USS San Marcos LSD-25

USS San Marcos LSD-25

The USS San Marcos (LSD-25) was a Casa Grande-class dock landing ship built for the U.S. Navy in the mid-20th century. It was laid down on 1 September 1944 at the Philadelphia Naval Shipyard, a key player in building the Navy's fleet. The ship launched on 10 January 1945 and was commissioned on 15 April 1945. This ship was part of a larger push to boost the Navy's amphibious strength during World War II, highlighting the importance of such ships in supporting ground operations.

Named after the Castillo de San Marcos in St. Augustine, Florida, the ship's name reflects the Navy's tradition of honoring historical sites and events. This practice keeps history alive and fosters pride among the sailors who serve on these vessels.

The USS San Marcos had a well deck, allowing it to carry, launch, and recover landing craft and amphibious vehicles. Its large, open interior could be flooded to accommodate these craft, making it a versatile tool for amphibious missions. Armed with anti-aircraft guns, it was ready to defend against aerial threats, showcasing the multi-faceted nature of naval warfare at the time. The ship's design focused on functionality and adaptability, supporting a wide range of missions.

The legacy of the USS San Marcos is marked by its role in numerous amphibious operations and post-World War II engagements. It participated in various exercises, proving the effectiveness of dock landing ships in modern naval strategy. Its service underscored the importance of amphibious capabilities in projecting power and supporting ground forces, a concept still relevant today. The San Marcos and its sister ships set the stage for future amphibious vessels, influencing the design and deployment of later dock landing ships.

As part of the Casa Grande class, the USS San Marcos was designed to boost the Navy's amphibious warfare capabilities. These ships transported and launched landing craft and amphibious vehicles, crucial for beach landings and other operations. The class was known for its large well deck, sturdy build, and versatility, making it a valuable Navy asset. These ships enabled the rapid deployment of troops and equipment in hostile environments, a vital capability during World War II and beyond.

The commissioning of the USS San Marcos on 15 April 1945 marked the start of its active service. The ceremony was a big deal, symbolizing its readiness to join the fleet. As a new ship, the San Marcos went through trials and training to ensure it was ready for action. These steps were key to integrating the ship into the Navy's amphibious forces and preparing it for wartime challenges. The commissioning of the San Marcos was a crucial move in expanding the Navy's amphibious capabilities and boosting its combat effectiveness.

 

USS SAN MARCOS LSD-25 Framed Navy Ship Display
USS SAN MARCOS LSD-25 FRAMED NAVY SHIP DISPLAY

USS San Marcos LSD-25: Structure, Technology, Armament, and Weaponry

The USS San Marcos (LSD-25) was a Casa Grande-class dock landing ship, celebrated for its robust and versatile design. It stretched 457 feet long and had a beam of 72 feet, offering plenty of room for its main mission: transporting and launching landing craft and amphibious vehicles. Its hull featured a well deck that could be flooded, making it easy to deploy these craft. This was crucial for amphibious operations, allowing for the quick and efficient offloading of troops, vehicles, and equipment directly onto hostile shores. The ship's superstructure housed command and control facilities, along with accommodations for the crew and embarked troops.

Technologically, the USS San Marcos was ahead of its time with its navigation and communication systems. It boasted radar systems for surface and air search, vital for navigation and spotting threats. These systems enabled the ship to operate effectively in all weather conditions and during night operations. The ship also had advanced radio and signal equipment to keep in constant touch with other naval units, aircraft, and ground forces. This tech suite made the USS San Marcos a key command and control hub during amphibious assaults.

When it came to armament, the USS San Marcos was well-equipped to defend against air and surface threats. Its main armament included twin 5-inch/38 caliber dual-purpose guns, capable of engaging both aircraft and surface targets. These were backed by smaller anti-aircraft weapons, like 40mm Bofors and 20mm Oerlikon cannons. This mix of weaponry provided a layered defense system, allowing the ship to protect itself and its embarked forces from enemy attacks. The strategic placement of these weapons around the ship ensured comprehensive coverage and quick response times during combat.

The USS San Marcos also carried a range of amphibious assault equipment, central to its mission. The well deck could hold several landing craft, including LCMs (Landing Craft Mechanized) and LCUs (Landing Craft Utility), essential for getting troops and vehicles to shore. The ship was equipped with cranes and davits to handle these craft, as well as other cargo and equipment. With its structural design, advanced technology, and formidable armament, the USS San Marcos was a critical asset in the U.S. Navy's amphibious warfare capabilities, ready to execute complex operations in diverse and challenging environments.

 

USS San Marcos LSD-25 Navy Ship Plaque
USS San Marcos LSD-25 Personalized Plaque

Crew Accounts of Time Aboard

The USS San Marcos (LSD-25) holds a treasure trove of memories for its former crew members, as evidenced by the heartfelt posts in its guestbook. These recollections span from the early 1950s to the ship's decommissioning in the early 1970s, painting a vivid picture of life aboard this storied vessel.

