USS Sennet (SS-408): A WWII Submarine Story

by Jhon Lennon 44 views

Hey guys! Ever heard of the USS Sennet (SS-408)? If you're into naval history, especially World War II submarines, this one's a real gem. The USS Sennet was a Balao-class submarine that served the United States Navy with distinction. Let’s dive deep – pun intended – into the history, specifications, and incredible wartime service of this submarine.

Construction and Specifications

The USS Sennet (SS-408) was constructed by the Portsmouth Naval Shipyard in Kittery, Maine. Her keel was laid down on March 1, 1944, and she was launched on May 29, 1944, sponsored by Mrs. Leverett Saltonstall. Finally, she was commissioned on August 22, 1944, with Commander George E. Loud in command. This timeline shows how quickly the U.S. Navy was churning out submarines during the war, a testament to American industrial might.

The Sennet was a Balao-class submarine, which was an improved version of the earlier Gato-class. These subs were designed for long-range patrols and had impressive specifications:

  • Displacement: Surfaced: 1,526 tons, Submerged: 2,424 tons
  • Length: 311 feet 9 inches (95.02 m)
  • Beam: 27 feet 3 inches (8.31 m)
  • Draft: 16 feet 10 inches (5.13 m)
  • Propulsion: Four Fairbanks-Morse Model 38D8-1⁄8 diesel engines with General Electric generators, driving four Elliott Electric motors, two 126-cell Sargo batteries, two propellers.
  • Power: 5,400 shp (4,000 kW) surfaced, 2,740 shp (2,040 kW) submerged
  • Speed: Surfaced: 20.25 knots (37.50 km/h; 23.30 mph), Submerged: 8.75 knots (16.21 km/h; 10.07 mph)
  • Range: 11,000 nautical miles (20,000 km; 13,000 mi) at 10 knots (19 km/h; 12 mph) surfaced
  • Test Depth: 400 ft (120 m)
  • Complement: 6 officers, 60 enlisted
  • Armament: Ten 21-inch (533 mm) torpedo tubes (six forward, four aft), one 5-inch (127 mm)/25 caliber deck gun, one 40 mm Bofors anti-aircraft gun, one 20 mm Oerlikon anti-aircraft gun.

The Balao-class was renowned for its robust construction, improved living conditions for the crew, and enhanced battery capacity, making them highly effective in the Pacific Theater. The Sennet, with its advanced technology and formidable armament, was ready to take the fight to the enemy.

World War II Service

After commissioning, the USS Sennet joined the Pacific Fleet and began its impactful service during World War II. The submarine conducted several war patrols, each fraught with danger and critical to the Allied effort to defeat Japan.

First War Patrol (November 1944 - January 1945)

Sennet's first war patrol took place in the South China Sea. During this patrol, she sank several Japanese vessels, contributing to the disruption of enemy supply lines. Patrolling these waters was risky due to the heavy presence of Japanese warships and aircraft. The crew had to remain vigilant, using their advanced sonar and radar to detect threats.

Second War Patrol (January 1945 - March 1945)

Her second patrol found her operating in the Java Sea, another vital shipping route for the Japanese. Here, Sennet continued its mission of intercepting and destroying enemy ships. The submarine faced numerous challenges, including navigating shallow waters and evading enemy patrols. The crew's skill and the boat's advanced technology were crucial in overcoming these obstacles.

Third War Patrol (March 1945 - May 1945)

The third patrol saw Sennet back in the South China Sea. This time, she focused on attacking enemy convoys and disrupting their operations. One notable engagement during this patrol involved a fierce battle with a heavily armed Japanese merchant ship. The Sennet successfully sank the vessel, but not without sustaining some damage, showcasing the intense combat conditions faced by the submarine crews.

Fourth War Patrol (May 1945 - July 1945)

Sennet's fourth war patrol was conducted in the Gulf of Siam. During this period, she continued to target Japanese shipping, contributing to the increasing pressure on Japan's war economy. The crew faced the constant threat of mines and enemy aircraft, requiring them to maintain a high state of readiness.

Throughout these patrols, the USS Sennet demonstrated its effectiveness as a submarine, sinking numerous enemy vessels and playing a significant role in the Allied victory in the Pacific. The courage and skill of her crew were instrumental in achieving these successes.

Post-War Service and Decommissioning

Following the end of World War II, the USS Sennet returned to the United States and underwent a period of overhaul and modernization. The submarine was then assigned to various training and operational duties, contributing to the Navy's readiness during the Cold War era.

In the late 1940s and early 1950s, Sennet participated in numerous exercises and training operations, helping to develop new submarine tactics and technologies. The submarine also served as a training platform for new submariners, ensuring that the Navy maintained a high level of expertise in undersea warfare.

However, as technology advanced, Sennet became increasingly outdated. In 1968, after years of distinguished service, the USS Sennet was decommissioned from the Navy. Her name was struck from the Naval Vessel Register, marking the end of her active service life. Subsequently, the submarine was sold for scrap, a fate common to many warships of her era.

Awards and Recognition

During her service, the USS Sennet earned several awards and commendations, recognizing her outstanding performance and contributions to the war effort. These included:

  • Four battle stars for World War II service
  • Navy Unit Commendation

These accolades reflected the bravery and dedication of the Sennet's crew and the significant impact the submarine had on the war in the Pacific.

The Legacy of USS Sennet

Although the USS Sennet no longer exists, her legacy lives on in the annals of naval history. She stands as a testament to the courage and skill of the submariners who served aboard her and to the vital role that submarines played in World War II. The Sennet's story is a reminder of the sacrifices made by those who fought to defend freedom and protect the interests of the United States.

The story of the USS Sennet also highlights the technological advancements in submarine warfare during the mid-20th century. The Balao-class submarines like Sennet were at the forefront of these developments, incorporating innovations that made them formidable adversaries in the undersea domain.

For naval history enthusiasts and those interested in the stories of World War II, the USS Sennet provides a compelling case study of a submarine that made a significant impact on the war in the Pacific. Her patrols, engagements, and the challenges faced by her crew offer valuable insights into the realities of submarine warfare during that era.

Conclusion

The USS Sennet (SS-408) was more than just a submarine; she was a symbol of American ingenuity, courage, and determination during World War II. From her construction in Kittery, Maine, to her valiant patrols in the Pacific, the Sennet played a crucial role in the Allied victory. Though she was eventually decommissioned and scrapped, her story continues to inspire and remind us of the sacrifices made by the brave men who served aboard her. So, next time you're reading about naval history, remember the USS Sennet – a true warrior of the deep! And that's the story of the USS Sennet, guys. Hope you found it as fascinating as I do!