Looking for a Cat Box - trailer storage for sails etc

New, they're kinda expensive these days....

https://www.sailboxes.com/standard-sailbox/

https://cmmarine.com/products/c-m-dock-box-121-x-16-x-18-w-ss-vents-gas-shocks

https://www.amazon(dot)com/dp/B0053HQOT6/ref=sspa_dk_hqp_detail_aax_0?psc=1&sp_csd=d2lkZ2V0TmFtZT1zcF9ocXBfc2hhcmVk  

the amazon link goes to 'kindle' for some reason, so replace the (dot)

Another idea would be to purchase a HDPE culvert pipe like this one: https://www.tractorsupply.com/tsc/product/neat-distributing-hdpe-(plastic)-culvert-24-in-x-96-ft-hdpe-2496-1704728

You could either make your own end caps or purchase these: https://www.menards.com/main/plumbing/pipe-fittings/culvert-pipe-accessories/corrugated-dual-wall-culvert-end-cap/ec24-gf/p-1444451519957-c-9567.htm (kinda expensive too)

I'd make some end-caps from 6" diameter cored pvc pipe, cut a section to just over 24" in length, saw down one side, put in oven until very pliable (250-280. deg F), then flatten between two boards and clamp-down until cool. Then cut to size. You might be able to actually form the pliable pvc so that it forms around the end of the pipe so it acts more as a removable cap, but that might be more tricky due to all the compound-curvature that you'd have to induce into a more-or-less flat sheet material.

The other option would be to use 1/2" plywood cut to a ~24" circle, then laminate with fiberglass with fiberglass-formed lips to form a cap-like structure.

I just searched for 'hobie cat box' and saw this: https://www.hobie.com/forums/viewtopic.php?t=9329&start=15

Almost exactly what I was describing above.

Posted by: @ebaldwin18sq

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Does anyone still manufacture these?

Kenny at Sailboxes.com builds two versions standard and deluxe trailer boxes.

In Ocean Springs, Mississippi.

https://www.sailboxes.com/

If you are handy there have been a lot of discussions over the years on building your own DIY box.

https://archive.thebeachcats.com/pictures/picture.php?/24286/category/998

https://archive.thebeachcats.com/pictures/index.php?/category/998

thanks for all the help everyone!!!!!!

I made my own. Two sheets of plywood and 11 2x2s. The box is 8' x 2' x 18".

It's probably pretty heavy compared to a fiberglass one, but it was cheep and it's held up surprisingly well even with the rain.

Posted by: @danielt1263

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I made my own. Two sheets of plywood and 11 2x2s. The box is 8' x 2' x 18".

It's probably pretty heavy compared to a fiberglass one, but it was cheep and it's held up surprisingly well even with the rain.

Details? Pictures? 

I made this one more than 40 years ago.  3/8 plywood & 2x2s, screwed & caulked, some of it WEST epoxied.  I've remodeled it several times.  The tube was free but covered with rust stains, took a gallon of muriatic acid to clean.  The ends are 3 pieces of plywood cut inside to provide ventilation.  

@cat-scratch Hmm... I don't have pictures off hand, but I can describe how I made it. It was pretty simple.

Materials: 2 sheets of 3/16" plywood, 11 2x2 (pressure treated), box of 1" to 1.5" long fence screws.

I cut one sheet of plywood in half (2'x8') for the top and bottom, and the other in thirds (18"x8') for the sides and ends.

On the sides, I screwed a 2x2 to the bottom-inside, and another 2x2, 1.5 inches down from the top; I cut 2 plywood thicknesses + 1.5 inches off these 2x2s in order to accommodate the ends later. Then cut a piece of 2x2 that went down one side. Basically the 2x2s made a "C" shape.

Like this:

(Note that the top 2x2 is inset 1 1/2". The left side 2x2 is inset 3/16". The right side is inset 1 11/16". The bottom is flush.) 

I did the same for the end caps which I cut to 2' minus 2 time plywood thickness.

I then put the four sides together, box-shaped and upside down so the flush 2x2s were on top. I screwed them together and screwed one of the 2'x8' sheets of plywood on the top (that's the bottom of the box).

Then I turned the whole thing over and rested 2x2s on top of the top 2x2s, cutting to fit. They were flush with the top of the box that way. I spot screwed them to keep them in place.

Then I put the other 2'x8' sheet on top and screwed it to the 2x2s that I spot screwed and removed the spot screws. 

I drilled some holes in the bottom of the box and attached it to the trailer with U bolts.

The next time I go out, I'll take pictures.

My go-to remains sewer pipe.  Be aware, though, that when you get into the larger sizes, the wall thickness goes up enough to make it very heavy.