Tham khảo tài liệu 'ship stability for masters and mates 5 episode 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 374 Ship Stability for Masters and Mates Deadweight Moment Maximum kg ------ ------ ------ Deadweight _ 10 260 2000 m Example 1 Using the Simpli ed Stability Data shown in Diagram 3 Figure estimate the amount of cargo kg 3 m which can be loaded so that after completion of loading the ship does not have de cient stability. Prior to loading the cargo the following weights were already on board 2501 fuel oil kg m Free Surface Moment 1400 tm 501 fresh water kg m Free Surface Moment 500 tm 2000 t cargo kg m The light displacement is 1000 t and the loaded Summer displacement is 3500 t Item Weight Kg Deadweight Moment Light disp. 10001 Fuel oil 2501 m 125 tm Free surface 1400 tm Fresh water 501 m 250 tm Free surface 500 tm Cargo 2000 t m 8000 tm Present cond. Maximum balance 33001 200 t m 10 275 t m Point 2 Satisfactory 600 t m Summer displ. 3500 10 875tm Point 3 Satisfactory Since 10 875 tonnes metres is less than the maximum permissible deadweight moment at a displacement of 3500 tonnes the ship will not have de cient stability and may load 200 tonnes of cargo. Ans. Load 200 tonnes. Example 2 Using the Maximum Permissible Deadweight Moment diagram 3 Figure and the information given below nd the quantity of timber deck cargo Kg m which can be loaded allowing 15 per cent for water absorption during the voyage. Simplified stability information 375 DISPLACEMENT Tonnes DEADWEIGHT MOMENTS Tonnes Metres Fig. 376 Ship Stability for Masters and Mates Summer displacement 4000 tonnes Light Displacement 1000 tonnes. Weights already on board Fuel oil Fresh water 200 tonnes Kg m free surface moment 14001 m 40 tonnes Kg m free surface moment 600 tm Cargo 2000 tonnes Kg m Ballast 350 tonnes Kg m The following weights will be consumed during the voyage Fuel oil 150 tonnes Kg m. Free surface moment will be reduced by 8001 m Fresh water 30 tonnes Kg m. Free surface moment will be by 200 t m Departure Condition .
