While its warm or hot out a cold shower is fine, and since you are sailing south, when north of 20 degrees latitude and its summer, it'll be no problem. When u want a hot shower there are marinas
and motels along the way.
I have had inboard and outboards. Outboards are easier to work on or get worked on except at sea. I spent a relatively pleasant afternoon replacing the fuel filters on my inboard while in St Kitts
. It would have been hot work and I probably would have lost
some small parts
in the drink if it had been an outboard.
Busted the shear pin on an outboard in Puerto Rico
. I just carried it ashore to a motor
shop and had it fixed.