Cryptic crossword ACROSS

7 & 17Dn. Blows experienced

by merchantmen (5,5)

8. Cordial is embodied in a requirement (7)

9. The military man is vague (7)

10. To cause overcrowding right in temporary quarters (5)

12. People use them to figure out what trombonists keep to! (5,5)

15. She rises high in her entertaining job (3,7)

18. Populous regions to west, north and south (5)

19. Disturbed sleep I have (7)

21. Luck will produce wealth (7)

22. Some dials contain channels of communication (5)

DOWN

1. The technique needed for presenting “Showboat!” (10)

2. Pledges for those of little value on the board (5)

3 & 20Dn. It’s frightful to be afraid of certain people (8)

4. Stoutly protected and sent by post (6)

5. Finds no use for Diana’s bridge hand? (8)

6. Confine a friend? That’s how a criminal is treated (7)

11. The corridor is the route taken by the voyager (10)

13. Appears to be away from home, but is wary (5,3)

14. Different rewards found in the sideboard (7)

16. The man at the lathe is an artist (6)

17. See 7 Across

20. See 3 Down