Catamaran plans, who have I forgotten ?

Unfortunately I had a serious stroke and am unable to do anything at the moment

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Marketplace - 1988 Crowther Beach Marine | Facebook

Marketplace - Simpson Cloud 10 Catamaran Hull (Must Sell) | Facebook

Can not rite

 

Guzzi, so sorry to hear you've had yet another stroke. I wish you luck with your recovery!

 

My regards to everyone from Guarapari,Brasil
I have a small catamaran with 4.80X2.3 meters made with fiberglass for mangroove tours. However, I want to make modifications to the hull to sail in the open sea on the coast. We have about 7500Km of coastline and the distance between small coastal towns is around 20KM. I would like to obtain the measurements or drawing of the hull of a 4.8X2.3 meters catamaran with small cabin for 2 people. Thank you in advance for your help...

 

Martins,

Better to post a new thread for this. Also please post a picture of the boat in question and tell us how many people you wish to carry on the ocean and in what conditions.

To respond to your other post, I don't know the Duo hull dimensions, but the hulls of Richard Wood's Skoota 18 and Ross Turner's Jarcat 6 are around 2 ft wide and 3 ft tall, see attached cross section.

The most important modification is to have the hulls decked over and sealed tight to keep water from getting in the hulls. The extra freeboard (hull height) mostly just keeps you dry. It's also important to have any cockpit area drain rapidly. Several beach catamarans have crossed the Atlantic. Beach cats do not have much freeboard, but they are fairly seaworthy because the hulls are sealed, the trampoline doesn't hold any water and the center of gravity (including passengers) is low. The people sailing them were of course wet and uncomfortable.

Depending on construction, you could also widen your boat up to, say, 10ft to make it more stable.

On Richard Woods' Skoota 18 (see PDF HERE) You can see the hulls are completely sealed, even to the cabin, and there are multiple watertight compartments. If the boat is swamped the water cannot go into the hulls and will instead drain out the large opening for the outboard. The small "cabin" also functions as a dodger. Note this boat is only 8ft wide for trailering, if it weren't for that I think Richard might have made it a couple of feet wider for stability, as he has done with his folding Skootas.

Edit: I'll also add this is not in any way an endorsement of using the boat you have, or the boats listed above in open water.

 

Tough situation Guzzis.
That Crowther I did some months of work on in the 90s, great family boat.
Jeff.