What is cold iron?

What is cold iron?

• A. NO FUEL FLOWING - Not operating generators, propulsion boilers or main engines
• B. A type of steel used in pier mooring
• C. An emergency power switch
• D. A grounding technique

Answer: (A)

Cold iron refers to supplying a vessel with electrical power from the shore while it is in port, so the ship’s own engines and generators are not running. That means no fuel is flowing to the onboard propulsion boilers, main engines, or auxiliary generators. This practice, often called shore power or cold ironing, reduces emissions, noise, and fuel use while the ship is anchored or docked. The other options don’t fit because cold iron isn’t about a steel type used for mooring, it isn’t an emergency power switch, and it isn’t a grounding technique.

Cold iron refers to supplying a vessel with electrical power from the shore while it is in port, so the ship’s own engines and generators are not running. That means no fuel is flowing to the onboard propulsion boilers, main engines, or auxiliary generators. This practice, often called shore power or cold ironing, reduces emissions, noise, and fuel use while the ship is anchored or docked.

The other options don’t fit because cold iron isn’t about a steel type used for mooring, it isn’t an emergency power switch, and it isn’t a grounding technique.