CNC Plans not Included

Here she is at 31 foot beam ... The sails luff shown is - 65 feet, the foot is - 22 foot.
Total area - per sail - not counting mast is around 104 sq meters. The booms would clear with a foot or two to spare, probably want to make them shorter still, or not. ))

 

Now, that net aft of the transom can become a swim platform at anchor?

 

Theres a neat way of doing this- all the dive boat catamarans have them here... ill show how when i get a chance... it raises and lowers and could take the tender with it...

 

... you're not talking about something like this are you?

 

Looks nice but heavy (right at the back of the hull), expensive, and lots of maintenance.
I was hoping for something that floats with a couple of people but sinks under the weight of the tender.

 

Yeah I was thinking the same about weight. Here is one on a Leapord that looks like it has a lighter mechanism -

 

Here is an image of a Lagoon platform. This concept might actually not be that heavy. A couple of Carbon Fiber beams would pivot down. You could use a cable to keep the platform level. I like it!

 

No its very simple and doesnt have to have hydraulic power but it can be done that way if you dont like the hassle of pulleys. It slides up and down on rails.

These pics show the general idea, obviously you would need not need it to be this big, this is in the up position;


and this is in the down position;

 

here another one showing more of the slide mechanism- just about every new commercial boat here uses this same general idea;
For your boat the slide pillars also could double as roof supports for the aft part of the roof.

 

like a boat lift! Very simple!
where would the rails attach on a catamaran? I guess they would have to abut where transom meets the hulls and then put some flare around them.

edit:

 

Jorge, does the last one have its own steps built in? lower the swim pad and voila the stairs are in place.

 

It looks like it has more of a ladder ... the platform looks like it would work well for scuba but it's not really aesthetically appealing to me. I think there has to be a nicer way to do this without getting heavy.

edit- and the first pic is how my ladder works on my seawall and it's not very smooth up and down, nor is it light!

 

this one looks much lighter and vertical lift with the weight offset will always be difficult to make smooth

 

For sure, I pity the guy who spent all the time on building that thing! Everyone in the keys almost has some type of boat hoist. I'm thinking a regular davit setup with the spreader bar but instead of connecting to boat you connect to the platform. Then on either side on sliding slots you have the pivoting stairs that would open automatically like a step ladder ... if even necessary, something like this

 

Shown in up position, offset from the platform so you can see what I mean. However you could also make that platform full width using the same setup and use a bracket of sorts to fix it in the down position, then just use regular transom steps to get the gear on the platform