Never-before-seen photos reveal WWI-era submarine 1,300 feet below surface where 19 sailors perished in 1917

Never-before-seen photos reveal WWI-era submarine 1,300 feet below surface where 19 sailors perished in 1917

Researchers ahead of Memorial Day documented USS F-1 submarine that sank 108 years ago, now rests off San Diego's coast

In Dec. 1917, 19 sailors serving on a World War I-era U.S. submarine made the ultimate sacrifice during a training mission. Shown above, a photogrammetric reconstruction of the submarine USS F-1 on the seafloor west of San Diego. (Zoe Daheron; Woods Hole Oceanographic Institution)

A hole in the hull of USS F-1 was caused by a collision with its sister ship, USS F-3. (Bruce Strickrott; Woods Hole Oceanographic Institution)

Photogrammetric reconstruction of the submarine USS F-1 shows the conning tower and collision damage that caused the sub to sink. (Zoe Daheron; Woods Hole Oceanographic Institution)

While studying the submarine, the scientists also surveyed a Navy torpedo bomber training aircraft that went down in the same place in 1950. (Anna Michel; Woods Hole Oceanographic Institution)

External ship’s wheel located on the sail of USS F-1 (Bruce Strickrott, Woods Hole Oceanographic Institution)