Welcome, Bernard!
Meaning, how would you plan or execute a day's cruising differently when hybrid motive power and/or battery bank energy reserve are added to a standard boat's capabilities?
Most of the sales/promo materials and videos make it clear that hybrid motive power's electric mode is intended as an adjunct -- to avoid idling the motors at low speeds in marinas, no-wake zones, etc., or to enable fuel-free jaunts close to home -- rather than to replace the diesels as prime movers. In your experience, is that accurate?
Likewise there's talk about spending time on the hook without needing a generator or running the diesels--not just for fridge/hob/lights, but even climate control. Are you able to confirm or expand?
-Rick
I will throw in a comment or two here...
1) Regarding your observation that hybrid is an adjunct. I agree with this assessment 110%. It's not very practical on long journeys on the sea, as you lose energy using diesel to charge electric. Just physics. But, I've been known to do it on beautiful calm days when I'm on a long run and not in a rush. The reason? For 2-3 hour blocks of cruising silently. Sometimes, it's just worth the slowness and inefficiency for me. Greenline is now offering vessels with 100% electric (i.e. no diesel engine). This could be great for some (i.e. dedicated inland and canal cruisers). For me, I wouldn't have it. While we spend a lot of time inland and in canals, I don't want to hesitate to go to islands in the Baltic or this coming summer, Sicily and Malta...if we ever manage to get this Corona thing behind us. Diesel is necessary if the going gets rough.
2) regarding utilizing hybrid on the hook... To me, this is as, or possibly even more, attractive as being able to navigate several hours silently. It's amazingly convenient to have 230v (i.e. standard house current for us) available all the times. The solar panels are photo-voltaic and provide amps even on cloudy days, though not as much. With some careful thought to power management, we can go 3-4 days without shore power or running the diesel to re-charge. We rarely anchor in one spot for more than 2 days at a time, so we have all the power we need from the solar/battery/inverter setup. Perhaps more common for us are port situations on rivers or canals where we want to stay a few nights, but no power is available. Not long ago, we were in Berlin and they have beautiful, FREE, walls to tie to in parks along the river there. No facilities, power or water, however. Nevertheless, we stayed 4 nights in Berlin and had 230v house power all the time from our hybrid system. The biggest challenge was that it was very hot. 90's F. While we were ashore touring most of the time, our cat remained on board and therefore we had to run the a/c some. While it can handle it, this puts quite a draw on the hybrid system. Nevertheless, with the a/c on occasionally during peak heat in the afternoon, we were still able to manage 4 days and have enough 230v power to also run the 12v battery charger, 230v refrigerator, induction stove, microwave, Nespresso machine, towel warmer, 230v stereo system, computer charging and phone charging. We also have an electric mattress pad, but it was certainly not needed during that summer in Berlin!