When I left mexico
I had 50 liters of water. When I got to the cook islands
(first landfall) I had 30 liters of water. When I left vanuatu
, I had 40 liters of water, when I got to philippines
, I had 50 liters of water. I don't have a watermaker.
Did anyone mention clipping a funnel with a hose to your mainsail
at the lowest point? Works best when reefed. You can get a liter of water per second (and I'm on a 27ft boat) during squalls. If you are crossing the equator you are pretty much guaranteed to get hundreds of liters of water this way. A regular size hose might not be large enough diameter, think at least 1.5 inch for a 41ft cat.
Some people try to avoid squalls, but I try to hit them to get water and more wind
which moves the boat faster. Also turning when in the squall to stay in it longer. Take your showers during squalls.
Next, upgrade your solar panels
to have a small gutter around them as well as collecting all the rain that runs down the mast
(quite a lot) to work all the time, even at anchor
with minimal work and virtually no disadvantages.
All of the world precipitation trends are pretty well known (see my climatology plugin for opencpn
which includes precipitation maps of the world for each month) You may also plan your sailing routes to include areas with rainfall.
I also have a small solar still which makes just enough water for drinking if I'm on a long stretch without water.. I only used this as a test for a few days until I reached the area of squalls, but in this way, I do not rely on precipitation.
If you are island hopping in the dry season, there is certainly free water available in most places, you can take 20 liter containers. I have an excellent sailing rig I hand sewed for my kayak
which allows me to quickly reach local water sources.
Don't load your boat down with 700 liters of water, it won't sail good. 50 liters per person maximum.