NA & Ship Co Quiz II

1. Plating on bulk heads are generally fitted _______ for better graduation of thickness

Vertically in bulk heads

horizontally in bulk heads

vertically in transverse bulk head only

Horizontally in transverse bulk head only

2. Relation between CB, CP and CM is

C_P= C_B* C_M

C_M= C_P* C_B

C_M* C_P* C_B=1

C_B= C_P* C_M

3. Hull model relation is based on ______

Reynolds no of both hull and model are equal

Fraud’s no of both hull and model are equal

Reynolds and Fraud no of both hull and model are equal

None

4. Inorder to calculate the TPI of a vessel, for any given draft, it is necessary to divide the area of the waterplane by __________.

35.0-r.

120.0.

240.0.

420.0.

5. The ship's model estimates the __________.

Hull Frictional Resistance

Hull Wave Making Resistance

All the above

None of the above

6. Position of centre of buoyancy of vessel is at

Centroid of the full cargo space

Centroid of underwater hull

Centroid of all masses

Centroid of hull where buoyancy is maximum

7. Adding the FSCL to KG yields __________.

KM

GM

KGT

KGL

8. Subtracting FSCT from KGT yields __________.

BL

GMT

FSCT

KG

9. Many vessels are provided with flume tanks, which also have a dump tank located under the flume tanks. In the event the ship is damaged, you could dump the flume tanks into the dump tank which would __________. Uscg 1661 deck safety

reduce the free surface effect and raise the KG

not have any effect on free surface and raise the KG

reduce the free surface effect and lower the KG

not have any effect on free surface and lower the KG

10. That center around which a vessel trims is called the __________.

tipping center.

center of buoyancy.

center of gravity

turning center

Show Answers:

1-horizontally in bulk heads;
2-C_B= C_P* C_M;
3-Reynolds and Fraud no of both hull and model are equal ;
4-420.0;
5-All the above;
6-Centroid of underwater hull ;
7-KGL;
8-KG;
9-reduce the free surface effect and lower the KG;
10-tipping center.