How to use the ship’s hydrometer to check the dock water density??

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This video explains the process of using a hydrometer to check the dock water density of a ship. It also includes a video where the practice use of a hydrometer is demonstrated.
Contents of this video will benefit mariners preparing for exams (written and oral examinations).
Mariners will also benefit by watching the following videos:
Ship Construction
Stiffening of ship’s plates:    • Stiffening of ship’s plates - Ship Co...  
Forces experienced by a ship:    • Forces experienced by a ship - Sheari...  
Torsion of the hull and local stresses:    • Torsion of the hull and local stresse...  
Stress distribution and deflection simulation:    • Stress Distribution and deflection si...  
Longitudinal and transverse framing systems:    • Longitudinal and Transverse Framing S...  
Principle dimensions of a vessel:    • Are you familiar with the principle d...  
Difference between GRT and NRT:    • Watch this video to finally understan...  
Pumping and piping arrangements on a vessel:    • Don't let the Pumping and Piping arra...  
Form coefficients:    • What are Form Coefficients and why is...  
Information derived from a ship’s lines plan:    • What information can you derive from ...  
Ship’s plan:    • What kind of information can you obta...  
How a ship is built:    • Watch this video to know the story be...  
Design limitations of bulk carrier:    • Why design limitations of Bulk Carrie...  
How can a ship lose its class:    • How can a ship lose its class (Classi...  
Types of survey conducted on ships:    • What are the types of survey conducte...  
How is the bulbous bow of a ship constructed?    • How is the Bulbous Bow of a ship cons...  
Ship Stability
1) Ship Stability (Volume, Mass, and Density):    • Ship stability basics - volume, mass,...  
2) Ship Stability (Pressure and Thrust):    • Ship Stability Basics  - Pressure and...  
3) Ship Stability (Displacement and Under-water volume):    • Ship Stability - Displacement, under ...  
4) Ship Stability (Deadweight, TPC, and Reserve Buoyancy):    • Ship Stability -  Deadweight, TPC, an...  
5) Ship Stability (Load lines, effect of density on draft and displacement):    • Ship Stability - Load lines, effect o...  
6) Ship Stability (Shift in the centre of gravity and KG calculation):    • Ship Stability  - Shift in the centre...  
7) Ship Stability (Centre of Buoyancy):    • Ship Stability - Center of Buoyancy (...  
8) Transverse statical stability of ships:    • Transverse statical stability of ship...  
9) Equilibrium of ships and Angle of Loll:    • Ship Stability - Equilibrium of ships...  
10) Calculate free surface correction on ships:    • Ship Stability - Calculation of free ...  
11) Calculation and correction of ship’s list:    • Ship Stability - Calculation and corr...  
12) Extra questions on ship’s list calculation and correction:    • Ship Stability - Extra questions on l...  
13) Hydrostatic tables (Part 1):    • Ship stability - The use of hydrostat...  
14) Hydrostatic tables (Part 2):    • Ship Stability  - The use of hydrosta...  
15) Hydrostatic draft:    • Ship Stability - Calculation of Hydro...  
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17) KM curves drawing and calculation:    • Ship Stability for Mates and Masters ...  
18) Simpson’s First Rule:    • Advanced Ship Stability - Simpson's F...  
19) Simpson’s Second Rule:    • Ship Stability - Simpson's Second Rule  
20) Combination of Simpson’s First and Second Rule:    • Ship Stability - Combining Simpson's ...  
21) Simpson’s Third Rule:    • Ship Stability - Use of Simpson's Thi...  
22) Calculate volume using Simpson’s Rules:    • Using Simpson's Rules to calculate vo...  
23) Fresh water allowance:    • Fresh water allowance (FWA) - What is...  
24) Angle of Loll:    • Angle of Loll calculations  
25) Calculate centroid using Simpson’s Rules:    • Using Simpson's Rules to calculate th...  
26) Curve of Statical Stability:    • Curve of Statical Stability  - Theory...  
27) Cross Curves of Statical Stability:    • Cross Curves of Statical Stability - ...  
28) KN curves:    • Using KN Curves to construct a GZ cur...  
29) Trim Problems (Part 1):    • Trim Problems (Part 1) - Advanced Shi...  

Bridge Equipment:
Working principle of echo sounder:    • Echo sounder on ships - Principle of ...  
Displays of echo sounder:    • Echo sounders on ships - Display of d...  
Operational controls of the echo sounder:    • Echo sounder on ships - Operational c...  
Transducers of echo sounder:    • Echo sounders - Transducers (Magnetos...  
Errors and limitations of echo sounder:    • Echo sounder - Errors & Limitations  
Technical checks and Performance standards:    • Echo sounder - Technical maintenance ...  

Ship Handling:
Manoeuvring when approaching a pilot station:    • Manoeuvring when approaching a pilot ...  
Speed when picking up a pilot:    • Speed when picking and disembarking a...  
Manoeuvring in shallow waters:    • Manoeuvring in shallow water - Ship H...  
Squat and the factors governing it:    • What is Squat and the factors that go...  
Practical calculation of a ship’s squat:    • Practical Calculation of a ship's Squ...  
Narrow channel effects on ship handling:    • Narrow Channel Effects on Ship Handling  
Interaction between ships in overtaking and head-on situation:    • Interaction between passing ships in ...  
Interaction between tug and ship:    • Interaction betweenTugs and Ships  

Cargo Work:
Cargo work numerical (example 1):    • Cargo Work Numerical - Example 1  
Cargo work numerical (example 2):    • Cargo Work Numerical  - Example 2