U.S. Naval Academy freshmen perform sea trials (18 images)

The U.S. Naval Academy's freshman class took part in the academy's annual sea trials training exercise on May 16, 2017 in Annapolis, Md.

Modeled after the Marine Corps’ Crucible and the Navy’s Battle Stations, the freshmen -- or plebes -- undergo 14 hours of physical and mental training to mark the end of their first year in the academy.

The training program includes many aquatic challenges. Photo by Kevin Dietsch/UPI

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Obstacle courses and ground tactics are part of the capstone training for the freshmen. Photo by Kevin Dietsch/UPI

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Teamwork: Plebes carry a log during one exercise. Photo by Kevin Dietsch/UPI

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Among the water challenges: Sit-ups while linked together. Photo by Kevin Dietsch/UPI

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