Gymnote design by Gustav Zede   In 1888 Gustave Zede assembled Gymnote for the French Navy. A 60-foot, 30 tons battery-powered boat, capable of 8 knots on the surface. The submarine was limited by the lack of any method for recharging the batteries while at sea. Her naval service was largely limited to experimentation.   Not long after the French had built the 148 foot, 266 tons Gustav Zede-named after the recently deceased designer. Back to History Index Image Country Year Description Cambodia 1994 Submarine Gymnote France 1888