| Unless you are looking beyond a 10 year horizon for your HP there is not going to be anything beyond what is proven now.

I held in my hands, Wednesday, a 35# 5kv battery pack. Thats 1kwh/3.18kg. https://aeromarine-lsa.com/electrolite-update/

Now, those packs might be pricy. But I assume they will become cheap commodities sooner rather than later.

Given Ricks solar install is not that old??, and the trend line keeps dropping weight and adding power, I suggest that 10 years out it will be hard to choose hydrocarbons. But I am often wrong.

| There is nothing in electric storage technology that comes anywhere close to diesel for specific energy density even when burnt in a diesel.

Agreed.
But, if one factors in the weight and cost of said diesel engine, generators, and the ability to 'on the fly' recharge of solar, wind, and water generators, it can come close for those so inclined. And, imho, will only move to favour electric, I think.

As an aside, thanks Rick for that kraeutler.at link. I note both them and oceanvolt seem to suggest that 90kwh battery requirement is over twice what is generally recommended for a 50' cat. Did not Kleen Breeze have 24kwh? So 90kwh seems a bit excessive.

| As I stated earlier, I believe batteries are suitable for day sailing. I will add that they could be suitable for short cruising in safe waters at selected times. There are a good way to start out.
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| On the other hand the cost and weight of a generator and fuel required to motor for a day or so if needed would make sailing more enjoyable by avoiding the range anxiety opf relying on batteries and various ambient energy methods of charging them.

I have not sailed much, but I do not understand the range anxiety argument. It seems to me, mostly, a HP will sail. Given the overtall, oversized sails, the ability to move on weak winds is optimized.

The only real problem I see, as I have repeatedly said, is, if you find yourself heading to a location and your battery is low, spinning your electric drive to charge your batteries seems like a good option. But perhaps not.

Having looked at a few water generators it seems like the technology is simple. Pretty much any DC electric motor will spin backwards, and from there it is just an input for the battery controller.

Having the ability to drop the tender prop when your typical generation is not up to your comfort zone seems an ideal option. Even if you have to sail a bit slower.

| My diesel car will do 1000km on a tank of fuel but I usually fill up before the fuel warning light comes on tells me I have 70km left.
| Having a battery that enables 2 hours of sedate motoring or 1 hour of making way into a headwind continually gave me the same feeling I have in my car when the fuel warning light is on.

I defer to your experience, but your car does not have a sail. You can always sail the HP, if there is a breeze? The only time I see motoring as needed is certain locations, which, I think, should be predictable. But I am often wrong.