Chris Ashcraft, who served as a Machinist's Mate Second Class (MM2) in 1964, recalls his time standing watches in both pump rooms and engine rooms. His career on the San Marcos saw him oscillate between ranks, reflecting the dynamic nature of naval service. Ashcraft's tenure was marked by a sense of camaraderie and a desire to reconnect with old shipmates.

Orv Bursler, a Radioman Second Class (RM2) in 1958, is on the lookout for fellow members of the RM gang from 1958 to 1961. His journey on the San Marcos culminated in his departure for RM 'B' school in Bainbridge, Maryland, in 1961, highlighting the ship as a stepping stone in his naval career.

Robert Florence, who served as a Radioman Seaman (RMSN) and later Radioman Third Class (RM3) in 1970, reminisces about the ship's cruises to Nassau and its eventual decommissioning in 1971. His memories are tied to the ship's home port at the US Navy Amphibious Base in Little Creek, Virginia, and its transfer to the Spanish Navy.

Ralph Halvorsen, a Quartermaster Third Class (QM3) in 1964, shares a unique trajectory. After passing his second-class exam and leaving active duty, he re-enlisted in the reserves, eventually rising to the rank of Chief Warrant Officer 3 (CWO3) and Limited Duty Officer (LDO) Lieutenant. His career spanned 26 years, with notable achievements such as attending Dive School at the age of 40.

Jack Lieberman, a Lieutenant Junior Grade (LTJG) in 1965, served as the Gunnery Officer right out of college. His multifaceted role included sixteen collateral duties, ranging from Cruise Book Officer to responsibilities involving Nuclear Weapons, showcasing the diverse skill set required of naval officers.

Peter A. Marotta, a Machinery Repairman Third Class (MR3) in 1966, fondly remembers serving with a great group of guys from both A and M Divisions. His recollections are filled with names like Mike Waters, Otten, Ashcraft, Myers, and Bacon, underscoring the strong bonds formed aboard the ship.

Daniel Martinez, a Second Class Petty Officer - Postal Clerk in 1966, started his journey by taking care of the Captain's gig before passing the Postal Clerk 3rd examination. He eventually became the Fleet Mail Coordinator, making two Mediterranean and two Caribbean cruises during his service.

Richard McDonald, a Boatswain's Mate Third Class (BM3) in 1969, sends a heartfelt message to his shipmates, expressing his love and longing for those he served with, including Charlie, Don, Dave, and Alan.

Raymond Otten, a Machinist's Mate Third Class (MM3) in 1966, recalls his responsibilities in the starboard pump room and main control. His service included three Mediterranean cruises and several Caribbean cruises, highlighting the ship's extensive operational history.

Calvin Pletzer, a Signalman Third Class (SM3) in 1959, shares memories of his time as a signalman and mentions his brother Larry Pletzer, who served as a Personnelman on the same ship. Calvin's tenure included three or four Mediterranean cruises, and he expresses a desire to reconnect with old shipmates.

Novis Powers, a Radioman Second Class (RM2) in 1952, lists several names of fellow crew members, including Scapanda, Schultz, Surgeon, Moreau, Morefield, Hollyfield, Baker, Becker, Russ (Signalman), and Paul (brickbat), reflecting the close-knit community aboard the San Marcos.

Michael Protiva, an Electronics Technician Second Class (ETN2) in 1968, was among the last crew members to leave the San Marcos. He assisted in the transfer of the ship to the Spanish Navy, spending two weeks with the new Spanish crew, marking a significant transition in the ship's history.

Mike Rushin, a Third Class Boatswain's Mate in 1968, transitioned from a gunnersmate to a boatswain mate. He was in charge of exterior levels and a fleet of six boats, and he directed quad and dual 40s during gunnery shoots. He also managed the Captain's gig during the ship's decommissioning in June.

Jim Smith, a Hospital Corpsman Chief (HMC) in 1963, achieved the rank of HMC onboard in December 1965. His career continued with assignments on the ALSTEDE, MCB133, 7th Marine Regiment (LZ Baldy), Oklahoma City, and USNRMC Japan.

Harold Southard, a Yeoman Third Class (YN3) in 1967, expresses gratitude to YN2 Joe Bauer from Michigan, who recommended him for a job in the ship's office, a gesture for which he remains indebted.

Randy Strange, who served in 1969, was the lead Interior Communications (IC) man. He worked closely with Ron Luce, Larry Radabaugh, and Jim Robinson, the latter of whom passed away a few years ago.

Bob Varden, a Personnelman Third Class (PN3) in 1961, recalls his time working in personnel and achieving the rank of PN3. He mentions the "kiddie cruise," a three-year enlistment for those under 18, and seeks to reconnect with anyone from that era.

