Met-o Finals Rev

What is ice accretion?

• The formation of icebergs at sea level

• The unintentional build-up of ice on parts of a ship above the waterline

• The process of a ship breaking through ice

• A type of sea spray in polar regions

Which of the following is a main condition leading to ice accretion?

• High air temperature

• Low humidity

• Low air temperature

• Calm seas

At what temperature does the risk of ice accretion significantly increase?

• Above 0°C

• Around 0°C

• Below 0°C

• Above 10°C

How does sea spray contribute to ice accretion?

• It warms the ship's structure.

• It cools the air around the ship.

• It freezes on contact with the cold ship structure

• It reduces the wind chill factor.

What effect does wind have on ice accretion?

• Reduces the cooling effect

• Has no effect on ice accretion

• Exacerbates the cooling effect through wind chill

• Warms the ship's surfaces

Why is freezing rain particularly hazardous?

• It melts ice quickly.

• It forms a light, uneven layer of ice.

• It forms an even, smooth, heavy layer of ice

• It is easily removed by wind.

What is a key operational consideration for officers regarding ice accretion?

• Ignoring weather bulletins

• Monitoring weather bulletins

• Avoiding route planning

• Increasing ship speed in cold temperatures

How does ice accumulation affect a ship's stability?

• Lowers the center of gravity

• Raises the center of gravity

• Increases metacentric height (GM)

• Has no effect on stability

What does a reduction in GM indicate?

• Increased stability

• More tender (less stable) ship

• Higher freeboard

• Improved maneuverability

What is a risk to crew safety from ice accretion?

• Reduced risk of slips and falls

• Decreased risk of hypothermia

• Increased risk of slips, falls, and injuries

• No risk to crew safety