Ventilation for Voyaging

[TeddyDiver]

Originally Posted by Sailor Deb

We have a ketch. Where do you hang your hammock?

Either from mizzen mast to arch or on the boom.
BR Teddy

[deluxe68]

Originally Posted by El Pinguino

One point re the dorades ... best to trim them off the wind, ie typically facing aft , so that the venturi effect sucks air out of the cabin rather than trying to push air in.... far more efficient and less water likely to find its way below.

You need two things for good ventilation, supply air and return air. I would have the windward dorades facing into the wind and have the rest of them facing off the wind. Unless you also have a hatch or companionway open.

[barnakiel]

Hatches do not have to be closed down while underway. Sure when the weather is nasty but not in otherwise plain conditions.

But you are right on ventilation. If you think you will not have enough, think if you can modify the dorades so that you get max out of what you have already. Different sizes and shapes have vastly different efficiency.

Look if any of the hatches can be protected with a sprayhood and then left open or ajar - on many boats this is possible with the shower hatch.

On our very minute boat we can often leave the fore hatch (fore of the mast, on the cabin trunk) open as our inverted dinghy is stowed above it. It is dry there 99% of the time. This hatch opens aft.

b.