Facing forwards, Robin would be able to see, on his right, a series of islands. The largest island, which the ship had embarked from, was behind him, with four smaller islands in an arc in front of the ship. The southernmost island, which Robin would just be able to make out if he had very good vision, would be the smallest.
On Robin's left was a separate landmass, off in the distance. At this distance, the most obvious feature of this landmass would be the enormous mountain range, further south than the final Kaisiri island.