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Old 07 June 2010, 13:56   #1
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newbie - just aquired Rib

Hi there, Ive been prowling this site for a while now, vast knowledge base, Ive just bought my first inflatable and would like some opinions on it please, and advice on any other kit I might need.
Its a Yam 380s with a yamaha 15hp 2str, all 2001 and 1 owner, it seems in really good condition well looked after etc, and came with big launch wheels, anchor and rope, flares, petrol tank and spare, pump paddles and engine spares and tools etc, anyway Ive not been out in it yet, going to loch lomand this week to try it out, but I hope to use it mainly on the west coast, bays and islands etc, what Im asking is what kind of distance do you think would be safe to go offshore,( on a decent day), what kind of speed do you think its capable of, what fuel consumption etc, I know theres a lot of variables in here but any advice would be appreciated.
Ive had quite a bit of experience in the past on the west coast in ribs, cruisers and canoes, but this is my first inflatable, it will mainly be carrying 2 adults and 2 kids, 10 and 8 yrs old,
also Ive just bought 4 new life jackets and intend to buy a handhld vhf before going on the sea, any input would be great, thanks.
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Old 07 June 2010, 14:53   #2
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Originally Posted by kerlstone View Post
Its a Yam 380s with a yamaha 15hp 2str, all 2001 and 1 owner, it seems in really good condition well looked after etc, and came with big launch wheels, anchor and rope, flares, petrol tank and spare, pump paddles and engine spares and tools etc, anyway Ive not been out in it yet, going to loch lomand this week to try it out, but I hope to use it mainly on the west coast, bays and islands etc, .... ....it will mainly be carrying 2 adults and 2 kids, 10 and 8 yrs old,
ok thats a pretty similar set up to mine and similar sort of usage.
Quote:
what Im asking is what kind of distance do you think would be safe to go offshore,( on a decent day),
there is no easy answer to that question. It depends on the current weather, the forecast and the weather in the last few days (which affects the swells) as well as the wind direction and fetch (distance of open sea it has travelled over - which affects the waves). As well as what options there are for turning back etc. Bear in mind that when you turn round an OK sea can suddenly become a horrendous sea heading in the opposite direction. That will also be affected by tide, and in some places actually quite close to shore, by strong currents. So it might be perfectly OK to take 4 or 5 miles or more off shore in one spot in good conditions and completely horrendous only 1/2 a mile offshore in seemingly similar weather but where it is much more exposed.

Also what I would do on my own (or with other adults) and what I would subject my kids to is quite different. If it starts to kick up a nasty chop an hour from shelter, you can rest assured that the kids (and probably their mum) will not be too keen to go back on the boat next weekend if they get cold / wet / scared.

You might also go further offshore if you've got company with you who can help if something mechanical or a big air leak etc causes you a problem.

Quote:
what kind of speed do you think its capable of,
with all of you and the gear on board probably just shy of 20 knots, in good weather.
Quote:
what fuel consumption etc,
there are some rough rules of thumb: a 2 stroke at full throttle will burn 1 US gallon (3.8L) per hour for each 10 HP of engine size. So you will use 5.4L per hr at Wide open throttle (WOT). You'll probably not sit at WOT all the time so will actually use less. The other empirical rule on here seems to be that most RIBs use about 1 L per nm at cruising speed give or take about 20% (but in reality a SIB with a small engine will probably use significantly less). I did about 20 miles at varying speeds on Saturday and used less than 10L. How much you use depends on the load, the waves/weather and your driving style.

Whilst not absolutely essential a handheld GPS would be a useful addition to your kit if you are going any distance from your starting point (if nothing else it increases confidence from your "crew" if you know where you are going - and which bay you left the car at!

To get some inspiration on how far you could go - have a search for some of Zodiacman's threads (he's just posted another) and his Youtube videos. Bear in mind that they seem to take multiple boats and no children!
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Old 13 June 2010, 16:06   #3
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Hi, Polwart thanks for the input, I eventually got out on loch lomond with the boat, it went really good, Im well pleased with it, I dont know what speed i was doing but it seemed pretty fast to me, i recon maybie 20 mph or there abouts, 2 adults 2 kids, it got up on the plane in no time and we had quite a bit of gear on as well just to try it out, also a fair breeze on some parts. ive posted apic, thanks again.
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Old 13 June 2010, 16:14   #4
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looks like you got a nice rig!
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Old 13 June 2010, 17:02   #5
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Hi Kerlstone... this forum is a huge resource of information.
Sounds like you have the right kit, the boat has an anchor?

