STCW Cargo Handling & Stability

Question 1

What is the primary purpose of a ship's stability booklet?

Accepted Answer

To provide loading conditions and stability data for safe operation

Answer

A ship's stability booklet contains approved loading conditions and stability data that must be consulted to ensure the vessel is loaded within safe limits.

Question 2

In ship stability, what does the abbreviation 'GM' represent?

Accepted Answer

Metacentric Height

Answer

GM stands for Metacentric Height, the distance between the center of gravity (G) and the metacenter (M), which is a key indicator of initial stability.

Question 3

What is the primary danger of the 'free surface effect' on a ship?

Accepted Answer

It reduces the effective metacentric height, decreasing stability

Answer

Free surface effect occurs when liquids in partially filled tanks shift with the ship's motion, effectively raising the center of gravity and reducing GM, thus decreasing stability.

Question 4

What is the purpose of a ship's load line (Plimsoll mark)?

Accepted Answer

To mark the maximum safe loading depth for various ocean zones and seasons

Answer

The load line or Plimsoll mark indicates the maximum depth to which a vessel may be safely loaded under different conditions of sea and season, preventing overloading.

Question 5

What does the term 'list' mean in the context of ship stability?

Accepted Answer

A permanent lateral inclination of the vessel due to off-center weight

Answer

A list is a permanent athwartship (sideways) inclination of a vessel caused by an off-center distribution of weight, unlike a loll which is caused by negative GM.

(STCW) Standards Certification and Watchkeeping for Seafarers Practice Test

(STCW) Standards Certification and Watchkeeping for Seafarers Practice Test

STCW Cargo Handling & Stability