So another one of the projects I need to work through is the old water tanks on Felix. I want to ask how much water you guys carry because both my tanks need replacing. For now we just do overnight and day trips but in a couple of years I would love to use long service leave to cruise from Sydney to the Whitsundays and so I am kind of planning upgrades around that.

The port hull has the galley which has 2 taps: A fresh water tap supplied by a 200L tank and also a salt water tap. I was told they washed dishes with salt water and then rinsed with fresh water. I've never bothered with the salt water but I guess its a good idea when needing to save water.

The starboard hull has the head which has a small hand basin supplied by a 30L tank.

The old tanks were made of just sealed sections of hull coated in waterproof membrane. The membrane was failing and small bits of blue plastic were coming through the faucets when I took on Felix a year ago. Each tank had a small access hatch which was too small to get in and clean/repair the tanks so I have cut them open, and drained them.

I would prefer to fit hard plastic tanks inside the existing space (I cant find replacement bladders in a suitable shape). It will cost more than restoring the old ones, but installation will be quicker and make it possible to give them a thorough clean out once per year (is that about the right timing?) and the plastic tanks should last as long as the boat does.

Two plastic tanks would give me 64L of water in each hull. Which at 128L total seems like it be would touch-and-go- for coastal cruising with 2 adults and 1-2 kids (in this scenario we bring our own soft drinks, beer, bottled water etc with us when we go somewhere). Being a small boat we just use those portable 25L shower bags to heat water on deck. So we can control how much is used in showering.

Ive never sailed outside of Sydney so I have no idea how often I would be able to refill the tanks once I head north......

WIll it be enough or should I try to squeeze more in?

Thoughts appreciated!!