The Marine Corps Instructor of Water Survival Course is among the most physically demanding courses in the Corps. The attrition rate can range from 20 to 50 percent, but students who endure earn the title of MCIWS.
Fewer than 600 Marines in the Corps hold the title of Marine Corps Instructor of Water Survival. The three-week MCIWS course creates instructors who can train Marines to react and survive life-threatening situations in the water
Disclaimer: The appearance of hyperlinks does not constitute endorsement by the Department of Defense of this website or the information, products or services contained therein. For other than authorized activities such as military exchanges and Morale, Welfare and Recreation sites, the Department of Defense does not exercise any editorial control over the information you may find at these locations. Such links are provided consistent with the stated purpose of this DoD website.