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Old 02 August 2006, 07:16   #11
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ah - power trim and tilt, now that does give a problem. The local lads who are beach launching try to avoid engines with PTT at all costs just cos of that problem. with manual tilt just take the lock off and either let it come up as it grounds or have crewman there to lift it as helm takes power off. In forward drive he cant pull it up against the force of the prop. For what they are doing ribs are not the boat for the job-need something with a big transom well to catch the wave as it comes inboard and hopefully keep most of it outa the cockpit.
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Old 02 August 2006, 07:24   #12
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we have to do the same at my local sailing club on a lee shore at HW it gets very rough. we just unlock the engine and aim for the beach a tad faster than the waves with people ready to pull the boat clear of the surf

i anticipate there being a "problem" first time the "new" engined boat (4stroke with PTT) gets caught out in the rough. the only solution will be to anchor off and wait for the tide to go out and the sea to calm down.
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Old 02 August 2006, 07:35   #13
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Quote:
Originally Posted by wavelength
ah - power trim and tilt, now that does give a problem. The local lads who are beach launching try to avoid engines with PTT at all costs just cos of that problem. with manual tilt just take the lock off and either let it come up as it grounds or have crewman there to lift it as helm takes power off. In forward drive he cant pull it up against the force of the prop. For what they are doing ribs are not the boat for the job-need something with a big transom well to catch the wave as it comes inboard and hopefully keep most of it outa the cockpit.
OK, I couldn't see an obvious solution, I guess because there isn't one then

I don't intend to come ashore on most of the surf beaches on the south coast anyway, on the basis that most of them are minefields....
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Old 02 August 2006, 07:38   #14
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with the bigger engines (EG Mec V6) you get a dual speed trim and tilt (IE tilt is quicker than trim) i reckon if you drove in trimmed right up you could tilt clear in time.

with the smaller engines the trim is usually one speed (as with aforementioned 4-stroke 60hp merc) and it's really slow.
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Old 02 August 2006, 08:07   #15
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Originally Posted by Limey Linda
... Sea anchor and drogue are different appications of the same piece of kit.
I'm not sure about that. A drogue would only need to be about the size of a big bucket but a sea anchor needs to be many feet across. Also, a drogue really needs to be fitted with a tripping line. Anyway, it's just imaginings, as Pete says, I would expect your rib to fill up as the first sizeable wave passed by then your boat would weigh about 5 tons. That would be fun.


I'm not sure about the flooding hull thing. In my canoe surfing days, a boat full of water was very unstable. In fact, if one got trounced and had to get out of the boat, it could then just be inverted to empty it using one hand.
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Old 02 August 2006, 08:12   #16
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I'm never sure when a drogue becoames a sea anchor as far as size is concerned but i dont rig ours with a tripping line. On the grounds that i can drag m'boat to a proper anchor if i have to before lifting it I can also drag the boat to the sea anchor and then get hold of the top edge to spill the water. i can get into trouble with one bit of string-two bits is stretching my abilities too far perhaps
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Old 02 August 2006, 08:18   #17
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My understanding is that a drogue is not a sea anchor at the stern, it is just a device which causes enough drag to prevent the boat being broached but is does allow the boat to be driven forward. Or it can also be used in a line tow situation to help keep the towed boat straight and even out the snatch. Hopefully, I'm never going to need to find out for real.

Quote:
i can get into trouble with one bit of string
It's reassuring it's not just me who has that problem!
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Old 02 August 2006, 08:19   #18
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I did suggest once that we buy and carry a sea anchor in case it was required, this drew an incredulous response from our then Diving Officer.

May just re ignite the debate within the club again for a laugh. Though there may be a number who would now endorse Linda's pants as a drogue especially if she was aboard during the temporary secondment of her garments.
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Old 02 August 2006, 13:03   #19
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Quote:
Originally Posted by Simon B
I did suggest once that we buy and carry a sea anchor in case it was required, this drew an incredulous response from our then Diving Officer.

May just re ignite the debate within the club again for a laugh. Though there may be a number who would now endorse Linda's pants as a drogue especially if she was aboard during the temporary secondment of her garments.
Linda's pants are very big and effective. However it is very difficult to "get in them" On a more serious note: anything you can drag behind any boat to keep it head on into the direction you wish to go, wether it be a following or head on sea is a good idea. The basic idea is " don't get rolled"
Regards, T.
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