B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
114/58.2
B63B 35/42 (2006.01) B63C 11/46 (2006.01)
Patent
CA 1279531
A B S T R A C T. A device relating to a semi-submersible craft having a deck structure (1) of several decks (9,10,11), which over a number of legs, at least one leg (2) in each corner, rests on two longitudinally extended pontoons (3,4). The craft is par- ticularly designed for diving or rescue operations at sea (DSV), having a work shaft (12) intended for raising or lower- ing, by means of cranes (13,15,16), equipment to be used at a diving operation and running vertically from the main deck down through the decks below, and two diving shafts (17,19) in the lower deck, intended for launching and taking aboard diving bells (18,20), at least one of which, the primary shaft (17), continues below the water surface, preferably in the main below the influence of waves, a pressure chamber (21) being de- vised on the lower deck in connection with the two diving shafts (17,19). The primary shaft (17) is installed in one leg (2) of the craft and the second diving shaft (19) is installed in such proximity to the primary shaft that the diving bells (18,20) for the two shafts (17,19) can be coupled to the same pressure chamber unit (21). The work shaft (12) is installed so close to one of the diving shafts (19) that the diving bell (20) from this shaft can be directly coupled to a work chamber, lowered through the work shaft (12) for dry trans- fer of divers. In connection with the work shaft (12) on the main deck there is devised a gantry crane or a travelling crane (13) which runs on tracks (14).
503511
Gowling Lafleur Henderson Llp
Kellogg Stanley G. Jr.
Stable Diving Platform A/s
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