Ways to secure catamaran on paved surface

i can definitely say that the weight of the trailer and sailbox will not keep a cat flat...
http://www.flickr.com/photos/64069794@N03/8657509417/in/photostream/lightbox/
j

Edited by arch on Apr 17, 2013 - 10:43 AM.

Get 2 bags (or more) of concrete mix (use one for fence posts that don't require mixing $4.50/bag). Stick an eye bolt into it, cut the slot to allow the water in and poor water. You can also use pails instead original bags. 1/2 an hour later you will have pretty heavy anchor (I learned that from Italians 😆 ).

i can definitely say that the weight of the trailer and sailbox will not keep a cat flat...
http://www.flickr.com/pho…in/photostream/lightbox/
j

That's a crazy picture! I never would have thought about the need to tie down a boat attached to a trailer, but i guess it makes perfect sense. I've suddenly become more interested in this discussion... :-O

asphalt is not a very strong surface to anchor into....concrete would be better.

see if they will let you put these anchors into the pavement. then use an eye-bolt instead of a regular bolt so you have something to tie onto. if you remove the eye-bolt, nothing should remain to stick up.
http://asphaltanchors.com/index.php/en/
watch the 'demo'

j

Edited by arch on Apr 17, 2013 - 05:46 PM.

i can definitely say that the weight of the trailer and sailbox will not keep a cat flat...

Ouch! the first Nacra just looks sad that way. As a note, he was lucky the rudders were fully "up". If they are down,(think about this if you flip the Cat on the lawn) you can break the castings/blades as it goes over.

(I learned that from Italians icon_lol )

Is Bartos = Wop? 😀

Hi guys and thanks for the input

It took me a while to answer, but wanted to have the sketches to clarify the idea. The drilled anchors could be one idea but since we dont have assigned locations for boats that could be difficult. I was also thinking of using 20 or 30 liter canisters or old car tyres as weight, but I think there would need be so many that they would be in the way most of the time.

Concrete weights could be one idea, at least on the home port. One could use an old tyre as mold for concrete weight and it would also serve as protective bumber, so it would not hurt that much when hitting the weight with bare feet. Inside would be a garden hose for the tie down rope, making it easy to replace the rope if needed. Another advantage would be that there would not be anything sticking (a loop, bolt etc.) out that you could hurt yourself or the cat. A foam on the topside would make it even safer. The tyreweight would also be a bit easier to move around than a concrete slab if such would prove necceseary.

We use a similar, but larger, system for anchors at our club, Lac Deschenes Sailing Club, Ottawa, Canada. I would recommend a hole through the middle, big enough to put a steel fence post through. That way you can put the post in the middle, pry the thing upright, roll it to where you want it, and let it down under control. Then take your post and go do the others. Otherwise these things are gonna be hard to move.

arch wrote: i can definitely say that the weight of the trailer and sailbox will not keep a cat flat...
http://www.flickr.com/photos/64069794@N03/8657509417/in/photostream/lightbox/
jEdited by arch on Apr 17, 2013 - 10:43 AM.

a cat on a trailer with a cat (mast up) will defiantly topple with enough wind.

mast down will survive much longer, but will still flip at some point (steel trailer is MUCH heavier than an aluminum one, so that is a big factor here)

If you build concrete weights, why not use some chain instead of line. IMHO line running through the concrete will burn through a hose and then rub your line apart very quickly (your boat will be rocking and sawing through the hose in every storm

Edchris177 wrote:

(I learned that from Italians icon_lol )

Is Bartos = Wop? 😀

Brilliant idea! Should be on the next space shuttle design team. I think, however, that an eye bolt with perhaps some big washers and nuts inserted into the wet concrete would be a great way to attach lines. Can't see how an eye bolt a few inches above the concreted tire would cause any damage to boat or feet. Would be easy to tie to. My boat is in my back yard (grass) on trailer. I have used some of the screw-type devices used to tie off dogs or secure RV awning. Had 50 MPH wind thru my yard and boat was still there. I put my bungees on to keep the boat on the trailer if expecting a storm or strong winds.

Edited by hyperope on Apr 26, 2013 - 09:21 AM.

BigWhoop wrote: I would recommend a hole through the middle, big enough to put a steel fence post through. That way you can put the post in the middle, pry the thing upright, roll it to where you want it, and let it down under control.

Thanks for the tip Big one, really made it easy to move the tyres around! I have two tyres now in use, third one is in garage drying up. I used old 16" 205-55 tyres from my car, filled with concrete and five masonry bricks broken into pieces, one tyre weighing 85 kg and second 90 kg. I put in an stainles steel eyebolt to attach the tiedowns.

thats a joke right?

I put my bungees on to keep the boat on the trailer if expecting a storm or strong winds.

to secure big tents they drive a long spike into the asphalt at an angle and tie a line to it. you could do the same and put something over it when the boat is not there. it would only need to stick above the asphalt a few inches.

Edited by marcs2 on May 20, 2013 - 01:09 PM.

My P18 (with steel trailer) didn't flip, but in some real heavy wind it did move out into the main road of my storage facility. My lot neighbors are all construction guys, so I consider myself fortunate that my mast is still straight. I think I like the idea of the cement tire with the large pipe in the middle for easy movement. I'm glad I read this topic!

Should this be of interest, I made a photo album about the tyre weights.

http://www.thebeachcats.com/pictures/?g2_itemId=102388