The H.L. Hunley, a Confederate Navy submarine, which was the first ever to sink an enemy ship, may have been raised from the ocean floor in 2000. But just recently scientists were able to open the crank shank, which propelled the sub by hand.

After 100 years of sediment build-up, a tooth was found as well as textiles and a metal wrap around the hand shank to keep the crew from chafing their hands.

RELATED: Lessons still to be learned from Spanish Civil War

16 PHOTOS Lessons still to be learned from Spanish Civil War See Gallery Lessons still to be learned from Spanish Civil War Ruins of a building are seen in the old village of Belchite, in northern Spain, November 13, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. The entrance to the ruins of the old village of Belchite is seen in northern Spain, October 3, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Visitors walk past ruins in the old village of Belchite, in northern Spain, November 14, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Tomas Ortin, 94, survivor of the Belchite battle, poses for a picture at the ruins of his former home in the old village of Belchite, in northern Spain, November 14, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. The sun sets over ruins in the old village of Belchite, in northern Spain, November 13, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Visitors walk past the Cross for the Fallen in the old village of Belchite, in northern Spain, November 13, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Windmills are seen behind the ruins of the old village of Belchite, in northern Spain, November 13, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. The moon rises behind the San Martin de Tours church in the old village of Belchite, in northern Spain, November 14, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Sky is seen through the holes of the San Agustin church ceiling in the old village of Belchite, in northern Spain, October 3, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Bullet holes and the remains of a street sign are seen on a building in the old village of Belchite, in northern Spain, November 13, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. A graffiti is seen on the entrance door of San Martin de Tours church in the old village of Belchite, in northern Spain, October 3, 2016. The graffiti reads: "Old town of Belchite, young men don't wander around you anymore. The jots (typical songs and dance of the area) that our fathers used to sing, won't be heard anymore". REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. A visitor looks at a monument where Spanish Civil war victims are buried, in the old village of Belchite, in northern Spain, October 3, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Remains of a building are seen in the old village of Belchite, in northern Spain, November 13, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. The tower of the San Agustin church is seen in the old village of Belchite, in northern Spain, November 13, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. A man dressed up as a Republican soldier looks at his mobile phone as he waits for tourists in front of the entrance to the old village of Belchite, in northern Spain, November 14, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. A man looks out of a building during a guided night visit in the old village of Belchite, in northern Spain, November 13, 2016. REUTERS/Andrea Comas SEARCH "SPANISH RUINS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

While the discovery teaches about how the crew worked, the unsolved mystery of the ship's third and final sinking is still unknown.

During the Civil War, the ship sank twice during test runs, killing 13 confederates.

The sub, then known as the Fish boat, was raised from the ocean and put back to work.

The 40 ft. Hunley attacked and sank the 205ft. USS Housatonic on its third voyage, but then sank itself and was lost at sea.

All eight crew members perished in the disappearance.

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