Calm Buoy 2024-3 Spare
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Fabricator : Ateliers et chanties de Bretagne, Nantes, France.
Built in : 1979
Tanker size : 250.000 DWT
Hoses : 2 x 20 inch Submarine – 1 x 24 inch Floating
Mooring : 6 Chain stoppers for 3 ½ inch chain.
Buoy : It consists of a squared-body buoy, rotating around a load
carrying shaft, at the bottom of which is located a frame
(spider) to which the anchor chains will be connected
Design Criteria :
Operation for Moored Tanker
| Tanker size : | 250.000 DWT |
| Wave heights : | h/sign = 2.8 metres |
| h/max = 4.3 metres | |
| Period : | 12 seconds |
| Current : | 1.5 knots |
| Wind : | 40 knots |
Survival for SPM alone
| Wave heights : | h/sign = 6 metres |
| h/max = 9 metres | |
| Period : | 16 seconds |
| Current : | 1.6 knots |
| Wind : | 50 knots for 10 minutes |
Sea Conditions
| Mean water depth : | 31 metres |
| Maximum tide height : | 2.3 metres |
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