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The Ideal Rescue Boat

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JimC View Drop Down
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    Posted: 14 Sep 06 at 5:30pm
[from freak weather thread, I think I've got the most important posts)
Originally posted by JimC

Originally posted by Lucy Lee

It seems to me that there is really no excuse for anything more than a 10-15hp on a small rib with a soft bow.


For boat rescue yes. For personal injuries and worse its nice to think you can rapidly reach the shore and proper medical attention.


Originally posted by Lucy Lee

Hmm not sure I agree. Just trying to think through some possible/ likely personal injuries & appropriate rescue speeds (mind you, I probably am the 'appropriate medical attention' most places I sail!)


1. Head injury: very slow in case of likely concomitant neck trauma


2. Broken / Dislocated bone: very, very slowly to reduce pain!


3. Severe bleeding: depends on the number of people in the boat as someone is going to have apply pressure & elevate if possible and that is very hard if the boat is bouncing or you are driving!


4. Hypothermia: surprisingly slowly to avoid unnecessary movment for casualty & wind chill


5. Drowning / near drowning: This is the only one I can think of where you might want to absolutely floor it rather than attempt CPR in the boat.


I tend to be much more worried about propeller injuries and the monumental problem of getting people into a big rib! I'd also much rather have to deal with any problems like lifting an engine or manually starting one in a smaller boat. I've also had enough incidents with outboards big & small that get stuck in gear or with lousy throttles than rev uncontrollably to be wary of the big ones!



Originally posted by Iain C

Have to disagree on that one!


First priority on a rescue is counting heads. If you cannot get to a boat quickly enough to see the heads then you might have an issue, as I am sure you know it takes about 3 mins underwater to get brain damage. Even a small RIB will need more than 10hp to plane effectivly upwind in waves.


Assuming then worst case scenario you've abandoned the boat and picked people up to get them ashore and warm, 10-15hp will just simply be not enough. I regularly drive an Avon Searider 5.4 with a 60hp and even then you notice a big difference with 3 in it. Pick up another doublehanded crew (5 in total) and even then you struggle to plane (partly due to the double flooding hull construction of a Searider)


Add towing (windage on a dead boat can be huge) and the fact that you will never power-roll a biggish skiff or cat with 15hp and the argument for power is clear...however the driver MUST have the training and experience to handle it safely and consideratly.




Originally posted by Jack Sparrow

Like all these things everyones sort of right, aren't they, as it depends on
what venue, prevaling conditions e.t.c

Bigger sea's = bigger boat = bigger engine e.t.c

it's that power to weight ratio thing again.

but a 30hp would do most situations I would of thought on a matched Rib
/ inflatable - Zodiac / Bombard e.t.c

But get on the sea with a big fleet and it's a different matter.

As they said in JAWS - you're gon'a need a bigger boat.



Originally posted by Calum_Reid

Having driven a 4.5 meter Avon Sea Rider with 30 Hp Four Stroke Engine at the Cherub and Moth National at largo i must say we were strugling to get planing upwind in the waves at times. Not only that but the short rib is manouverable yes but a nightmare in the big waves as you just get thrown about. Whereas the big 7 meter sea rider that had the 90 Hp engine on the bk had no trouble in the waves and was able to be at any capsize well within a minute. Even at the other side of the big course. Neither of these boats are rescue boats but were borrowed from club members to do the job. I personaly feel that the big rib with the big engine was the most useful boat in the fleet.

So yes I agree with Jack Sparow on 'Bigger sea's = bigger boat = bigger engine e.t.c '


Originally posted by m_liddell

I agree with the stuff people have said about needing bigger rib/more power in bigger sea state.


Using small ribs with 30hp is fine but dealing with big waves or wayfarer full of water needs a lot more than that. I've given some 30min tows back even with boats like rs800s.



Originally posted by tornado435

Just a small point coming in late and not reading everything.


The big issue with big ribs is getting in them!! I was unfortunate enough to capsize my hurricane at a large inshore club a while ago. Boat was going onto the lee shore ( hard concrete) I had been thrown clear ( it was a good one). One of the club members had his big ( 7ish metre rib) there and they and I could not get me in it in a rush. In order to save my boat I got them to tow me while in the water, my call but still v dangerous.


I could have easily got into one of the clubs smaller Tornado ribs. I was a relatively fit 31 year old at the time.



Originally posted by Jack Sparrow

Originally posted by allanorton

Originally posted by JimC

Originally posted by ed490

with a chance of
an unpleasant meeting with the prop.
This is of course an
argument for a more powerful engine, means you can have a prop guard.
It terrifies me working with somone in the water with an unguarded
prop...


