What are inert gas systems used for on tankers?

Inert gas systems are critical safety features on tankers designed primarily to reduce the risk of explosion in cargo tanks. These systems operate by replacing flammable gases in the cargo tanks with inert gases, typically nitrogen or a mixture of gases, which do not support combustion. By displacing the oxygen in the tank with these inert gases, any potential for fire or explosion is significantly minimized, especially during the loading and unloading processes when volatile vapors are present.

This safety measure is essential in preventing explosive atmospheres from forming within the cargo tanks, which could lead to catastrophic incidents. The use of inert gases helps maintain a safe working environment on board by ensuring that the cargo operations can be conducted without the added danger of combustion.

Options that refer to the enhancement of loading speed, providing fresh air for crew members, or operating the ship's maneuvering system do not pertain to the primary function of inert gas systems, which is centered around safety and the prevention of fire and explosion hazards in the cargo spaces.