OS OS Seamanship and Rigging 3

Question 1

What is the correct definition of 'freeboard' on a ship?

Accepted Answer

The distance from the waterline to the top of the gunwale or deck edge

Answer

Freeboard is the vertical distance from the waterline to the upper deck (freeboard deck) at the ship's side, indicating the reserve buoyancy of the vessel.

Question 2

What does the Plimsoll mark (load line) indicate on a vessel's hull?

Accepted Answer

The maximum depth to which the vessel may be loaded in various sea conditions

Answer

The Plimsoll mark (load line) indicates the maximum depths to which a vessel may be safely loaded in different water conditions and seasons, as required by international regulations.

Question 3

What is the term for the tendency of a ship to return to an upright position after being heeled?

Accepted Answer

Stability (positive metacentric height)

Answer

Stability, defined by a positive metacentric height (GM), is the ship's ability to return to an upright position after being inclined by external forces.

Question 4

When splicing a wire rope eye, what tool is used to separate the wire strands?

Accepted Answer

A wire rope spike or fid

Answer

A wire rope spike or fid is a hardened steel tool used to separate and open wire rope strands during splicing operations.

Question 5

What is a 'stopper' used for during mooring operations?

Accepted Answer

A short rope or chain used to temporarily hold a mooring line under tension while it is transferred to a bollard

Answer

A stopper is a short length of rope or chain applied to a taut mooring line to hold the load temporarily, freeing the line to be surged, veered, or transferred to a bollard.

OS - Ordinary Seaman Exam Practice Test

OS - Ordinary Seaman Exam Practice Test

OS OS Seamanship and Rigging 3