Pioneer 713

[Bernie]

19a An extreme foodie (7) ????T?N
20d Nautical Term (5) ??R??
27a Other self (5,3) ?L?E? E??
6d. Sanctuary (5) ??R??
12a An Ancient Greek P?L???e
Many thanks for help. Finding it difficult this month

[Celticv11]

27 alter ego

[Celticv11]

Glutton? 19

[shooty]

20d Berth

[Celticv11]

6 d possibly aerie. Can think of several nautical terms that would fit, any more letters?

[shooty]

20d Berth ?

[Bernie]

If Glutton is right for 19a Nautical term begins with 'U'

[Bernie]

I think Unrig mightbe right for Nautical term. It fits!!