Which airlock type is correctly described as used to exit the ship?

Which airlock type is correctly described as used to exit the ship?

• A. Type 2 airlock
• B. Type 1 airlock
• C. Type 3 airlock
• D. Type 1 airlock is used to transmit between two protected areas

Answer: (B)

Airlocks are built to match the task: some keep the ship’s atmosphere inside while moving between compartments, others are designed to let crew go outside. The one designed for exiting the ship is an exterior airlock, built with an outer hatch and proper pressure control so you can step from inside to the outer environment safely. That’s why Type 1 airlock is the correct choice for exiting. The description that a Type 1 airlock is used to transmit between two protected areas describes an internal-transfer role, which isn’t exiting the ship. The other airlock types serve those internal or alternate functions, not exterior egress.

Airlocks are built to match the task: some keep the ship’s atmosphere inside while moving between compartments, others are designed to let crew go outside. The one designed for exiting the ship is an exterior airlock, built with an outer hatch and proper pressure control so you can step from inside to the outer environment safely. That’s why Type 1 airlock is the correct choice for exiting. The description that a Type 1 airlock is used to transmit between two protected areas describes an internal-transfer role, which isn’t exiting the ship. The other airlock types serve those internal or alternate functions, not exterior egress.