- 68 



13. 



14&15. 

 1(1 

 17. 

 18. 



19. 



20. 



21. 

 22. 



Ditto. 



Steam launch for surveying purposes. 



Steam launch for surveying purposes. 



• Steamers for surveying purposes. 



24. 

 25. 



26. 



27. 

 28. 

 29. 



30&31. 

 32. 



33&34. 

 35. 

 36. 

 37. 

 38. 

 39. 



40&41. 



42. 

 43. 

 44. 

 45. 

 46. 

 47. 



48. 

 49. 

 50. 



51. 

 52. 



Steamer for inspecting and loading the gasbuoys. 



Tugs. 



Barges for dredged material. 

 Barge, dwellinghousse and office for surveying 

 purposes. 



Barges for dredged material. 



Dredgers. 



Dredger and Kefouleur ( Mud-pump ). 



Hlxcavater and Refouleur. 



Barge with boring apparatus and ditto, with 



steam pump. 

 Floating crane and Refouleur ( Mud-pump ). 

 I )redger. 



