How well do you know your Harbour?

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Across
  1. 5. Pious fellow killed by polluted oyster in 1902?
  2. 7. Number of Tern species that breed in harbour?
  3. 10. The largest known Roman residence north of the Alps?
  4. 11. Approximate number of visitors to harbour each year (in millions)?
  5. 12. The fastest growing sport in the harbour?
  6. 13. Fashionable mobile harbour built and stored in Langstone in WW2?
  7. 15. Never cross this wind over tide?
  8. 16. Name of the Harbour Office hound?
  9. 18. The largest European wading bird found in the harbour?
  10. 21. Globally, the second most effective natural sequestrator of carbon?
  11. 22. What you should wear at all times when afloat?
  12. 24. Resolute King with damp feet at Bosham?
  13. 25. Number of Nature Reserves in harbour?
  14. 26. Maximum power-driven boat speed through, over or on the water?
  15. 30. Miles of navigable channels in harbour?
  16. 31. Angling for this protected fish from a boat is prohibited between 30th April and 1st November?
  17. 32. Moderate tides when the sun and moon are sun and moon are at right angles to each other?
  18. 33. When Terns meet, they remain?
  19. 34. Stunning Twelfth Century Church at Apuldram?
  20. 35. How many sailing clubs are there in the harbour?
  21. 37. Last example of working Oyster sailboat from Emsworth’s Oyster industry?
Down
  1. 1. Non-slip sailing safety knot?
  2. 2. The oldest purpose built marina in the UK?
  3. 3. Number of Harbour Seals in harbour?
  4. 4. The Conservancy's electric tour boat?
  5. 6. Location of Conservancy Tern rafts?
  6. 8. Chichester Harbour Radio channel?
  7. 9. Chichester is internationally important for this bird?
  8. 10. Number principal channels in harbour?
  9. 14. Number of international and national nature designations in harbour?
  10. 15. "Not really an island though is it, Sarge?"
  11. 17. Formerly called an AONB - now?
  12. 19. Large navigation mark seaward of The Bar?
  13. 20. Number of Grey Seals in harbour?
  14. 21. Cycle route from Chichester to East Head?
  15. 23. Primary cause of damage to saltmarsh?
  16. 25. The Harbourmaster's previous southern Manor?
  17. 27. Island birthplace of windsurfing - by law!
  18. 28. Name of shallow water to West of East Head?
  19. 29. The Conservancy's Education Centre that has helped 200,000 students?
  20. 36. The Conservancy's educational Tern mascot?