USS Entemedor SS-340

The USS Entemedor (SS 340) was a Balao-class submarine built during World War II. Constructed at the Electric Boat Company shipyard in Groton, Connecticut, this facility was known for producing submarines. The submarine was launched on October 17, 1944, and officially entered service with the United States Navy on January 6, 1945. This construction project aimed to strengthen the U.S. Navy's submarine fleet, which played a crucial role in the Pacific Theater during the war. Named after the resilient entemedor fish, this submarine embodies qualities essential for underwater operations. Following the tradition of naming submarines after marine creatures, this choice underscores its predatory capabilities, with the entemedor fish from Pacific waters symbolizing the submarine's strategic role in naval warfare.

Key features of the USS Entemedor included a hull design that enabled dives to depths of 400 feet and formidable weaponry. The submarine was outfitted with ten 21-inch torpedo tubes—six in the bow and four in the stern—capable of firing various types of torpedoes. It also had a 5-inch deck gun and several anti-aircraft weapons, making it a formidable opponent both below and above the waterline. The design of the Balao-class submarine included sonar and radar systems, enhancing its ability to detect and track targets.

The USS Entemedor’s legacy in the U.S. Navy is defined by its contributions during and after World War II. Although it entered service during the war and saw combat action, it also participated in post-war operations and training exercises. The submarine played a role during the Cold War by helping to develop submarine tactics and technologies that would be crucial for future decades. Its service showcased the shift from wartime operations to peacetime readiness, ensuring that the Navy maintained its superiority in warfare.

As part of the Balao-class submarines, the USS Entemedor belonged to a group of vessels that formed a vital component of the U.S. Navy's submarine fleet during World War II. The Balao class represented an improvement over the Gato-class submarines, featuring a stronger pressure hull and increased operational depth capability. These submarines were designed for long-distance patrols and played a key role in the Navy's plan to disrupt Japanese supply routes and naval activities. The Balao-class submarines were renowned for their sturdiness, dependability, and efficiency, establishing them as a cornerstone of the Navy’s capabilities beneath the waves.

On January 6, 1945, the USS Entemedor was officially commissioned, marking the start of its twenty-year tenure. The ceremony was attended by officials and the ship's crew, all eager to set sail. The commissioning not only signified the submarine's readiness to join the fleet but also represented the culmination of construction and testing efforts over several months. Throughout its service, the USS Entemedor distinguished itself by embodying the strength and ingenuity of America's submarine force.

 

USS Entemedor SS-340: A Deep Dive into the Engineering Marvel and Firepower of a Cold War Submarine

The USS Entemedor (SS 340) belonged to the Balao-class submarines, known for their construction and significant role in World War II. These submarines represented an advancement over the Gato class, featuring a reinforced pressure hull that enabled deeper dives. Constructed with high-tensile steel, the USS Entemedor could reach depths of up to 400 feet, although it often operated beyond this limit. Measuring 311 feet 9 inches in length, with a beam of 27 feet 3 inches and a draft of 17 feet, the submarine had a displacement of 1,526 tons when surfaced and 2,424 tons when submerged, striking a balance between strength and agility.

In terms of technology, the USS Entemedor boasted cutting-edge systems for its era. It was powered by four General Motors Model 16-248 diesel engines for surface travel, paired with electric motors for underwater navigation. This diesel-electric propulsion system allowed the submarine to achieve speeds of up to 20.25 knots on the surface and 8.75 knots when submerged. The submarine was also equipped with sonar and radar systems, such as the SJ surface search radar and the SD air search radar, which greatly improved its ability to detect and track targets. By combining these technologies, the USS Entemedor effectively carried out its defensive missions.

The USS Entemedor's weaponry was designed to pack a punch against enemy ships. It boasted ten 21-inch torpedo tubes—six in the front and four in the back—allowing for a formidable torpedo attack. With a stock of 24 torpedoes, including Mark 18 torpedoes, it could deal significant damage to enemy vessels, establishing itself as a strong force in naval confrontations. It was also armed with a 5-inch/25-caliber deck gun for surface combat operations, proving valuable for engaging ships or shore targets. For defense against air threats, the USS Entemedor was equipped with aircraft guns like the Bofors 40mm and Oerlikon 20mm cannons. These weapons effectively protected the submarine during surface operations.

Overall, the USS Entemedor was equipped with a variety of weapon systems to defend against threats and carry out its mission as a combat-ready submarine. By incorporating advanced technologies and weaponry, the USS Entemedor became a formidable asset in the U.S. Navy's submarine fleet during its active service.

 

USS Entemedor SS-340 Crew Member Reports of Time Aboard

The USS Entemedor (SS-340) guestbook is a treasure trove of memories shared by its former crewmembers, each recounting their unique experiences aboard the submarine. These recollections span various years and roles, painting a vivid picture of life on the vessel.

Robert Coley, who served as an EM2(SS) in 1968, recalls his time aboard the USS Entemedor with a sense of progression and camaraderie. He joined the submarine straight from EM A school and later left to attend B School, eventually rising to the rank of EM2(SS). During his tenure, he participated in two Spring Board Runs and a Mediterranean (Med) Run. Coley was part of a group of sailors who transitioned from the USS Croaker (SS-246) to the Entemedor. His career continued to flourish as he went on to Officer Candidate School (OCS) in 1982, ultimately retiring as a Lieutenant.

