Chapter 11- Stability Calculation
1. On a ship of W 5000t , GM 0.3m, 20t was shifted transversely by 5m. Find the list. Solution: W = 5000t, GM = 0.3m, Weight shifted (w)...
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Marine Teacher
Jun 5, 20202 min read
Which Test must be done before departure onboard ship? (updated June-20)
The following test must be done before departure onboard ship- 1. Controls are to be tested for about 1 or 2 hrs before sailing. If they...
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Marine Teacher
Jun 5, 202011 min read
Chapter 10 - Stability Calculation
1. On a ship of 5000 t displacement , a tank is partly full of DO of RD 0.88. If the moment of inertia of the tank about its centreline...
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Marine Teacher
Jun 4, 20201 min read
What is Smelling the ground?
Smelling the ground means :- This occurs when a ship is nearing an extremely shallow depth of water, such as a shoal. The ship is likely...
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Marine Teacher
Jun 4, 20201 min read
How do you know the data being displayed on my ECDIS is official?
ECDIS is able to determine the status of the chart data being displayed by inspecting the information contained within it. When any part...
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Marine Teacher
Jun 4, 20201 min read
What are ENC’s ?
The IMO Performance Standards for ECDIS defines an ENC as; “The Database, standardized s to content, structure, and format, issued for...
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Marine Teacher
Jun 4, 20201 min read
Why ecdis is a anti grounding tool why not anti collision?
1. Safety Frame/ Watch Vector is also known as ‘Anti Grounding Cone’ or ‘LookAhead Setting’. The setting is based on stopping distance...
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Marine Teacher
Jun 2, 20202 min read
Chapter 9 - Stability Calculation
1. A ship of 10000t displacement has a GM of 0.4m. Calculate the moment of statical stability when she is heeled by 5 degree. Solution:...
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Marine Teacher
Jun 2, 20206 min read
Chapter 8 - Stability Calculation
1. A box shaped vessel of displacement 1640t is 50m long 10m wide and 8m high . Find her KB in SW, if she is one an even keel and...
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