1. Afterdeck - a deck abaft of midships deck - any of various platforms built into a vessel fantail - an overhang consisting of the fan-shaped part of the deck extending aft of the sternpost of a ship

2. Hypernyms ("Afterdeck" is a kind of): deck (any of various platforms built into a vessel) Meronyms (parts of "Afterdeck"): fantail (an overhang consisting of the fan-shaped part of the deck extending aft of the sternpost of a ship)