Just to agree with what Polwart said about how far offshore is too far,
I recently took the kids (just a year older than yours) out from Skye to Rum, it was very calm - warm temperature....11 miles there and 11 miles back, in my 3.8 m inflatable with a Yam 20 2 stroke. Would say we used 20 litres fuel all in so as I only had a 22 litre tank in the boat I was a little anxious coming back. It did strike me, that if the weather had turned when we were on Rum - not unknown - the trip back would probably have put them off boats for ever.
I took a handheld vhf, a PLB, flares, anchor, and my "get me home" bits for the motor. If it had failed, it would have been a very very long row/paddle back. You have to weigh up all these things, especially with your kids, make it fun for them so they want to get in the boat the next time. Plan ahead, and have a plan if things go wrong.
The next day - we had to turn back from a 2 mile hop across the loch, because the chop - although fine for me - was making them unhappy.
Enjoy the boat, it looks fine I expect the motor will run out of puff before you find the boats limits.
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Old 13 June 2010, 21:49   #6
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Hi Mustrib, thanks for that, yep ive got an anchor, been to rum a few times (on ferry), thats the kind of trips id like to be doing, tell me, what do you consider must have engine spares and tools, and can you recomend a handheld vhf, and do you need a license for it just to listen in, and hopefully not, use it in an emergency. Where on Skye did you launch for rum, thanks again.
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Old 14 June 2010, 03:22   #7
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Hi Mustrib, thanks for that, yep ive got an anchor, been to rum a few times (on ferry), thats the kind of trips id like to be doing, tell me, what do you consider must have engine spares and tools, and can you recomend a handheld vhf, and do you need a license for it just to listen in, and hopefully not, use it in an emergency. Where on Skye did you launch for rum, thanks again.
Yes - I recommend two things....
Get RYA Powerboat level 2 certificate - its a 2 day course - look on here you will find some good instructors.
Get your VHF certificate ...its a 1 day course...again start here, otherwise the RYA website for your closest instructors. Legally you do need a licence.

The handheld VHF I have is the Entel 640, very light and submersible, but ICom and Standard Horizon products are all top quality. Get something light and immersion proof would be my advice.

Launched from Ord on the Sound of Sleat.
Not the closest place you could launch from, but convenient for me.

My "bucket" of bits - has spare spark plugs, starter rope, long cable ties, kill cord, a few tools, plug spanner, some tape and a few bits of wire.
torch, 2 stroke oil, some rope. It all fits in a polybottle type waterproof container. I have second container, with Flares, a torch, another kill cord, more rope (mooring rope thickness) a handheld GPS.
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Old 14 June 2010, 04:06   #8
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Hi Mustrib, can you recomend a handheld vhf,
if you search the forum I think you'll find that the Standard Horizon H/Held (HX280?) that costs about 80, usually comes out in the final shortlist. Its what I have and I would happily replace it with an identical one. Personally I would stick to S/H, Icom, Entel etc and steer away from the cheaper less recognised brands (e.g. Cobra) having previously discovered that they are nowhere near as robust. If there is one bit of kit you want to work reliably everytime its your h/held vhf.
Quote:
and do you need a license for it just to listen in, and hopefully not, use it in an emergency.
There are two "licenses" - one for the radio (which is FOC from Ofcom) and one that is issued through the RYA for you as the operator. You need the free radio licence no matter what. I think technically you are possibly right and so long as you don't transmit except in an emergency then you won't be breaking any laws by not having the operators license.

However you won't actually know your radio works (in transmit mode). You will be missing the opportunity to use your radio for non-emergency purposes e.g. to tell the CG your plans etc; but perhaps most importantly the purpose of the course (in my opinion) is that you can transmit a clear and effective distress message. By practicing that in the classroom you might just be that bit more confident, or convey slightly more useful information than if the first time you ever use the radio to transmit is to scream for help.
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Old 14 June 2010, 14:47   #9
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Thanks again Polwart and Mustrib, agree with you completely on the safety factor, ive today booked a level 2 course and ill be doing a vhf as well, thanks for the advice, your right about what we would do on our own, or with mates, its not quite the same when youve got kids to think about, ive a few quid to spend yet, as im getting a towbar and wee trailer as well, just a couple more questions, could you recomend a gps, im not really up with all this tech stuff, and does my yamaha 15hp 2st have a shear pin, id carry a spare if it does, and lastly for you Mustrib, ive posted a pic you should recognise, took it last summer and now use it as a screensaver to remind me what im missing.

thanks again.
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Old 14 June 2010, 15:25   #10
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That's a stunning pic. One of those special moments in time...
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