1: No hefty role at sea for ship-launcher (5,2,4)
2: Frank turned brown sitting on mountains (7)
3: Encourage horse led with direction. (3)
4: A chair may be material (5)
5: Tepid on Germany's military advocate (9)
6: Disturbed intruder, pet disturbed. (11)
7: Sort of collection to compose print (7)
8: Mr Stewart on the staff (3)
12: Thus might florin study a silly timekeeper (3-3,5)
13: Steer TS into alternative routes (4,7)
15: Fashionable fragrance, fundamentally (2,7)
16: Sailing on a gold boat (7)
17: Taxi C.E.O. ordered for the not-so-ordinary (7)
19: Shower time, Bonzo? Spring, I hear (5)
21: Fix the oil platform ... (3)