Puzzling fieldwork

Sailor Cat needs to bring a wolf, a goat, and a cabbage across the river.
The boat is tiny and can only carry one passenger at a time.
If he leaves the wolf and the goat alone together, the wolf will eat the goat.
If he leaves the goat and the cabbage alone together, the goat will eat the cabbage.
How can he bring all three safely across the river?

This is a fun little puzzle, but its analogous logistical fieldwork quandary we are dealing with. We have 12 stations on 4 islands. Each station has a dead battery and we need to replace the dead batteries with recharged batteries. In order to charge a battery, we need to leave it for 12+ hours at a hotel/port and can only charge 1 battery at a time. Each station has a different travel time from each port. How do we design 4 separate circuit diagrams, one per island, to visit each station and swap its dead battery for a charged battery?

Rob and Nova outside the plane after landing in Waingapu (Sumba)

Rob and Elen (our MVP!) in the Neo Hotel lobby

Driving around Sumba

Chocolate avacado drink :D

Riding side-sadle on a motorbike. Its normal.

Crispy banana.

http://www.mathcats.com/explore/river/crossing.html