The S.4. submarine, which was sunk and salvaged, is sunk again to test out "artificial lung" which would enable trapped sailors to escape. Block Island.
Item title reads - "Out of evil - cometh good!" Ill-fated S.4. sunk and salvaged, is sunk again for important tests of "artificial lung" to enable imprisoned sailors to escape. Block Island. Rhode Island.
L/S of the S.4. M/S of officers onboard it. M/S of it half submerged with a boat next to it. M/S as it disappears completely under the water. M/S of a man in a diving suit being lowered into the sea on a platform. M/S of the submarine again and other boats with it. M/S of the S.4. behind a boat.