Approach this area from south and you will find the shard just north of Ilayas Ruins platform. Collectible is nicely placed on top of a small, round, stone table, overlooking the large ship bellow. This is where it gets its name from. You are basically overlooking the Fuller’s Break (anchor icon) POI from this ledge. Amazing place to take a screenshot at.
Sand Kingdom Moons - Super Mario Odyssey Power Moons