Ship Stability - Load Line Marks and Draft Calculation (Tricky Question)!!

This question involves concepts of ship stability, load line marks, fresh water allowance, densities to calculate sinkage and resulting drafts.
For this question, assume your vessel is in Salt Water and will be loading in Fresh water. As density decreases (from salt water to fresh water), draft will increase by FWA.
Students are advised to watch the previous videos (links below) before watching this video.
Ship Stability
1) Ship Stability (Volume, Mass, and Density): • Ship stability basics ...
2) Ship Stability (Pressure and Thrust): • Ship Stability Basics ...
3) Ship Stability (Displacement and Under-water volume): • Ship Stability - Displ...
4) Ship Stability (Deadweight, TPC, and Reserve Buoyancy): • Ship Stability - Dead...
5) Ship Stability (Load lines, effect of density on draft and displacement): • Ship Stability - Load ...
6) Ship Stability (Shift in the centre of gravity and KG calculation): • Ship Stability - Shif...
7) Ship Stability (Centre of Buoyancy): • Ship Stability - Cente...
8) Transverse statical stability of ships: • Transverse statical st...
9) Equilibrium of ships and Angle of Loll: • Ship Stability - Equil...
10) Calculate free surface correction on ships: • Ship Stability - Calcu...
11) Calculation and correction of ship’s list: • Ship Stability - Calcu...
12) Extra questions on ship’s list calculation and correction: • Ship Stability - Extra...
13) Hydrostatic tables (Part 1): • Ship stability - The u...
14) Hydrostatic tables (Part 2): • Ship Stability - The ...
15) Hydrostatic draft: • Ship Stability - Calcu...
16) KM and BM calculation: • Ship stability for Mat...
17) KM curves drawing and calculation: • Ship Stability for Mat...
18) Simpson’s First Rule: • Advanced Ship Stabilit...
19) Simpson’s Second Rule: • Ship Stability - Simps...
20) Combination of Simpson’s First and Second Rule: • Ship Stability - Combi...
21) Simpson’s Third Rule: • Ship Stability - Use o...
22) Calculate volume using Simpson’s Rules: • Using Simpson's Rules ...
23) Fresh water allowance: • Fresh water allowance ...
24) Angle of Loll: • Angle of Loll calculat...
25) Calculate centroid using Simpson’s Rules: • Using Simpson's Rules ...
26) Curve of Statical Stability: • Curve of Statical Stab...
27) Cross Curves of Statical Stability: • Cross Curves of Static...
28) KN curves: • Using KN Curves to con...
29) Trim Problems (Part 1): • Trim Problems (Part 1)...
30) Trim Problems (Part 2): • Trim Problems (Part 2)...
31) Trim Problems (Part 3): • Trim Calculations - P...
32) Angle of loll correction: • Correcting an Angle of...
33) Increase in draft due to list: • Increase in draft due ...
34) Combined list and trim: • Combined list and trim...
35) Combined list and trim: • Combined List and Trim...
36) Drydocking Problem 1: • Drydocking (Problem 1)...
37) Drydocking Problem 2: • Drydocking (Problem 2)...
38) Drydocking Problem 3: • Drydocking (Problem 3)...
39) Bilging Amidships (Theory and Numerical): • Bilging Amidships - Sh...
40) Bilging amidships (Example 2): • Bilging Amidships - Sh...
41) Permeability (Theory and numerical): • Permeability of bilged...
42) Permeability (Example 2): • Permeability of bilged...
43) Vessel’s heel due to turning: • Calculate vessel's hee...
44) Application of moment of inertia: • Application of moment ...
45) Stability of passenger ships in damaged condition: • Stability of passenger...
46) Severe wind and rolling period diagram: • Severe Wind and Rollin...
47) GM by rolling period tests: • Metacentric Height by ...
48) Calculate GM by means of rolling period tests: • Calculate GM by means ...
49) Passenger vessel requirement for turning: • Passenger vessel requi...
50) Inclining experiment: • Inclining Experiment -...
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also watch:
51) Bilging of end or intermediate compartment: • Bilging of end or inte...
52) Shearing forces and bending moments: • Shearing Forces and Be...
53) Change of trim due to change in density: • How to calculate chang...

[@kaptanhaddok4653]

I have a question that when we are in vessel we all can obtain the FWA value of the vessel by simply looking to the ship particular so the formula of fwa: displacement/4TPC is usually for students in maritime faculty ,ısn't it?