Which of the following is not listed as a use for the 1¾ inch hose?

• A. Supply lines
• B. Transverse lines
• C. Attack packs
• D. Bumper lines

Answer: (A)

A 1¾ inch hose is a lightweight, agile handline used for quick, direct fire attack and close-quarters work. It’s commonly deployed as an attack line to apply water directly to the fire, as a bumper line mounted on the engine for rapid initial attack from the exterior, and as a transverse line used to drape or stretch hose across a space to reach the seat of the fire. It can also be carried as an attack pack by a firefighter for rapid deployment. Supplying water to the scene, on the other hand, relies on larger-diameter supply lines (such as 2½ inches) connected to hydrants or pumpers to bring water to the apparatus or to other lines. Those supply lines aren’t a listed use for the 1¾ inch hose, which is focused on quick attack work rather than water supply.