25-50 from scs1 100

According to Archimedes Principle, a ship floats because:

• It is lighter than water

• It displaces a volume of water that weighs less than its own weight

• It displaces a volume of water equal to its own weight

• Its deadweight tonnage is greater than that of the water it displaces

_____________ refers to the ability of a vessel to return to the upright when inclined by an external force

• Reserve buoyancy

• GM

• GZ

• Stability

An angle of _________ occurs when the center of gravity is too high up in a vessel, as opposed to an uneven distribution of weights.

• Heel

• List

• Inclination

• Loll

At small angles of heel, vertical lines drawn through the center of buoyancy intersect at a point on the centerline called the:

• Center of buoyancy

• Metacenter

• Center of gravity

• Geometric center or centroid

A vessel floating with 1 meter, 40 centimeters forward draft mark just submerged, has a draft forward of:

• 1.5m

• 1.4m

• 1.3m

• 1.6m

A vessel that is said to be “stiff” would show the following characteristics:

• A large GM and a long roll period

• A large GM and a short roll period

• A small GM and a long roll period

• A small GM and a short roll period

Moving a seine from the deck into the fish hold improves stability because it lowers the center of gravity which increases the metacentric height

• true

• false

When lifting weights or hauling fishing gear from a boom or other high point of suspension, the center of gravity of that added weight is actually acting through the point of suspension

• True

• False

The distance between two consecutive draft marks is equal to the height of a single draft mark

• True

• False

Roll period tests are useful to find the vessels approximate GM or metacentric height

• True

• False