Without a prop guard you will be injured but the body part can be
easily removed or is thrown clewar by the prop, with a prop guard you
cannot remove the body part, and the limb, for example, would be drawn
further into the prop.



So in short: if you are part of the mortuary clean up team you would
prefer a prop without a guard so you can get home in time for tea?


Originally posted by Lucy Lee

Or if you are the only vaguely medically qualified person for miles, wouldn't you prefer a nice small rib the person could get into in the first place?




Originally posted by JimC

Originally posted by allanorton

with a prop guard you cannot remove the body part


If you can get the body part in it's not a prop guard is it?
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Post Options Post Options   Quote Guest Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 5:32pm

Depends on ...

Sea state, wind, tide, depth, driver skill and of course what it is your are trying to rescue ...

On average I'd go for a 5m RIB with a 60 on the back for looking after dinghys.

Rick

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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 5:37pm
Its all important stuff this. Clearly a propguard that you can get an Oppie sailor sized limb through is worse than useless.

So an ideal Rescue boat would have...

Low sides or at least one low side that you can roll injured folk in with the minimum of lifting and disturbance

A prop guard or protected impeller unit that cannot possibly cause injury, cannot or v difficult snag loose ropes (getting difficult here) and cannot shred sails

Enough speed to get to incidents fast (don't want folk drowning before you get to them)

Steady to not bump the injured too much on return.

Don't want much, do we.

(oh yes, and cheap for poor clubs to buy!)


Edited by JimC
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Post Options Post Options   Quote allanorton Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 5:51pm

I think the hull must be a rib, the tubes do provide good protection against other boats.  I also think that a centre console is necessary to give better balace and visibility.  Equipment should include knives & wire cutters, radio, possibly a spare bouy with tackle, anchor.  "Luxury" items would include GPS and built in radio.  Engine should probably be close to the maximum size specified by the hull's manufacturer.

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Post Options Post Options   Quote 29er397 Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 5:51pm
hang on a mo... Arn't you supposed to kill the engine as soon as you make contact with someone in the water? I may be wrong but that is what i was told on my L2 powerboat course. If that is not the case then surley it is not the design of the rib that is at fault, but the person driving it if it hits some one in the water?

Towing heavy boats is hard enough with the 50hp that we use at my club, i personally wouldn't want to attempt towing boats with anything much less than a 30hp. Apart from that, a bigger engine doesn't mean you have to use it at ful speed when you have a casualty on board, however it is very usefull when you have multiple boats over and need to count heads, especially High performance boats.

A last resort to getting a unable body out of the water is deflating one of the tubes, assuming the hull is stable enough without fulltubes, am i wrong in saying that they are designed to be able to travel with an uninflated tube?


Edited by 29er397
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Post Options Post Options   Quote Calum_Reid Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 6:08pm
Fergus you are correct. I'm sure ive heard a case of someone slashing a sponson to roll someone in. Not sure that would be of great use in big waves but I could be wrong.
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Post Options Post Options   Quote Granite Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 6:12pm
For small protected water and working with toppers/oppies I like a 4m RIB or dory with about 15-20 HP

For open water I would prefer something like 5.5 -6m with twin 30-40HP and twin fuel tanks should be able to get on the plane with one engine out for when one of them goes down. twin engines also gives great controll for an alongside tow. It is a bit pricy running two engines though.



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Post Options Post Options   Quote gordon Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 6:13pm

Ideally the RIB shouldn't be towing boats. The RIBs are there to ensure the safety of  competitors.

 

The ideal is to have a heavy launch with a good diesel engine for towing boats - I would also like to have such a boat availble for laying marks anywhere where water is deep and tides are strong. In this case a pot-hauling power winch would be a wonderful addition to the boat's gear(dream on)

 

Gordon

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Post Options Post Options   Quote BBSCFaithfull Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 6:16pm
I second that fergus! I have done a fair share of resuce duties at bbsc and i have to say that a rib is a perfext safety boat. I personally HATE commandos! they're rubbish safety boats. A rib is versatile and i would rather someone bumped my 14 with a rib than with a dory or commando! And yes when in contact with a casualty or man overboard the engine is turned off!
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 14 Sep 06 at 6:16pm
Originally posted by 29er397


hang on a mo... Arn't you supposed to kill the engine as soon as you make contact with someone in the water?


Its certainly what I was taught to do, but people make mistakes, people even fall out of boats, and its a big risk that is well worth reducing.

Edited by JimC
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