AUVs (5th year, 2022 Drones section) continue in the 2023 drones section as Ocean-Faring Drones, which the publisher defines as USVs and AUVs (2024-426); one step broader, absorbing sibling Autonomous Ships (merger precedent 2022-350). Oceanic Explorers is small exploratory robots (pass-2 ruling on 2023-404).
A trend is graded on whether the publisher keeps it, never as a hit or a miss (D6, D33).