2/03/2021 MMD ORAL QUESTIONS ANSWER FUNCTION 3

2/03/2021

MEO CLASS 4

INTERNAL- SHIRISH

Function 3

 

FREEBOARD AND ITS PURPOSE

 

 Distance measured from water line to top of the deck.

 Purpose- 

 Its the protection and closure opening such as hatchway, door ways, ventilation, air pipes, scuppers, and prevent the water accumulation. 

 

Chamber

 

 The transverse cure of the deck from center line to side shells 

 To drive the water outside of the deck ..

Tumble home 

In some ship's side shells are slightly inverted facing to centre line this is called tumble home.

Sheer 

 The curvature of the deck from mid ship to forward and aft . 

Free surface effect

click on this link Free surface effect

Stiff ship 

Its the condition of ship's metacentric height and righting level is large. At any angle resistance to rolling.

Tender ship

 

 When metacentric and righting lever both distance is small  At any angle ship will roll.

Pounding

 When a ship is sailing in heavy weather bow rises above the water because of waves, bow will completely out from water and when it will come back  and hit the water with heavy impact its called pounding.

ISM CODE 

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ISPS CODE 

click the link ISPS CODE