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  1. Dirk01
    At anchor I'll fold it out and probably add another up to 1kW to both sides onto the sea fences (upper end is a tube, not a wire). The roof will also carry some solar panels. But they need to be vented. Otherwise you would heat up the saloon. Directly glued on are therefore no option for me.
    Except the BBQ the cook top and oven will be based on electricity. So I need a lot of awell designed system, combining all voltage levels in a good sense. I think this is a good job for a Pi4 DIY project. BTW, my main DC level is 24VDC. 12VDC is only as a backup for things you cannot buy for 24VDC. I'll use for all systems the same about 300AH cells in a DIY spring loaded battery case.
    Regarding the props - the wil be retractable or better to say the will be hinged to bring them out of the water when at anchor. This is the easiest way to fight the flora and fauna.
    Maybe we can get into a discussion about that big step into the new normal...???
  2. Dirk01
    However, there might be an emergency with heavy winds and waves against you. So you need much more power until you cleared the situation and pulled your main engines up the mast and furled your genoa or set a storm fock. One hour should more than enough time for the mentioned clearing of the situation. In combination with 6kW genset diesel all the weights end up 100kg above a conventional system (you'll need less diesel capacity due to higher efficiency of the whole system). However, the approach to sail and how you handle the energy is the same as to change from ICE car to a BEV (I know it because I did it). Solar has to be considered too. My plan is to have about 1.4kW on a solar arch at the sterns. But for stronger winds or heavier sea states it can be partially folded back to reduce the windage and the mechanical loads. .
  3. Dirk01
    Hi aybabtme,

    I'm going to buy a MAX 45 (the same Matt just build as DIY in Chesapeake bay but 3 ft longer).
    I calculated a LOT about power needs (motor as well as battery bank).
    Having a light catamaran of about less than 8 t (and not a condomaran like a Lagoon) means that having just a whiff of a wind means little movement. Hence only 1 or 2 kW of power (one motor) is good for 4 kts. 305AH@48VDC is a max. net of 12kWh is good enough to find the next blow and recuparation to fill up the banks.

About Me

  • About aybabtme
    Vessel Make/ model
    Seawind 1000 XL2
    Vessel Name
    Software Engineer
    Space exploration, software, science.
    I like to live interesting experiences!
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  • Last Activity: Yesterday 05:45
  • Join Date: 21-10-2015
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