Reply
 
Thread Tools Search this Thread
 
Old 14 July 2013, 18:38   #1
Member
 
Country: UK - England
Town: Plymouth
Make: Ribcraft
Length: 7m +
Engine: 200hp
Join Date: Sep 2012
Posts: 50
Automatic Lifejackets

So .... Today at Whitsand bay I swapped my 7.8m ribcraft for a 2.8m Rib (a well known brand) with a 8hp Yamaha which I was using as a tender between the mother ship and the beach. The Tender /Rib has an aluminium v hull. I was out earlier in the week and this tender goes almost vertical before it flattens out on the plane. It's a brand new set up with a Tiller type throttle.

I Make a run in to the beach with three of us on board,two dogs, kill cord attached and life jackets on. I drop the passengers off and head back to the boat. I go through the vertical phase and start planing. Next thing I know the boat is in a suicidal weave, I am thrown from the boat into the water and the RIB ends up, upside down on top of me. So I am under the boat in the air pocket. The wife's automatic lifejacket inflates next to me but the one I am wearing doesn't (thankfully) Once I re orientate myself and catch my breath I swim under the tubes and onto the upturned hull where some nice chaps in a speedboat kindly assisted, righted the boat and transported me and my rib with a seized engine to the mother ship (killcord still on my leg)

Anyway two questions/thoughts: 1) is a 8hp too heavy for such a small/light RIB? 2) I may have been wearing the only jacket (out of a dozen I own) that was not auto inflate. If it did I may have struggled to have reached the air-pocket under the RIB and I would have certainly struggled to swim under the upturned tubes. I therefore question how safe wearing an auto inflate jacket is. Any thoughts?
__________________

__________________
JeffD is offline   Reply With Quote
Old 14 July 2013, 18:47   #2
SPR
Trade member
 
SPR's Avatar
 
Country: UK - Scotland
Town: Central Belt of Scotland
Boat name: Puddleduck III
Make: Bombard
Length: 5m +
Engine: 50 HP
Join Date: Mar 2009
Posts: 2,066
you can always partial deflate your jacket to escape then top up ...

auto 100% time!
__________________
SPRmarine / SPRtraining
RYA Training Courses & Safety Equipment Sales
SPR is offline   Reply With Quote
Old 14 July 2013, 18:59   #3
RIBnet admin team
 
willk's Avatar
 
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 12,926
RIBase
Few thoughts:

Keep the autos.. You were perfectly safe under the RIB and you could have easily escaped.

Get a tiller extension and move the weight forward.

Trim your engine in a bit.
__________________
willk is offline   Reply With Quote
Old 15 July 2013, 03:10   #4
Member
 
Country: UK - England
Town: Plymouth
Make: Ribcraft
Length: 7m +
Engine: 200hp
Join Date: Sep 2012
Posts: 50
Thanks I will have a look at the set up.
__________________
JeffD is offline   Reply With Quote
Old 15 July 2013, 05:10   #5
Member
 
Glow's Avatar
 
Country: UK - England
Town: Lancashire
Boat name: Trigger Happy
Make: Bombard Aerotec
Length: 3m +
Engine: Tohatsu 20hp
MMSI: 235907196
Join Date: Apr 2012
Posts: 188
Out of interest, what was the sequence of events leading up to the capsize?

I know you mentioned a weave and didn't have a lot of time to correct, but I am interested in learning more so I can deal with this if I ever experience this.

What were the sea conditions etc?
__________________
Glow is offline   Reply With Quote
Old 15 July 2013, 07:20   #6
Member
 
kubcat's Avatar
 
Country: Australia
Town: Sydney
Boat name: Lunasea
Make: Ribtec 890SX
Length: 8m +
Engine: Yamaha ME 421STI x 2
Join Date: Aug 2009
Posts: 470
I have a 2.9 with a 9.9 and it also gets near vertical. The trick is to put the passenger all the way forward and gentle on the throttle till planing. If no passenger, I just lean as far forward as I can when getting up on the plane. Lots of fun when planing. I think the 9.9 is great and never thought it would actually flip but will be even more cautious now.
__________________
kubcat is offline   Reply With Quote
Old 15 July 2013, 08:44   #7
Member
 
Nick Hearne's Avatar
 
Country: UK - England
Town: Bucks
Boat name: Blue & Ding Dong
Make: Ribeye,SR4 & Bombard
Length: 6m +
Engine: 115,50 & 15Hp Yams
Join Date: Feb 2004
Posts: 3,242
All the weight of the engine & you in the back & hitting a braking wave coming off the beech & I’m not surprised you flipped it!
Get a tiller extension to get your weight forward.
__________________
Member of the Ribeye supporters club!!!
Member of Bombard 380 Aerotec club
Member of SR4 club
Nick Hearne is offline   Reply With Quote
Old 15 July 2013, 09:22   #8
Member
 
Country: UK - England
Town: Plymouth
Make: Ribcraft
Length: 7m +
Engine: 200hp
Join Date: Sep 2012
Posts: 50
I wish it was a wave. I was 50ft from the shore on a dead flat calm day. No waves. No wind. A perfect ribbing day.

The RIB is rated for a max 8HP

I got it on the plane and very quickly it started violently weaving. Because I was holding the tiller, trying to twist it to stop whilst trying to control a violently swerving boat is absolutely impossible. Then almost simultaneously I am in the water with a 2.8m RIB above me as I surface. The petrol tank is floating next to me and my wife's lifejacket (which I am taking back) goes off next to me.

I'm coughing and spluttering and I have to say I completely forgot I had a lifejacket on. As it is so completely disorienting being thrown at speed I can see the merits of Auto inflation but under a RIB I am certainly glad I picked the non auto.

Why did it happen? On Reflection I think a combination of factors but I suspect;

1. Too fast
2. A 8hp 4stroke is too heavy/powerful for such a light RIB
3. Too much weight too far to the stern.
4.Tiller handle limits seating position on the tubes of the RIB
5. No Trim.
6. No weight in the bow.

So once my engine has been cleansed (it has 1 hr on it) I will get a tiller extension to balance the weight, try to trim the engine, fix the petrol with a bungee to the internal bow cleat to act as ballast, consider other ballast in the bow if I am alone. Slow the speed of plane as low as possible once on it.
__________________
JeffD is offline   Reply With Quote
Old 15 July 2013, 13:09   #9
Member
 
Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
Did it flip side ways, or front to back?

Re the lj....the auto did its job why change it? Given a situation where you took a bang to the head as you flipped (for whatever reason) would you really want your wife to sink as she hadn't been able to pull the toggle?

It's as important to me to know how to deflate a jacket as make sure it inflates.

Clearly put a dampner on the day, but I'm sure and its clear you learnt a lot from it and if the only casualty was the ob (which is fairly simply sorted) I'd be a happy chap.

Glad you're both ok and credit to you posting the events. Shows even in the calmest of water things can still bite you very quickly.
__________________
PeterM is offline   Reply With Quote
Old 15 July 2013, 14:57   #10
Member
 
Boatnomad's Avatar
 
Country: Ireland
Make: Zodiac Mk I
Length: 3m +
Engine: 15 hp Yam two stroke
Join Date: Feb 2012
Posts: 728
"1. Too fast
2. A 8hp 4stroke is too heavy/powerful for such a light RIB
3. Too much weight too far to the stern.
4.Tiller handle limits seating position on the tubes of the RIB
5. No Trim.
6. No weight in the bow."

I would say,that about sums it up
__________________

__________________
Boatnomad is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Member's RIBs

Wings

Ovey

RIB

Epirb
Add your RIB



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 07:19.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.