2 down. Belief about topic. 7 letters.
3 down. Stone – tire. 4 letters.
4 down. Scottish girl? 6 letters.
5 down. Sailing. 8 letters.
6 down. Home in the far, far north. 5 letters.
7 down. Eritrea and Djibouti region. 4 letters, 2 letters and 6 letters.
8 down. Sotto voce actor’s remark. 5 letters and 7 letters.
13 down. Scaremonger(ing) – mail star (anag). 8 letters.
16 down. Gannet. 7 letters.
17 down. Kinds. 6 letters.
19 down. Concentrate. 5 letters.
21 down. Very big or wide. 4 letters.