Researchers Investigate The Missing WWII Submarine And The 80 Crew Members Who Were On Board

The Successful Ship

The Grayback was a Tambor-class vessel, one of 12, which was built. Seven of the Tambor submarines never returned and the Grayback was one of them. At the final result, the Grayback was over 300 feet in total.

The Successful Ship

Final Count

She was nearly 27 feet wide with a maximum surface speed of 20 knots and an underground speed of 9 knots. She averaged nearly 12,500 miles and was able to stay submerged for roughly 48 hours.

Final Count