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Old 25 April 2013, 07:21   #21
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I have used a 5kg grapnel anchor and 5m of 8mm chain on my old 3.8m sib. It never moved anywhere when anchored in four years. I have now put a 3kg Bruce anchor on to the same chain for my 5m Zodiac rib.
As for anchoring at a beach I have tied a rope to the anchor and balanced it on the bow. I have then pushed the boat out and when deep enough pulled the rope to drop the anchor and secured the rope with a rock on the beach.
Only down side is doing so on a on shore wind.
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Old 25 April 2013, 08:27   #22
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Thank you for the sketch . I suppose the key is plenty of rope in the loop to compensate for rising/falling tides.
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Old 25 April 2013, 11:32   #23
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Another thing to keep in mind is that the anchor on the beach is what is holding the boat in place. Attaching to a suitable rock is probably sufficient, using a dog stake is not (I've tried this). The sand under the water is much more compacted than beach sand. An anchor that can hold in the bottom may not hold on the beach.
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Old 25 April 2013, 16:14   #24
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Hi Jeff
If you are out and about around plymouth get yourself a small tender of some sort especially on a rib that size .
The methods described are fine but at cawsand you will get hassle for blocking up the swimming area etc in the summer , plus there is a passenger ferry running out of that beach so moor on the right as you face the beach from the sea .

I expect you will end up around whitsand in the summer and the gently sloping beach and surf makes beaching a larger boat difficult .

will look out for you
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Old 25 April 2013, 17:00   #25
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Do you have any pictures of the setup?
Sorry lads I didnt see this earlier .. here ya go

This will be familiar enough for those ancients among us, my old fella made it good and tidy for me last year, with a spliced fly lead , to go to the boats bow eye and this one is good for a 30M reach.

He made it with a smaller diameter rope than I would have, but that said .. it will take less room on the boat as such. and the current RIB is only a 5.4 anyway

So your deep end has the sea anchor (something light) at point A .. your bow eye goes to B .. and the uncoiled loop on the drum goes round another anchor up the beach

You can drop either end first but you need to know your tides and how long you want to park up for ... and the slope and run on the beach which is a factor of either of the others

*edit*

Like I said earlier .. just make sure your deep water pulley. pictured between A&C has a swivel on it, because some ropes especially like old nylon are a devil for twisting as you pay them out, so it makes it really hard to pull out and in, and you dont want to look like a tit on the beach with your new fangled rig .... and you have to swim to the boat anyway ..
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Old 25 April 2013, 17:08   #26
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.. here ya go
We'd call that an outhaul down yer. The prob being with such set-ups including trips, which i tend to use, being tossers motoring about between the anchored boat and the shore and potentially chopping up the line to shore.
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Old 25 April 2013, 17:27   #27
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We'd call that an outhaul down yer. The prob being with such set-ups including trips, which i tend to use, being tossers motoring about between the anchored boat and the shore and potentially chopping up the line to shore.
Aye theres not much new on the tech .. but up our way I could read one end of the guardian/daily sport .... to the other, without sight of another soul none of that rig floats nor is a trip required
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Old 25 April 2013, 19:23   #28
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Thanks everyone for the tips. Having people watch me make a tit of myself means that i will give them a go and practice. I have even thought of a pulley on the anchor. I throw the anchor over the bow as I approach attached to a large loop I attach the bow rope. I disembark and pull the loop taking the boat out to the anchor and fix the rope to a rock. On my return I do the opposite and pull it in. Has anyone tried this?
Yes I've done it. Basically rigging a clothes line (giant loop) and the boat is like a piece of laundry. The anchor is seperate and forms the outer pulley of the loop. The inner end of the "pully" is fixed to a tree or rock. In your case you might need a second anchor ploughed into the beach sand. Use the loop to pull the boat offshore, then pull the other end of the loop to pull it back. Having 2 different colored lines making up your loop helps alot. Mine were 50m long each. The giant loop ends up being a lot of line, and it can be hard to get the distances right. The slope of the beach relative to the tidal range is a challenge. We have 4+m tides here and some beaches are just not workable on some days.
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Old 26 April 2013, 01:48   #29
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.........none of that rig floats nor is a trip required
My trip line is also a sinker, but I've had twats tripping over it on the beach and stubbing their toes on the baby folding spider anchor.
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Old 27 April 2013, 03:07   #30
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RIBase
Anchor slightly off the beach and get this.
Waveco 2.3 Inflatable | Second Hand Boats and Engines

Problem solved!
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