Cryptic Innit

1234567891011121314151617
Across
  1. 4. Noah's vessel documents the swarm (7)
  2. 5. Knight appears in extended journal (4)
  3. 8. Martin robs any ideas you might have (10)
  4. 10. Leader is a Portuguese citizen (9)
  5. 12. An income opts for payment (12)
  6. 13. Man in furious rage after deception (7)
  7. 15. The divide put you second in command (6)
  8. 16. A seasonal necessity from this shifty girl (5,6)
Down
  1. 1. An icy nutter remains without clarity (11)
  2. 2. To reluctantly accept the burden of drinking before the event (8)
  3. 3. Infamous lads confused by this infringement (4,3,1,4)
  4. 6. Sounds like the suffering was all one big bubbly act (9)
  5. 7. House detached from garden's boundary (4)
  6. 9. Traffic has me looking for a monumental gap (5)
  7. 11. Fox loses one precious stone before turning around (3)
  8. 14. Relative spooked by husband's passing (4)
  9. 17. Conscious of audible howling in the full moon (5)