Day 1: I loaded the hold with crates of fish (blue) along the top row and barrels of wine (maroon) along the bottom. Day 2: A merchant in port traded me sacks of grain (yellow) for the fish -- I replaced the entire top row with grain. Day 3: Storm at sea! The grain got soaked and spoiled. I tossed it overboard and left that row empty (black). Day 4: We docked at the spice island. I filled the empty top row with saffron (orange) and also replaced the center cell of each remaining row with saffron, since the merchant there insisted on a 'column of gold' down the middle. Day 5: Arriving home, I unloaded everything except the saffron column -- the spice merchant at the home port wanted proof of origin, so I kept those three center cells orange and cleared the rest to black.