43d writers account about a frogman heading for the surface? G---/A---L
55a. Mark nicks muscle vehicle from station (5,3)
-----/-a-
37a (8) s---o-e- I think its sea dogged but can't parse it
Any help is greatly appreciated
46. ac. Face headless man drinking port (8). Have
E?T?R?O? which looks like 'exterior' if 'face' is the definition part of the clue, but cannot see the wordplay.