Floyd Frazier served as a Fireman Apprentice (FA SS) in 1971 and shares a mix of fond and challenging memories. He humorously notes that being a 'Dinky' non-qual was not among his favorite experiences. Unfortunately, his time on the Entemedor was cut short due to a serious auto accident. Despite this, Frazier cherishes the memory of Operation 'Springboard' to the Caribbean, particularly the vibrant experiences at the El Chicago club in San Juan.

W.O. Smith, who served as a Sonar Technician Third Class (STS3 SS) in 1962, reflects on his brief but impactful time aboard the submarine. He was part of Harry Burns's sonar crew and played a role in converting Tom Liley from a cook to a sonarman. This anecdote highlights the versatility and adaptability required of submarine crew members.

Phil Sullivan, a Fire Control Technician Second Class (FTG 2 SS), also served in 1962 but under different circumstances. He was temporarily assigned (TAD'd) from the USS Nautilus (SSN-571) to the Entemedor due to a crew shortage. Sullivan fondly remembers the six-month Med Run, particularly enjoying the liberties and experiences in the Mediterranean.

These shared memories from the USS Entemedor's guestbook provide a rich tapestry of life aboard the submarine, illustrating the diverse experiences and lasting bonds formed among its crew members.

USS Entemedor SS-340: Evolution of a Silent Sentinel in the Deep

The USS Entemedor (SS 340), a Balao-class submarine, received upgrades throughout its service life to remain an asset to the U.S. Navy. Initially commissioned in 1945, the submarine was equipped with cutting-edge technology for that era, including sonar and radar systems. As advancements in warfare emerged, the need for modernization became clear. In the 1950s, the Entemedor underwent the GUPPY (Greater Underwater Propulsion Power Program) conversion, which involved streamlining the hull, upgrading battery systems, and enhancing the snorkel system. These changes significantly boosted its endurance and speed, improving its efficiency across various mission types.

Following these upgrades, the USS Entemedor expanded its mission capabilities. Originally designed for ship and reconnaissance operations during World War II, it was now able to undertake a wider array of tasks during the Cold War. The improved sonar and radar systems enabled effective anti-submarine warfare (ASW) operations—a crucial aspect of U.S. Navy strategy against Soviet submarine threats. The Entemedor also supported the deployment and retrieval of operational forces, making it a versatile platform for diverse missions. Its ability to remain submerged for extended periods positioned it as an ideal choice for intelligence-gathering activities in disputed waters.

The USS Entemedor made significant contributions to the fleet. Throughout its service, the submarine participated in exercises and operations that assessed and refined naval strategies and technologies. Its involvement in ASW drills was instrumental in enhancing the Navy's methods for detecting and engaging submarines, providing insights that influenced the development of future submarine models. The Entemedor also engaged in collaborative efforts with allied navies, bolstering interoperability and reinforcing maritime security. For example, its participation in NATO exercises showcased not only the U.S. Navy's commitment to defense but also highlighted the capabilities of its submarine fleet.

In addition to its operational impact, the USS Entemedor served as a training ground for submariners who would later assume command of their own vessels. The firsthand experience gained aboard the Entemedor was invaluable, offering sailors training in submarine tactics and systems. This rich history of top-notch training ensured that the knowledge and skills acquired during its tenure were shared with peers, thereby enhancing the efficiency of the U.S. Navy's submarine fleet.

The remarkable journey of the Entemedor underscores the importance of enhancements and adaptability in maintaining naval supremacy.

 

USS Entemedor SS-340: A Silent Sentinel's Legacy in Conflict and Honor

The USS Entemedor (SS 340) has a history marked by deployments and significant contributions to major conflicts. Commissioned toward the end of World War II, the submarine conducted patrols in the Pacific Theater, though it did not see action before the war ended. After the war, the Entemedor actively participated in early Cold War activities, engaging in intelligence-gathering missions and naval exercises aimed at countering the growing Soviet threat. These deployments often took it to the Atlantic and Mediterranean regions, where it helped maintain the United States' strategic presence.

During the Korean War, the USS Entemedor was sent to the Western Pacific for reconnaissance and surveillance missions. These operations were crucial for gathering intelligence on enemy movements and ensuring the safety of United Nations forces. The submarine's ability to operate covertly in these waters proved invaluable during this conflict. It also engaged in exercises with allied navies, contributing to enhanced cooperation and strengthened international maritime alliances.

The service record of the USS Entemedor is adorned with awards and commendations that reflect its performance and unwavering dedication. Among its achievements, the submarine received the Navy Unit Commendation for its performance during the Korean War. This distinguished recognition acknowledged the courage, expertise, and commitment of the crew to their mission. The Entemedor also earned Battle Efficiency "E" awards, which highlighted its exceptional operational preparedness and effectiveness in various naval drills and missions.

Beyond its accolades, the USS Entemedor played a key role in advancing submarine technology and strategies. Throughout its service, the submarine underwent upgrades, including enhancements to its sonar systems and weaponry. These improvements ensured that the Entemedor remained at the forefront of naval warfare capabilities. Its involvement in shaping submarine warfare tactics through training exercises significantly influenced the future of the U.S. Navy's submarine fleet.

The enduring legacy of the USS Entemedor (SS 340) stands as a tribute to its crew's commitment and expertise, along with its lasting impact on naval history.

 

USS Entemedor SS-340 Ship Specifications

Specification	Details
Class	Balao Class Submarine
Commissioned	April 6, 1945
Displacement	2,414 tons
Length	311.9 feet
Beam	27.3 feet
Draft	15.3 feet
Speed	20.25 knots
Complement	66