The morning of December 17, 1927, began as just another day in the regular, rigorous training routine of the U.S. Navy’s submarine fleet. For the crew of the USS S-4 (SS-109), it was supposed to be a day of standard operations, where the submarine was testing her systems off the coast of Provincetown, Massachusetts. The USS S-4, a part of the United States Navy’s fleet of S-class submarines, had been commissioned in 1922 and was engaged in routine training exercises, designed to ensure her readiness for wartime operations. Continue reading “Into the Abyss: The USS S-4 Tragedy” →