Holland type submarine of the Plunger class tied up at the Electric Boat Company at New Suffolk, Long Island , New York circa 1902. Civilian technicians standing on deck of the boat.. They load a torpedo aboard, using a block and tackle.. It goes down into the hull of the submarine. The Holland type submarine running at periscope, fires the torpedo. The torpedo runs just below the surface, leaving a visible wake. The submarine rises and runs along a conning tower depth. It dives again and rises again.
Holland type submarine of the Plunger class undergoing trials at the Electric Boat Company, New Suffolk, Long Island, New York. Submarine running along at periscope depth. Periscope of the submarine. Several times the boat disappears below surface and rises again (porpoising). It makes way on the surface. Civilian testing crewmen in business attire climb out of conning tower and walk on the deck. They start back down into the conning tower. Men on the deck as the submarine runs along the surface. Submarine tied up at the pier, men walking around on deck and using a plank to walk to the pier..