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Old 24 July 2011, 18:52   #21
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Best being in harbour wishing you were out at sea ,that being out at sea wishing you were back in harbour,
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Old 24 July 2011, 19:31   #22
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It's worth bearing in mind that the wave heights in the sea state presumably relate to the "significant wave height" this is a statistical measure where roughly 1 in 100 waves will be 1.5x the stated size... and there is a reasonable chance of encountering a save double the height.

I wouldn't base my decision entirely on the forecast any more than I would when the forecast is good and it looks nasty when you turn up. Only you can make the decision on your experience, competence, the capacities of the boat, engine and other equipment, and your personal attitude to risk. If the sea state is even at the nice end of 'moderate' then in a 4m sib its not going to be a particularly fun or comfortable trip for most people. If the worst were to happen then finding your boat won't be trivial in those seas, and finding a person in the water even harder.
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Old 24 July 2011, 21:45   #23
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Originally Posted by rik_elliott View Post
A decent sized sib will manage a force 4 to 5 no problems, and probably high end moderate sea state. You won't though.
Agree, above about F4 its just too hard on me even though the boat's got loads more in her.
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Old 25 July 2011, 02:18   #24
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Adam, was thinking about going out at tynemouth in the harbour area. might just play in the harbour
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Old 25 July 2011, 03:02   #25
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Expect all advice to be ignored by new members as is common on the forum lately! SIBs have a very poor hold on the sea and move very quickly in a F3/4 when your engine fails, posted earlier but just to ask again:

"...guessing you have a good anchor, LJs, flares, VHF etc and someone who knows when/where you are out/back." Have you done PB2?

?
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Old 25 July 2011, 15:01   #26
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Adam, was thinking about going out at tynemouth in the harbour area. might just play in the harbour
You can launch at the beach/slip next to the sailing club. We always launch there, then go up the river or out of the piers to the coast. Gets a bit messy in the piers with the river and sea meeting. We will probably be there next weekend, might see you out.

Adam
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Old 25 July 2011, 16:05   #27
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yes thats the same beach as ive been using, im also out next weekend hoping to view the airshow from the sea, just played in the river today, had a laugh with an inflatable ring.
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Old 25 July 2011, 18:29   #28
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We had the same idea to watch the airshow. Are you going to cruise down to the Wear?
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Old 26 July 2011, 03:53   #29
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Most inflatables are design cathegory rated as "C". This is Beaufort wind 6 and 2 meter waves. I believe this is a contradiction as Beaufort 6 means "big waves dangerous for small ships", so I guess that rate is to let them be sold as "safety boats for bigger ships".

The closer to the coast, the more dangerous is the sea. Breaking waves can make you capsize. Water inside will make your boat heavier and slower (even though, a little water will make it more stable).
When looking for a shelter you have to govern against wind and waves: so you need a good engine, but you cannot full open throttle it for top speed. Waves must be passed by on a diagonal direction.
If you govern on favour of wind and waves, in the best case you will end up in a beach with 2 meter breaking waves.

My boat is 4 meters 20hp. I never go boating when wind is stronger than 16 knots.
I always check both windguru and local forecast (Agencia Estatal de Meteorología - AEMET. Gobierno de España in Spain for maps) for wind speed, waves height and wind direction, and also hour of the day as a nice morning can be a horrible afternoon. My internet mobile phone is perfect for planning: and my family and friends know that it is not me who decides to go boating, but weather does.

When I see a little foam on top of inside sea waves (such as "small sheep"), that makes me think of beer, so I better govern my boat to the pub...
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Old 26 July 2011, 04:38   #30
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Most inflatables are design cathegory rated as "C". This is Beaufort wind 6 and 2 meter waves. I believe this is a contradiction as Beaufort 6 means "big waves dangerous for small ships",
That's interesting I've never seen a version of the Beaufort Scale which cast "judgement" on what was safe for different vessels - merely a range of wind speeds and the land and sea observations you might expect.

Quote:
so I guess that rate is to let them be sold as "safety boats for bigger ships".
almost certainly not. Firstly the RCD doesn't apply to vessels used commercially. Secondly where vessels are required to have "safety boats" these usually have to be Solas approved - which it is unlikely any "off-the-shelf" SIB sold to the domestic market it.

However - it would certainly be niave to say the boat is designed for F6 and 2m waves so I should go out in that! There is an article in the most recent Rib international questioning the validity of some RCD Cat C labelling for precisely this reason. However I think (according to my understanding) that both you and the author of that article have missed the point of the RCD. (1) It is about European harmonisation so goods flow freely without each country making their own local rules - don't assume it has anything really to do with the safety of boats (2) a boat which is Cat C labelled doesn't have to be fun/comfortable/sensible to use in those conditions - it simply needs to stay roughly the right way up, not sink and not fall to pieces. A SIB driven carefully in those conditions should achieve that - but the crew may be scared to death, battered, bruised, sea sick and totally exhausted by the time they get back.

Quote:
When I see a little foam on top of inside sea waves (such as "small sheep"), that makes me think of beer, so I better govern my boat to the pub...
In the UK these are referred to as "white horses" although I think your description is probably better!
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