- refrigeration, to reduce trips ashore for supplies (and to handle medications)
- dinghy stuff (davits and sponsons) to increase trips ashore
- solar - to reduce dock time, with beefed-up battery bank
- windlass - to reduce midnight terror when leaving a lee shore in a high onshore wind, and heart-attack avoidance pulling deep-sea weeds
and now . . . autohelm! Old school 3000 wheel pilot, which I am used to from sailing in the 80s. $500 from Dan, coming next week. No bells and whistles but it will hold a course while I freshen my orange juice or even sit up on the bow for a break from the freaking diesel banging. This is actually the final requirement for my perfect solo adventure vessel. I can't imagine crossing big water (like Lake Ontario, or the gulf stream) without it.
As for the old Volvo powerplant - finger-crossing should handle that issue adequately! From Cuba to Isla Mujeres? And down to Rio Dulce?