes ?,who made and fitted them ?
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Old 15 October 2010, 03:21   #11
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Hi Paul,
As per alll the halmatics boats I have worked on, it was a standard Avon tubes fitted by Halmatics.
I admit they could be newer but they are in great nick.
On a different note
I will put in a good word to the lads at RMpoole and Faslane that they should reconsider the type of craft they are using. It looks like RIBCRAFT from yoevil is the way ahead.
Oh a quick note, a force 5 is different to a sea state 5. Your talking about wind, Im talking about sea state. A force 4/5 would be great for ringo's down here it would be that calm.
A sea state 5 is cheeky. Thanks for your comments though.
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Old 15 October 2010, 03:21   #12
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You are a very bad man.

Mr Tilley has in fact got my old set of ripped tubes and I'm sure he'll be able to help you.
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Old 15 October 2010, 03:23   #13
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You are a very bad man.

Mr Tilley has in fact got my old set of ripped tubes and I'm sure he'll be able to help you.
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Old 15 October 2010, 05:08   #14
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Oh a quick note, a force 5 is different to a sea state 5. Your talking about wind, Im talking about sea state. A force 4/5 would be great for ringo's down here it would be that calm.
A sea state 5 is cheeky. Thanks for your comments though.
Hmm just a bit, though in fairness I missed it as well on the first read.

"Sea state 5: Rough. Wave height 2.5 to 4 metres"

That's a bit choppy
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Old 15 October 2010, 09:09   #15
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All fixed now
Ready for round two
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Old 15 October 2010, 09:12   #16
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Christ, that was quick! You must have only done some girly damage and pulled the bolt ropes out the runners.

By the way you need bigger engines on that thing.
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Old 15 October 2010, 16:55   #17
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Christ, that was quick! You must have only done some girly damage and pulled the bolt ropes out the runners.

By the way you need bigger engines on that thing.
Would love a couple of nice shinny new ETECs but money money money. The job was not to bad. I wish it was a few minutes work but it wasnt.
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Old 16 October 2010, 12:06   #18
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Hmm just a bit, though in fairness I missed it as well on the first read.

"Sea state 5: Rough. Wave height 2.5 to 4 metres"

That's a bit choppy
Sorry, I do apologise; I read it as a wind of F4/5 as well. Waves that big would detube my paunch so no surprise that you were having a hard time of it.
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Old 16 October 2010, 13:24   #19
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Sorry, I do apologise; I read it as a wind of F4/5 as well. Waves that big would detube my paunch so no surprise that you were having a hard time of it.
No worries, its just good to be out on the sea no matter what weather really!!
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