These memories collectively capture the essence of life aboard the USS San Marcos (LSD-25), highlighting the diverse experiences and enduring bonds formed by its crew members over the years.

 

USS San Marcos LSD-25 Coffee Mug
USS San Marcos LSD-25 Coffee Mug

USS San Marcos LSD-25: Upgrades, Mission Capabilities, and Contribution to the Fleet

The USS San Marcos (LSD-25) was a remarkable ship that saw many changes during its time with the U.S. Navy. Commissioned in 1945, it was built as a dock landing ship, perfect for transporting and launching amphibious craft and vehicles. Over the years, the San Marcos got some serious upgrades. It received better radar and communication systems, which made it even more effective in its missions. The propulsion systems were also improved, boosting its speed and fuel efficiency. These changes kept the San Marcos relevant and ready for action well into the late 20th century.

The San Marcos was a versatile ship with a wide range of mission capabilities. It was primarily designed for amphibious warfare, carrying various landing craft like LCMs and LCUs. These were crucial for getting troops, vehicles, and equipment from ship to shore. Its well deck was a game-changer, allowing for quick deployment of these craft. But the San Marcos wasn't just about combat. It was also equipped to handle humanitarian missions, disaster relief, and non-combatant evacuations, proving its worth beyond traditional military roles.

The USS San Marcos made a big impact on the U.S. Navy's operations. It was involved in key missions and exercises, including the Korean War's famous Inchon landing, which was a turning point in the conflict. After that, the San Marcos continued to shine, participating in NATO exercises and working with allied navies. Its ability to support logistics, transport heavy gear, and move troops quickly made it a vital part of both peacetime and wartime efforts.

Throughout its service, the USS San Marcos was a testament to the adaptability and strength of the U.S. Navy's amphibious forces. With continuous upgrades and a wide range of missions, it met the ever-changing challenges of naval warfare and humanitarian needs. The ship's legacy is one of operational excellence and strategic importance, highlighting the crucial role of dock landing ships in modern naval operations. The San Marcos not only did what it was built to do but also took on new missions, proving its lasting value to the U.S. Navy and its allies.

 

Framed Navy Discharge Certificate
Framed Navy Honorable Discharge Certificate

USS San Marcos LSD-25: Deployments, Role in Major Conflicts, Awards, and Commendations

USS San Marcos (LSD-25) was a key player in many deployments and conflicts, showcasing the ever-changing and challenging nature of mid-20th-century naval operations. Commissioned in 1945, as World War II was winding down, the ship initially had limited action in the Pacific. But soon, it shifted to a peacetime role, taking part in training exercises and amphibious operations that were vital for keeping the U.S. Navy ready during the early Cold War. As a dock landing ship, it was crucial for moving troops, vehicles, and equipment, helping the U.S. project power and tackle emerging threats worldwide.

During the Korean War, USS San Marcos was actively involved in key operations, including the famous Inchon Landing in September 1950. This amphibious assault, led by General Douglas MacArthur, was a game-changer, allowing UN forces to recapture Seoul and push back North Korean troops. The ship's ability to deploy landing craft and support these assaults was vital to the operation's success. Throughout the war, San Marcos provided critical logistical support, moving troops and supplies along the Korean Peninsula, significantly contributing to the war effort.

After the Korean War, USS San Marcos continued to serve with distinction, taking part in numerous NATO exercises and Cold War missions. It frequently deployed to the Mediterranean, working with allied navies to ensure regional security and stability. During the Cuban Missile Crisis in 1962, San Marcos was part of the naval blockade that played a crucial role in getting the Soviet Union to remove its missiles from Cuba, helping to avoid a nuclear conflict. The ship's versatility and readiness were again evident during the Vietnam War, where it supported amphibious operations and provided essential logistical support to U.S. and allied forces.

Throughout its service, USS San Marcos earned several awards and commendations, highlighting its outstanding performance and the dedication of its crew. These included the Navy Unit Commendation and multiple campaign medals for its service in Korea and Vietnam. The ship's exemplary record was a testament to its robust design and the professionalism of its sailors. Decommissioned in 1971, USS San Marcos left a legacy of resilience and adaptability, having played a crucial role in significant military engagements of the mid-20th century. Its storied history remains a source of pride and inspiration for the U.S. Navy and its veterans.

 

Framed and Engraved Military Aircraft Displays
Framed and Engraved Military Aircraft Displays

USS San Marcos LSD-25 Ship Specifications

Specification Details
Class Casa Grande Class
Dock Landing Ship
Commissioned April 15, 1945
Displacement 7,930 tons
Length 457.7 feet
Beam 72 feet
Draft 16.1 feet
Speed 17 knots
Complement 254 Crew
240 Troops
Back to blog

Leave a comment

Please note, comments need to be approved before they are published.