Drydocking (Problem 3) - Advanced ship stability calculations

Using an example, this video discusses an example of calculations involved in drydocking (or similar situations) of a ship. The concept of "P" (upward thrust), virtual loss of GM, and residual displacement and GM is discussed. The use of hydrostatic tables is also shown. Diagrams aid in understanding of the topic. This is video 38 in the series of videos on ship stability. Students are advised to watch the previous videos (links below) before watching this video. 1) Ship Stability (Volume, Mass, and Density): https://www.youtube.com/watch?v=zD0ezi2wq1s&t=5s 2) Ship Stability (Pressure and Thrust): https://www.youtube.com/watch?v=P-ewJnMd0Fo&t=108s 3) Ship Stability (Displacement and Under-water volume): https://www.youtube.com/watch?v=e7Jt8MY93VQ&t=43s 4) Ship Stability (Deadweight, TPC, and Reserve Buoyancy): https://www.youtube.com/watch?v=5Kaz-n5edwg&t=271s 5) Ship Stability (Load lines, effect of density on draft and displacement): https://www.youtube.com/watch?v=-NyQorOxcTE&t=1467s 6) Ship Stability (Shift in the centre of gravity and KG calculation): https://youtu.be/-zHEJ7AYWiU 7) Ship Stability (Centre of Buoyancy): https://youtu.be/X5R7NLues5M 8) Transverse statical stability of ships: https://youtu.be/1jrjQTibIb8 9) Equilibrium of ships and Angle of Loll: https://youtu.be/MdwkZ1a5BNA 10) Calculate free surface correction on ships: https://youtu.be/9z5pYiWUBHA 11) Calculation and correction of ship’s list: https://youtu.be/tV28-XaGcmg 12) Extra questions on ship’s list calculation and correction: https://youtu.be/Ll8q8P4aXD4 13) Hydrostatic tables (Part 1): https://youtu.be/2lN4eHw3PDg 14) Hydrostatic tables (Part 2): https://youtu.be/N3exrv28xxk 15) Hydrostatic draft: https://youtu.be/SzfexEI_5G8 16) KM and BM calculation: https://www.youtube.com/watch?v=kDIBo8fDJ18 17) KM curves drawing and calculation: https://youtu.be/C-BEhptIrCw 18) Simpson’s First Rule: https://www.youtube.com/watch?v=rZ6A4lj8Kac 19) Simpson’s Second Rule: https://youtu.be/RYfBtWZQTKs 20) Combination of Simpson’s First and Second Rule: https://youtu.be/05yqp6WjKNw 21) Simpson’s Third Rule: https://youtu.be/-uO_wQXCpDg 22) Calculate volume using Simpson’s Rules: https://youtu.be/ZQfvTYB6NOI 23) Fresh water allowance: https://youtu.be/1ajzBCOgavs 24) Angle of Loll: https://youtu.be/3BbL4X-tABs 25) Calculate centroid using Simpson’s Rules: https://youtu.be/Q2RTNxDYsn4 26) Curve of Statical Stability: https://youtu.be/g5DdSSMYa-Q 27) Cross Curves of Statical Stability: https://youtu.be/SOkwlijrTOA 28) KN curves: https://youtu.be/ucEHQEsx_Kw 29) Trim Problems (Part 1): https://youtu.be/UXh-k1WCX8c 30) Trim Problems (Part 2): https://www.youtube.com/watch?v=Fj_F2m9tDnY&t=1s 31) Trim Problems (Part 3): https://youtu.be/SlrlnZvE-yo 32) Angle of loll correction: https://youtu.be/31_KZl-JgXQ 33) Increase in draft due to list: https://youtu.be/UCWaexmoc6Q 34) Combined list and trim: https://youtu.be/Jtq_ax-qerw 35) Combined list and trim: https://youtu.be/4SfMC1lAjMc 36) Drydocking Problem 1: https://youtu.be/hts2cHp6Qmw 37) Drydocking Problem 2: https://youtu.be/46FMCviT7vE