Damage Control 313 (DC 313) – Scene Leader Practice Test 2026 - Free DC 313 Practice Questions and Study Guide

The main idea here is knowing how many suction points (eductors) the dewatering system has. Eductors create vacuum to pull water out of compartments and into the drainage network, so the count tells you how many places you can pull water from at once and what capacity you can expect during a flood drill.

In the standard Main Draining system, there are seven eductors. This setup provides enough coverage across the drainage network to dewater multiple compartments efficiently and gives the crew multiple suction points to use with the pumps. The other numeric options don’t match the tested configuration, so seven is the correct count.